Campylaspis, G. O. Sars, 1865

Key to the deep-sea species (> 200 m) of Campylaspis View in CoL from Brazil

1. Carapace smooth......................................................................................2

- Carapace with tubercles, spines or ridges, or at least a shallow groove (sulcus*) on either side.........................3

2. Dactylus of pereopod 2 broad and little tapered.......................................... .. C. nitens Bonnier, 1896 View in CoL

- Dactylus of pereopod 2 narrow and tapering................................................. C. nuda Jones, 1974 View in CoL

3. Carapace covered with spines; without tubercles, lateral ridges or lateral grooves (sulci)..............................4

- Carapace without spines, but with tubercles, lateral ridges, or lateral grooves (sulci).................................5

4. Carapace with many small spines. Pseudorostrum long and prominent.......................... C. aculeata Jones, 1974 View in CoL

- Carapace with 16 stout spines (arranged in two longitudinal rows) and many small spines. Pseudorostrum short and strongly upturned......................................................................... C. spinosa Calman, 1906 View in CoL

5. Sides of the carapace without ridges, with shallow groove (sulcus)...............................................6

- Sides of carapace with two oblique ridges, with or without groove (sulcus)........................................ 8

6. Carapace without tubercles (only a blunt prominence on either side of the frontal lobe), long setae scattered over carapace dorsal surface........................................................................ C. pilosa Jones, 1974 View in CoL

- Carapace with numerous tubercles or prominences (verrucose aspect)........................................... 7

7. Peduncle of uropod about 1.25 times as long as the endopod................................ .. C. submersa Jones, 1974 View in CoL

- Peduncle of uropod more than 1.5 times as long as the endopod............................. .. C. glebulosa Jones, 1974 View in CoL

8. Oblique ridges low, restricted to the sides of carapace and delimiting lateral groove (sulcus)...........................9

- Oblique ridges, at least one of them well developed, extending onto the dorsum of the carapace. Sulcus absent.......... 10

9. Eyelobe rudimentary, minute........................................................... C. redacta Jones, 1974 View in CoL

- Eyelobe fairly well developed.......................................................... C. cognata Jones, 1974 View in CoL

10. Lower oblique ridge does not reach the dorsum of carapace............................. .. C. capsa sp. nov. ( Figs. 5–7 View FIGURE 5 View FIGURE 6 View FIGURE 7 )

- Both oblique (upper and lower) ridges reach the dorsum of carapace.............................................11

11. Upper oblique ridge bifurcated, each branch joins with its fellow from the other side............... C. plicata Jones, 1974 View in CoL

- Upper oblique ridge simple (not bifurcated)............................................................... 12

12. Both oblique ridges tuberculated. Upper oblique ridge recurved on the dorsal surface of carapace to form a nearly closed loop. With a vertical ridge at frontal lobe level joining upper and lower oblique ridges......... .. C. bicurvata sp. nov. ( Figs. 1–4 View FIGURE 1 View FIGURE 2 View FIGURE 3 View FIGURE 4 )

- Both oblique ridges smooth. Upper oblique ridge does not form a closed loop. Upper and inferior oblique ridges not joined by a vertical ridge...................................................................................... 13

13 Pseudorostrum upturned. Uropods about as long as the last three pleonites together............... C. exarata Jones, 1974 View in CoL

- Pseudorostrum not upturned. Uropods about as long as the last four pleonites together........... C. bicarinata Jones, 1974 View in CoL