(28. Spinocalanns similis var. 

 profundalis Brodsky, 1955) 



Female, see Spinocalanus brevicaudatus Brodsky, 

 1950. Male, see 6'. similis Brodsky, 1950. 



(29. Spinocalanus longipes Tanaka, 1956) 

 (S. longipes Tanaka, 1953, nomen nudum) 



See Spinocalanus angusticeps Sars, 1920. 



(30. Spinocalanus? sp. Johnson, 1963a) 



See Spinocalanus antarcticus Wolfenden, 1906. 



31. Spinocalanus abruptus Grice and 

 Hulsemann, 1965 



Spinocalanus abruptus Grice and Hulsemann, 1965, 

 p. 227-229, fig. 6m-p. 



Type SPECIMEN: Holotype, female, BM 1965.4.20.34. 

 Type Locality: Northeast Atlantic, 1,000-2,800 m. 

 Material Studied: Para types, 2 females (1.30-1.32 

 mm), sample 49 (Table 3). 



Description 



PI Ri with 2 inner setae. P2 Ri2 with 1 outer seta 



en. 



Female. — Length 1.29-1.47 mm. Specimens ex- 

 amined in present study damaged. Prosome in dorsal 

 view ovoid. Th4 and Th5 separate. Th5 lateral corners 

 prolonged, variable, more prolonged than shown by 

 Grice and Hulsemann (1965). Thl-Th4 without 

 lateral spinules. Prosome length 4-4' .- times urosome. 

 Caudal rami symmetrical. 



Mx2 with small spinule- and setule-covered hump 

 on proximal outer edge; no outer seta seen; posterior 

 surface of lobe-5 base without spines. 



Mxp Bl-2 without transverse spine-comb. Bl with 

 few transverse rows of short setules (Grice and 

 Hulsemann, 1965, fig. 6n). 



PI as shown by Grice and Hulsemann except outer 

 setules on Bl surface, and B2 outer edge with short 

 seta, anterior surface with outer distal row of spinules, 

 inner surface with setules. 



P2-P4 rami missing on specimens examined. P2 

 perhaps with 1 outer seta on Ri2, although not clear 

 on illustration by Grice and Hulsemann (1965, fig. 

 6p); Bl with inner seta, not shown by Grice and 

 Hulsemann. 



Male. — Unknown. 



Remarks 



Spinocalanus abruptus is the only Spinocalanus 

 species in the group with 2 inner setae on PI Ri and 1 

 outer seta on P2 Ri2 that also has prolonged Th5 or is 

 without transverse spine-comb on Mxp B2. 



Distribution 



Indian Ocean 



West: Grice and Hulsemann (1967), 1,000- 

 3,000 m. 

 Atlantic Ocean 



Northeast: Grice and Hulsemann (1965), 1,000- 

 2,800 m. 



(32. Spinocalanus ovalis Grice and 

 Hulsemann, 1965) 



See Mimocalanus ovalis (Grice and Hulsemann, 

 1965). 



(33. Spinocalanus ventriosus Grice 

 and Hulsemann, 1967) 



See Mimocalanus oualis (Grice and Hulsemann, 

 1965). 



(34. Spinocalanus sp. Grice and 

 Hulsemann, 1967) 



Spinocalanus sp. Grice and Hulsemann, 1967, p. 22, 

 fig. 35. 



Remarks 



Grice and Hulsemann (1967) briefly described a 

 single male from the Indian Ocean as Spinocalanus 

 species. This specimen was examined in the present 

 study (sample 52, Table 3). PI Re3 with a total of 4 

 setae, and therefore the specimen is not a 

 Spinocalanus species. P2-P4 rami missing; P2 B2 dis- 

 tal edge spiniform, somewhat similar to 

 Clausocalanus species. Al segments beyond 10 are 

 much longer than in Spinocalanus species. 



(35. Spinocalanus parabyssalis Park, 1 970) 



Female, see Spinocalanus longicornis Sars, 1900. 

 Male, see S. abyssalis Giesbrecht, 1888. 



(36. Spinocalanus pteronus Park, 1970) 



See Spinocalanus usitatus Park, 1970. 



57 



