175 



148 



Fig. 66. Sciina spinosa Vosseler, female. 



markedly. The outer lobes of the maxillipeds are short and broad, taper- 

 ing distally to some degree; the length of the inner lobes varies greatly 

 and may constitute 1/4-1/2 the length of the outer lobes. 



Pereopods I and II have broad, highly pubescent 5th and 6th seg- 

 ments, of which the former is slightly longer than or equal to the 2nd 

 segment. Pereopods III and FV are much longer than pereopods I and II; 

 their 4th segment is notably shorter than the 5th and almost equal to the 

 6th in length; the distal part of the posterior margin of the 6th segment 

 is curved. The 2nd segment of pereopods V is shorter than all the rest 

 together, denticulate on the anterior and posterior margins, its distal pro- 

 cess 2-3 times as long as the 3rd segment though it may also be shorter 

 than it, and has one denticle on the anterior margin; the 4th segment is 

 slightly longer than the 5th and 1.5-2.0 times longer than the 6th segment, 

 which is short and slightly curved. Pereopods VI have roughly the same 

 proportions as pereopods V but are shorter, and the margins of their 2nd 

 segment are not denticulate; the claw is short and slightly curved. Pere- 

 opods VII are slightly shorter but generally stronger than pereopods VI; 

 the 4th and 5th segments are equal and each is slightly longer than the 

 6th segment, although there are specimens with a relatively longer 6th 

 segment; the claw is short and uncinately curved. 



The uropods are short and broad. Uropods I bear numerous large 

 spines on the posterior margin; the endopodite has a finely denticulate 

 anterior margin. Uropods II have a smooth anterior margin and are finely 

 denticulate in the distal part of the posterior margin. In uropods III both 

 the posterior and anterior margin of the basipodite are smooth; the pos- 

 terior margin of the endopodite and the anterior margin of the exopodite 

 are likewise smooth. The telson is large and oblong-triangular. 



Notes: S. spinosa is characterized by a thickset body, relatively short 

 antennae, large protruding mouth cone, and strong short pereopods. Pere- 

 opods VII are strong, sometimes not shorter than pereopods VI, and their 



