231 



KEY TO SPECIES OF GENUS SPINOSCINA 



1 . In addition to long ventral denticle, pereon somites III-VI with barely 

 noticeable spines on distal surface. In pereopods III-V, 6th segment 



shorter than 5th 1.5. spinosa (Chevr.) 



— In addition to long ventral denticle and small spines, pereon 

 somites III-VI with large lateral spines on distal surface. In 



pereopods III-V, 6th segment longer than 5th 



2. S. echinata (Vinogr.) 



1. Spinoscina spinosa (Chevreux, 1914) (Fig. 97) 



Chevreux, 1914: 7 (Acanthoscina), 1935: 166 (Acanthoscina); 

 Wagler, 1926: 444 (Ctenoscina); Vinogradov, 1957: 219 (Ctenoscina). 



Length of sexually mature females 7.5-8.5 mm; males not known. 



The body is narrow. The longest dorsal denticles are found on pereon 

 somites IV-VII. Moreover, on the distal surface of pereon somites I- VII 

 on each side there are some (1-6) barely noticeable spines. The head 

 is short and high, with long forwardly directed lateral spines located 



193 



Fig. 97. Spinoscina spinosa (Chevreux), female (after Vinogradov, 1957). 



