jio.1653. PACIFIC COAST COPEPODS -WILSON. 457 



Fused thorax segments also transversely elliptical, one-sixth wider 

 than long. In the center over the digestive tube the jointing of this 

 fused portion appears distinctly, and it can be seen that there are 

 apparently live segments fused together, all of about the same length. 

 The first of these, however, is itself really a fusion of the first and 

 second segments and corresponds to the similarly fused section in 

 the hotly of the female. This is attested by the fact that it bears 

 on its ventral surface the two pair- of swimming legs. 



The lateral areas project backward in two large rounded knobs 

 at the posterior corners, between which is a narrow and shallow 

 sinus. On each side there is a small spine projecting backward 

 from the margin opposite the base of the abdomen. This latter is 

 small and one- jointed : it is attached to the ventral surface of the 

 thorax and i- partly concealed by the posterior lobes. The anal 

 laminae are narrow, divergent, and considerably longer than the 

 abdomen. Each i- five time- as long as wide and is armed with a 

 stout seta on its outer margin near the base and two others at the 

 tip, one of which is much longer than the other and curved upward. 

 The appendages are similar to those of the female save an increase 

 in size in the maxillipeds which project much farther beyond the 

 lateral margins of the carapace. 



The testes occupy positions corresponding to those of the ovaries in 

 the female, except that they are inclined toward the central axis 

 rather than parallel with it. Each is cylindrical with rounded ends 

 and starts from a point opposite and close to the base of the posterior 

 sinus and extends diagonally outward and forward to about the 

 center of the second of the fused segments, not reaching the first one 

 at all. 



Total length, 0.85 mm. Length of carapace. 0.33 mm.; of fused 

 thorax segments, 0.45 mm. Width of carapace. 0.1 mm.: of fused 

 thorax segments, <)..V> mm. 



Color.- More of a cream or pink than in the female, the testes :i 

 deep reddish orange; digestive tract sprinkled with red or orange, 

 ■specially at the anterior end of the fused thorax. 



(pinguis, stout, corpulent, in allusion to the general body form. ) 



The only other species for which a male ha- been described is 

 //. hippoglossi Ivroyer. T. Scott found a single male of this species 

 upon a halibut in the fish market at Aberdeen and has described it in 

 one of his excellent memoirs." It conform- in it- structure to the 

 female, as do the two -exes of the pre-eni species. It also -how - 

 many points of generic resemblance to the male of the present species, 

 particularly in the enlarged second antenna', the more distinct seg- 

 mentation of the thorax, the visibility of the abdomen, and the rela- 

 tive size and elongation of the anal laminae. It may be -aid of these 



" mm. p. 126, pi. vii, Qg. 11. 



