294 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL.21 



Breeding: The egg-bearing female above was obtained by the Alba- 

 tross in the Strait of Magellan in February, which is mid-summer in the 

 Southern Hemisphere. 



Remarks: The characters formerly used to differentiate Libidoclaea 

 smithi as a full species are here used to distinguish it as a subspecies of 

 L. granaria. It will be noted that they are differences of degree, rather 

 than of kind, having reference to relative lengths of spines of carapace 

 and rostrum, rather than to the different placement of any of them. 

 Retention of smithi as a subspecific designation is based upon evidence 

 that, Lenz's apparently contradictory record notwithstanding, its distri- 

 bution can be correlated with lower temperature and greater depth than 

 temperatures and depths appropriate to typical Libidoclaea granaria. A 

 comparative situation exists in the Northern Hemisphere with respect to 

 Chorilia longipes and C. longipes turgida, the latter being the deep water 

 form. There is no apparent difference between the male first pleopods of 

 Libidoclaea granaria and of L. granaria smithi. (See PI. P, figs. 7 and 8.) 



Genus NOTOLOPAS Stimpson 



Notolopas Stimpson, 1871a, p. 96. Miers, 1886, p. 64. Rathbun, 1925, 

 p. 287. 

 Type: Notolopas lamellatus Stimpson, by monotypy. 



Description: Carapace subpyriform, moderately convex, and rounded 

 posteriorly; the posterior margin more or less distinctly carinated, the 

 dorsal surface bearing a few spines. The orbits having a single hiatus, 

 or a hiatus and a notch in the superior margin, and a wider hiatus below, 

 and bearing a preocular spine or tooth. Rostrum well developed, with 

 the spines coalescent at the base and afterwards divergent. Eyes short, 

 retractile. Antennae with the basal [article] considerably enlarged with 

 a spine or tooth at the anteroexternal angle, and often another on the 

 exterior margin; the following [articles] slender and not concealed by 

 the rostral spines. The merus of the external maxillipeds distally trun- 

 cated, with the anteroexternal angle rounded, a little, if at all, produced, 

 and the anterointernal angle very slightly emarginate. 



The chelipeds in the adult male slender; palm somewhat elongated 

 and slightly compressed ; fingers with but a small intermarginal hiatus. 

 The ambulatory legs very slender, with the [segments] subcylindrical, 

 the first pair considerably the longest ; the dactyli slightly curved and 

 nearly as long as the [propodi]. 



Abdomen (in the male) distinctly seven- [segmented]. (Miers) 



