Dondersiidae, Simroth, 1893

Dondersiidae View in CoL sp. C

( Figure 8 View FIGURE 8 , Table 2 View TABLE 2 )

Examined material. DZMB-HH-4795-08 (DZMB-Senckenberg Biozentrum Grindel und Zoologische Museum). Serial sections (eight slides) and sclerites (one stub, five slides). Guinea Basin. DIVA 2 e Me 63/2, area 4, station 90 ( 00º 40.49’N, 05º 29.71’W), 5144 m depth GoogleMaps .

Description. Elongate body ( 3.1 mm long, 0.2 mm wide in the middle and anterior region). Specimen is significantly narrowed towards the posterior end ( 0.08 mm), probably due to poor fixation or death of the specimen well before fixation. It is white, slightly yellowish in 70 % ethanol ( Figure 8 C View FIGURE 8 ). With four types of sclerites, including two different leaf-shaped scales: 1) Lanceolate, leaf-shape scales ( Figure 8 View FIGURE 8 C-1, 2): they are the most abundant sclerites. They are long and narrow (50 to 89.5 μm long, 13.5 to 27.2 μm wide), with a truncated proximal end and a distal end that can be pointed. 2) Rounded, leaf-shaped scales ( Figure 8 View FIGURE 8 C-3; 51 to 60 μm long, 20 to 25.5 μm wide). 3) Laminar scales ( Figure 8 View FIGURE 8 C-4, 5) that are concentrated in the ventral and posterior region. Very narrow, almost acicular, with pointed ends (70.5 to 80.8 μm long, 6.7 to 10.5 μm wide). 4) Oar-shaped scales ( Figure 8 View FIGURE 8 C-6) that are narrow and slightly pointed (55.6 to 80.3 μm long, 8.2 to 10 μm wide in the middle region, the narrow base is between 1.7 and 2 μm wide).