187 



segment is considerably longer than the 4th, which is somewhat longer 

 than the 6th; the latter is longer than the 5th; the claw is short. Pereopods 

 VII are very short and weak; their 2nd segment is not longer than that of 

 pereopods VI; the 4th and 5th segments are same length; the 6th segment 

 is slightly longer; the claw is short and triangular. 



Scina rattrayi rattrayi Stebbing, 1895 (Fig. 73) 



Stebbing, 1895: 358, 1904: 26; Chevreux, 1900: 123; Stephensen, 

 1918: 29; Wagler, 1926: 375, 1927: 104; Vinogradov, 1964: I'id.—bova- 

 //h vosseler, 1901: 105. 



Length of sexually mature specimens 2.5^.0 mm. 



The length of the outer lobes of the maxillipeds is roughly twice 

 their maximum width. 



The uropods are strongly armed. In uropods I the posterior margin 

 bears sparse long curved spines; the anterior margin of the basipodite 

 also bears large spines and is denticulate between the spines; the anterior 

 margin of the endopodite is finely denticulate. In uropods II the anterior 

 margin of the basipodite has long curved spines while its posterior margin 

 is coarsely denticulate; these denticles are finely denticulate in turn. The 

 posterior margin of the basipodite of uropods III bears a few (3^) long 



158 curved spines. The telson is galeiform and its length is only slightly more 

 than its width. 



Distribution: It is known from various regions in the Atlantic Ocean 

 (51° N, 33° S), the Mediterranean Sea and the Indian Ocean, inhabiting 

 the northern regions (Gulf of Aden, Sri Lanka) to Antarctic waters 

 (64° 29' S, 85° 27' E) as well as the equatorial regions of the Pacific 

 Ocean. It is found in catches from depths of 150, 200-500, 570, and 

 625 m and in total catches from depths greater than 500 m to the surface. 



Scina rattrayi keilhacki Uaeler, 1926 (Fig. 74) 



Wagler, 1926: 380; Vinogradov, 1956: 207, 1957: 216. 

 Length of sexually mature females 4-5 mm, of males 5-6 mm. 

 This subspecies differs from the typical form in relatively longer 

 outer lobes of the maxillipeds and principal ornamentation of the 

 uropods, which are devoid of the long curved marginal spines so 

 characteristic of the typical form. The posterior margin of uropods I, the 

 anterior margin of the basipodite of uropods II, and the posterior margin 

 of the basipodite of uropods III are smooth; the anterior margin of the 

 basipodite of uropods I is finely denticulate and without large denticles. 

 The telson is oblong-triangular with a rounded apex; its length is almost 



159 twice its width. In some specimens the ornamentation of uropods I is 

 similar to that in 5. rattrayi keilhacki and that of uropods II and III as 

 in S. rattrayi rattrayi. 



