412 Annals of the South African Museum. 



in the appendages are important, especially as regards the second 

 peraeopods and the inner ramus of the uropods. 



The eyes are obscure. The first antennae have a large geniculate 

 iirst joint, exceeding in length the two following combined; the third 

 is only a little longer than the second. The second antennas have 

 the long joint of the peduncle and the preceding short one thickly 

 fringed. The branchial leaflets of the hist maxillipeds are numerous. 

 The second maxillipeds have the long second joint rather abruptly 

 narrowed distally. In the third maxillipeds the fourth joint is 

 produced broadly but distally pointed, the fifth joint is very much 

 widened distally, the two following joints being narrow. The second 

 joint of the first peraeopods nearly but not quite equals in length the 

 remainder of the limb, and is subequal in length to the small second 

 peraeopod. In that limb the second joint is widest distally, the very 

 short third joint being abruptly narrower. The uropods have a 

 peduncle subequal to the rami, of which the outer is fringed on the 

 inner margin with slightly plumose setae and tipped with three 

 spines, one much longer than the others ; the inner ramus has a 

 Iirst joint about half as long as the second and much stouter, fringed 

 with ten pectinate spines, the apical much the longest ; the second 

 joint has the inner margin fringed with a dozen more or less 

 pectinate spines, the lowest of which is the largest, at some distance 

 from the apex ; between it and the inward-pointing spine at the apex 

 the joint tapers and carries on its inner margin 8 spinules, in this 

 feature differing much from the male of I. robusta. The length of 

 the specimen was 9 mm. That of I. robusta is given as 6-2 mm. 

 A specimen of the present species, 5 mm. in length, devoid of 

 pleopods, has uropods agreeing in armature with Hansen's species. 



No. 83, obtained by Dr. Gilchrist, in lat. 32° 53' 30" S., long. 

 28° 11' 00" E., from depth of 75 m. 



The specific name is chosen out of respect to Dr. Carl Zimmer, 

 who has excellently w^orked out the results of the Valdivia 

 Expedition for this group. 



-•'■ IPHiNoii CRASsiPEs, Hansen. 

 Plate XLV. 



1895. Iphinoe crassipes, Hansen, Isop., Cumac. und Stomat. der 



Plankton Exp., p. 58, pi. 6, figs. 4, 4a-/. 



Hansen's single specimen was a young male, only 3*2 mm. 



long, from the Gulf of Guinea. Neverthe ess his figures and 



description leave practically no doubt that the fully developed 



