Cumacea: 24. Nannastacidae, 3. Nannastacus 178 



twice as long as the exopod, with a shorter apical spine. Integument beset 

 with tubercles and granules. L. 6 1-5 mm. 9 unknown. 



Paternoster Islands, and between these and Postillion Islands; surface. 



11. N. georgi Stebb. 1900 N. t/., T. Stabbing in: Willey, Zool. Results, 

 pars 5 p. 606, 61b t. 64B | 1905 X. g.. Caiman in: Siboga-Bxp., nr. 36 p. 12. 



Near to X. suhm'd cS (nr. 2) and A', z'unmerl 6 (nr. 1). Pseudorostral 

 lobes subhorizontal, apically rounded, not carinate, autero-lateral margin sinuous, 

 lower corner acute. Carapace with branchial regions inflated flanking a depression 

 between long and short convexities of the median line. P^ pedigerous seg- 

 ment almost entirely concealed; fifth pedigerous and P* pleon segment with 

 a marked longitudinal medio-dorsal depression. Pleon segments with pellucid 

 lateral carinae, 5*'^ segment considerably the longest, telsonic segment distally 

 triangular. Eyes well separated, large, dark, each with 3 corneal lenses. Antenna 

 2. flagellum of 18 joints or more, distally extremely slender. Maxilliped 1, 

 branchial leaflets about 16. Peraeopod 5, 5*^ joint not greatly longer than (>*''. 

 Peduncle of uropods more than twice as long as the very short exopod, but 

 scarcely a third as long as the endopod; apical spine of exopod considerably 

 longer than that of endopod. L. 6 2-5 mm. g imknown. 



Blanche Bay, New Britain; surface. 



12. N. pardus Calm. 1905 N.p., Caiman in: Siboga-Exp., nr. 36 p. 2, 13 tf. 2a — c. 



Pseudorostral lobes very short, upturned, apically rounded, not meeting 

 above, antero-lateral margin forming two convexities, lower corner rounded 

 with a single curved tooth on its surface. Carapace smooth, median 

 line forming long and short low convexities, separated by slight depression 

 between the branchial regions. The 5 pedigerous segments unarmed, dorsally 

 rounded, with expanded side-plates. Pleon stout, setulose, first 5 segments 

 with well marked lateral groove, telsonic segment little shorter than o**", 

 extended to a blunt apex. Eyes large, dark, each with 3 corneal lenses. Peraeo- 

 pod 5 long and slender, its 6*^ joint only two-thirds as long as 5*'^. Peduncle 

 of uropods about one-third, exopod about one-fourth, as long as the endopod; 

 apical spine of exopod much longer than that of endopod. Colour characteristic, 

 large black spots in great numbers, especially dark on the carapace. L. d 

 r7 mm. 9 unknown. 



Paternoster Islands; surface. 



13. N. hirsutus H. J. Hansen 1895 N. h., H. J. Hansen in: Ergeb. Plankton- 

 Exp., C.2 G. c. p. 59 t. 7 f. 3, 3a,b. 



Whole body free from spines or processes but beset with scattered 

 tolerably long hairs. Pseudorostral lobes somewhat upturned, meeting in 

 front, obliqely truncate, antero-lateral margin shallowly concave, lower corner 

 not at all produced, obtusely quadrate and armed with a stout plumose seta. 

 Carapace plump, medio-dorsal line evenly convex. All five pedigerous seg- 

 ments distinct. Telsonic segment not much shorter than 5*^, blunt at apex. 

 Eyes not far apart. Antenna 1, 2'^'^ joint rather longer than 3*^, flagellum 

 of 2 equal joints, accessory rudimentary. Peduncle of uropods longer than 

 the exopod, endopod defective. Colour brownish grey. L. ovigerous 9 1-7 mm, 

 (5 unknown. 



Bermudas. 



