230 



DISCOVERY REPORTS 



Antenna i, 3rd joint longer than 1st, flagellum 10-11 -jointed, accessory flagellum 

 4-jointed. Antenna 2, flagellum 10- 11 -jointed. Epistomial spine strong. 



Gnathopod 1, 6th joint shorter than 5th, oval, longer than broad, palm oblique, not 

 defined from hind margin, 5th and 6th joints both setose. Gnathopod 2 long, carried 

 transversely across the body, 2nd joint linear, 6th shorter than 5th, ovate, palm very 

 oblique, defined by a small tooth from the short hind margin, with three small rounded 

 denticles, finger shorter than palm, 5th and 6th joints setose. 



Peraeopods 1 and 2 slender, feebly setose, dactyl half length of 6th joint. Peraeopod 

 3, 2nd joint large, oblong, expanded behind, 

 hind margin very slightly concave, serrulate, 

 lower hind angle rounded, 4th strongly ex- 

 panded, almost circular, 5th and 6th slender. 

 Peraeopod 4 resembling peraeopod 3 , but hind 

 margin of 2nd joint gently convex and 4th joint 

 oval, not quite so strongly expanded. Peraeo- 

 pod 5, 2nd joints slender, widest proximally, 

 tapering distally, hind margin undulate, entire, 



with only a few setules, 4th linear. 



Uropod 3 slender, peduncle with two stout 



spines on distal margin. 



Remarks. Chilton (19 12) has described and 



figured a 3 and a $ from Gough Island which 



resemble the present specimen very closely. 



The 2nd gnathopod in the two 3S is similar, 



and both specimens have the expanded 4th joint in the posterior peraeopods ; but whereas 



in Chilton's specimen the expansion occurred on peraeopods 3 and 5, here it occurs on 



3 and 4. 



In 1920 Chilton came to the conclusion that the Gough Island specimens were more 

 properly identified as dentatus, Chevr., than as afer, Stebb. He states that specimens from 

 New Zealand are the same as those from Gough Island and that the 1st side-plate and 

 the pleon segments in the New Zealand specimens are dentate as in dentatus ; but the 

 gnathopods are more elongate and slender. Other examples, however, from the 

 Kermadec Islands resembled Chevreux's figures in this respect. The following five 

 characters are tabulated for dentatus and the specimens from the respective localities. 



a. 6. W x at. c. 



Fig. 143. Eurystheus remipes, n.sp. a. Gnathopod 

 2 $. b, c. Peraeopods 3 and 5. d. Telson. 



