mo.1653. PACIFIC COAST COPEPODS -WILSON. 455 



The first four pairs of legs arc biramose. the endopods longer than 

 the exopods; the former are quite distinctly three-jointed, the basal 

 joint carrying an immense sickle-shaped spine on it- inner margin 

 and another smaller one at the outer distal corner: the terminal joint 

 ends in two or three long spines. The exopods carry a single long 

 curved spine at their tip and a row of short and stoui ones along their 

 outer margin. From the arrangement of these spines we gel the sug- 

 gestion that the exopods are three-jointed as well as the endopods, 

 Inn the joints themselves can not be distinguished. The fifth lei:- are 

 rudimentary and consist of a mere stump, long and (inner-like, and 

 armed with a few short spines. 



Total length, 2.5 mm. Length of carapace, 0.5 mm.; width of 

 same, <>.: , ,7r> mm. Length of egg tubes, 1 mm. 



Color. — (preserved material) a uniform grayish white, without 

 pigment markings of any sort : egg tubes yellowish or light orange. 



(iniriinifu. furnished with claws, in allusion to the large claws on 

 the first antenna 1 .) 



This species is sufficiently distinguished from the others of the 

 genus by its slender and tapering body form, by the large claw- on 

 the first antennas, and by the immense size and the shape <»f the 

 second maxillipeds. 



HATSCHEKIA PINGUIS. new species. 



Plate I. \xv. 



Most and record of */>< cvna ns. — Both sexes were obtained by Doctor 

 McClendon from the gills of the California conger eel. Lycodontis 

 moid, i.e. at La Jolla, California. They are taken as the types of the 

 new species and are Cat. No. 38560, U.S.N.M. 



Female.- — Body short and stout, made up of three part- or regions, 

 ;i head, a U-w thorax, and a rudimentary abdomen. Head covered 

 with a carapace circular in outline with evenly rounded margins and 

 dor-al grooves as shown in fig. 91. This carapace differs from that 

 of recorded species in being wider anteriorly ami somewhat narrowed 

 posteriorly. 



The so-called genital segment is really in the present species a 

 fusion of all the thorax segments, as can he plainly seen in the male. 

 It i- almost a regular ellipse in outline, only a trifle longer than wide, 

 and gives the animal a very plump appearance, another respect in 

 which it differs markedly from recorded species. This U-^ thorax is 

 twice the length of the carapace and once and three-fifth- it- width. 

 At the anterior end the two segments which hear the swimming legs 

 are indistinguishably fused, but are separated from the remainder 



of the segments by a fairly well defined groove, which -how- a- a 

 shallow notch on each lateral margin. At the posterior end between 



