556 



3. Genus Paratyhis Glaus, 1879 



Glaus, 1879b: 13; 1887: 39; Stebbing, 1888: 1476; Stephensen, 

 1925a: 220. 



Small animals. The body is compact, the head higher than long, 

 its length approximately equal to its width. The two distal segments 

 of antennae 11 in males are about half the length of the 2nd and 3rd 

 segments. Pereopods I are simple; pereopods 11 have poorly developed 

 chelae. The 2nd segment of pereopods I and II is narrow and long, the 

 3rd-7th segments together are shorter than the 2nd segment; the 5th 

 segment, if broadened, is only slightly so; the posterior distal process of 

 the 5th segment is small or absent. The 2nd segment of pereopods V is 

 oval and the 3rd segment is articulated with its distal margin. The 2nd 

 segment of pereopods VI is operculiform; among the distal segments 

 the 4th is the largest and has a small distal process; the 4th and 5th 

 segments have a fine pecten long the anterior margin; the 6th segment is 

 clawlike; the claw is absent. The 2nd segment of pereopods VII is barely 

 broadened; the distal segments vary from one to four but sometimes are 

 totally absent. 



The basipodite of uropods I has a denticulate anterior margin. The 

 endopodite is fused with the basipodite or is indistinctly separated from 

 it. The telson has a rounded tip and is fused with the last urosomite. 



Type species: Paratyphis maculatus Glaus, 1879. 



Only a comparatively small number of representatives of Paratyhis 

 are known to date and thus the significance of specific characters cannot 

 be assessed definitively. Hence the subdivision of the genus Paratyphis 

 into species still remains somewhat arbitrary. 



KEY TO SPECIES OF GENUS PARATYPHIS 



1. Second segment of pereopods V uniformly rounded at distal end, 

 without notch for 3rd segment. Lateral "fissure" of 2nd segment of 



pereopods VI longer than 1/4 length of 2nd segment 



3. P. spinosus Spandl. 



— Second segment of pereopods V with notch in distal end 

 accommodating 3rd segment. "Fissure" of 2nd segment of 

 pereopods VI semilunar, much shorter than 1/4 length of segment . . 

 2. 



2. Fifth segment of pereopods II with denticulate posterior distal pro- 

 cess, reaching 1/3 length of 6th segment 2. P. parvus Glaus. 



— Fifth segment of pereopods II without posterior distal process or pro- 

 cess small, shorter than 1/3 length of 6th segment and with smooth 

 margins 3. 



