CAI.IFORNIA CUMACEA — ZIMIMER 429 



The peduncle of the uropods (fig. 35, c) is about as long as the 

 last two abdominal segments taken together. On its inner margin 

 there are about seven spines. The endopod is about half as long as 

 the peduncle and on its inner margin also carries about seven spines. 

 The exopod is, as usual, slenderer and shorter than the endopod. 



Length. — About 4 mm. 



Occurrence. — Between Balboa and Corona Del Mar, Calif., 7-15 

 fathoms, March and May 1933 (no. 28), two specimens, a female with 

 brood pouch and an adult female (holotype, U.S.N.M. no. 71438), 

 together with two specimens of Oxyurostylis paeifica. 



Remarks. — The species is readily distinguished from all other 

 hitherto known species by the hollowed-out groove on its carapace. 

 Gamq)ylaspis sulcata has a similar groove, but it is wider, with its 

 margin either side forming more or less of a ridge or fold. 



Genus PROCAMPYLASPIS Bonnier 



PROCAAIPYLASPIS species 



Occurrence. — Off Balboa, Calif., 15 fathoms, February 16, 1933 

 (no. 31), a female with brood pouch. The specimen undoubtedly 

 represents a new^ species. The carapace has on each side a wide 

 longitudinal groove extending about two-thirds the length of the 

 carapace. The dorsum between the two grooves carries a number 

 of not very pronounced tubercles. Three larger but much flattened 

 tubercles are present close to the posterior margin of the carapace, 

 the largest in the middle between the smaller lateral ones. The speci- 

 men is somewhat damaged and is thickly encrusted wnth sand, which 

 cannot be removed without further harm. For this reason I refrain 

 from basing the description of a new' form upon it and leave it 

 unnamed. 



Genus HEMILAMPROPS Sars 



HEMILAMPROPS (?) CALIFORNICA. new species 



Figure 36 



Female with hrood pouch. — The thoracic portion of the body is 

 somewhat longer than the abdomen, with the exception of the telson. 

 The carapace is as long as the first four free thoracic somites taken 

 together. In lateral view its anterior and upper margins appear 

 to meet at right angles. From above (fig. 36, 6) it appears anteriorly 

 broadly truncate. A subrostral notch is scarcely perceptible. On 

 either side of the carapace is an arched fold, which, beginning at 

 the pseudorostral margin, runs obliquely backward and upward and, 

 bending around in a symmetrical turn, back anteriorly to merge 

 with the median carina found on the frontal lobe. The ocular lobe 

 is distinct and large. On it are seven lenses, one in the center, 



