Cumacea: 2. Sympodommatidae, 1. Sympodormua 



17 



Fig. 12. 



r. 



3. S. diomedeae (Calm.) 1912 Heterocuma d., Caiman in: P. U. S. Mus., vAl 

 p. 612 tf. 6— 9 I 1912 Sympodomma d., T. Stebbing in: Ann. S. Afr. Mus., u 10 p. 138. 



Pseudorostral lobes separated by the linguiform eyelobe -, an angular an- 

 tennal sinus formed by blunt moderately projecting antero-lateral angle, followed 

 by serration of lower margin anteriorly. Carina on frontal lobe surmounted by 3 

 large forward pointing teeth, to which succeed a pair of adjacent tuberculated 

 ridges, sides of carapace dotted with rounded tubercles. First pedigerous segment 

 overlapped by sides of second, this and the 3 following segments having each a 

 median pair of adjacent ridges, and to these are added on the last three a dorso- 

 lateral pair. Both pairs are continued on the pleon segments, but become less 

 distinct towards the last of them. The third and fourth pedigerous segments in 

 the male have each a ventral spine, found also in the female on the fourth, A 

 pigmented eye occupies the apex of the eyelobe. The first peraeopods have the 

 sixth joint not twice as long as the fifth, and nearly a third longer than the 

 seventh. In both sexes the first three pairs of peraeopods have well developed 

 exopods. Peduncle of uropods, fringed with a mixture of long and short 

 spines, is nearly twice as long as the endopod, of which the 2 subequal spinose 

 and setose joints are together rather shorter 

 than the exopod. L. q immature, 14*3 mm. 



Off Ose Zaki, Honshu Island, Japan ; depth 

 110 — 128 m. 



4. S. afrieanum Stebb. 1912 S. africcmus, 

 T. Stebbing in: Ann. S. Afr. Mus., v. 10 p. 138 t. 50 (2). 



Pseudorostral lobes, eyelobe, and frontal 

 lobe as in the preceding species, but the 3 large 

 teeth are succeeded by a single carina, not tuber- 

 culate, nor have the sides of the carapace 

 tubercles, except a single pair anteriorly outside 

 the frontal lobe. The pedigerous segments and 

 pleon are in near agreement also with those of 

 S. diomedeae, but no ventral spine was found 

 on the third or fourth pedigerous segment. 

 The apex of the eyelobe is pellucid, apparently 

 occupied by numerous small lenses. The first 

 antenna has a geniculate first joint as long as 

 the subequal second and thii-d joints combined; 

 the minute 2-jointed accessory flagellum is 

 shorter than the first joint of the primary. 

 First maxilla with elongate palp; second nor- 

 mally armed, unusually long. Second maxilli- 

 ped with long and slender second joint. The 

 long first peraeopods have the sixth joint less 

 than twice the fifth and not a fourth longer 

 than the seventh. The short second pair- have 

 the 6*^ joint not longer than the third, the 

 seventh as long as fifth and sixth combined. 

 Exopods on the third peraeopods not clearly 

 made out. Peduncle of uropods carinate, fringed 

 with unequal spines; the endopod about two- 

 thirds as long as peduncle, a little longer than the 

 exopod, its first joint about twice as long as the second. L., (S subadult, 18mm, 



South Africa, Cape Point E. by N. 29 miles. 

 Das Tierreich. 39. Lief.: T. R. R. Stebbing, Cumacea. 2 



Fig. n. 



S. afrieanum Stebbing, with eye 



(Fig. 12). 



