30 Cumacea: 3. Eodotriidae. 4. Cyclaspis 



{Three carinae on last 2 pedigerous segments and 

 first 2 of pleon 20. C. australis 

 A single carina from last pedigerous segment to end 

 of pleon 21. C. quadrituberculata 



, Fseudorostral lobes barely meeting in front of 



I eyelobe 22. C. gigas 



) Pseudorostral lobes meeting well in front of eye- 

 l lobe — 23. 



f Carapace with several longitudinal ribs 23. C. costata 



\ Carapace without such ribs — 24. 



j Carapace with 2 pairs of obliquely transverse ridges 24. C. bistriata 



\ Carapace with 3 pairs of transverse ridges .... 25. C. triplicata 



1. C. glacialis H. J. Hansen 1908 C.g., H. J. Hansen in: Result. Voy. Belgica, 

 Schiz. Cum. p. 15 t. 3 f. la— g. 



Pseudorostral lobes only just touching in front of the eyelobe; antero- 

 lateral corners each forming a subacute tooth. Carapace with a rounded longi- 

 tudinal median carina, broad for the first three-fifths of the length, this part 

 surmounted by a narrow secondary carina and flanked by a pair of hollows, 

 each occupied centrally by an oblong arched area. Pedigerous segment 

 2 constituting raised hind margin of the carapace, the abruptly lower 3* and 

 4*^^ not carinate, the S^^'^ with carina. Pleon with narrowly rounded carina, 

 gradually vanishing on the, telsonic segment, which is decidedly shorter than 

 the b^^. Eyelobe rounded in front, then constricted, without corneal lenses. 

 Maxilliped 3, 2^^ joint broader at base than distally, 4*^^ distally serrated on 

 medial side, 7*^ as long as G^h. Peraeopod 1, 2"'^ joint rather longer than 

 rest of limb, markedly tapering in distal third of its length, 5*^ joint as 

 long as 6**^, twice as "long as 7*^. Peduncle of uropods equal in length to 

 the rami. Colour yellow with rounded white spots. L. 9 without marsupium 

 10*3 mm, d unknown. 



Lat. 710 14' S., long. SO" 14' W. (Antarctic). 



2. C. sibogae Calm. 1905 C. s., Caiman in: Siboga-Exp., pars 36 p. 4 t. 1 f. 4 — 6 | 

 1907 ('. s., Caiman in: Tr. zool. Soc. London, v. I81 p. 7. 



Pseudorostral lobes short, truncate, slightly upturned, not meeting in 

 front of the eyelobe; antero-lateral tooth projecting a little in front of the 

 apices. Carapace subcylindrical, with medio-dorsal keel, evanescent to the 

 rear, flanked by a low pair of rounded ridges between two strong transverse 

 ridges, the anterior running nearly vertically down on each side, where it forms 

 an obtuse tooth with the lateral curve of the second ridge. A third ridge 

 curves towards the second without reaching it. Pedigerous segment 2 is 

 distinct, with rounded dorsal crest; 5**1 segment the longest. Pleon segments 

 subcylindrical, with 2 ridges on each side converging distally, the lateral 

 articular processes very slight, telsonic segment little shorter than the. fifth. 

 Eyelobe long and narrow, extending to the apices of the pseudorostrum, 

 devoid of corneal lenses. Peraeopod 1, 2"^ joint considerably longer than 

 rest of limb, 3'^ and 4*^ combined little longer than b^^, all three little longer 

 than 6"', which is little longer than the 7*'^. Peduncle of uropods slender, 

 rami broken. L 9 subadult 16*5 mm. 



Lat. 0« 51'-1 S., long. 129" 48'-8 E., depth 411 m. 



3. C. longieaudata O. Sars 1865 C. l, G. 0. Sars in: Forh. Selsk. Christian., 

 1864 p. 207 I 1876 C. /., A. M. Norman in: Jeffreys in: P. R. Soc. London, u 25 p. 214 | 

 1879 Cyclapis l, A. M. Norman in: Ann. nat. Hist., ser. 5 v.^ p. 73 | 1896 Cyclaspis l, 



