226 



THETIS SCIENTIFIC RESULTS. 



slightly wider beyond the middle; the inner margin is straight 

 and the outer curved ; the apex is obtusely rounded and strongly 

 ciliated. 



Uropods as long or longer than the pleon; outer ramus more 

 than three times as long as broad, gradually tapering to a sub- 

 acute point; in outline the inner margin and 

 the proximal two-thirds of the outer is slightly 

 convex, whilst the distal third is concave; first 

 joint of the inner ramus one-fourth longer than 

 the outer and four times as long as broad at the 

 extremities; second joint a little less than three 

 times as long as broad at the base, gradually 

 tapering to half its basal width 

 at the obtusely rounded, setose 

 extremity. 



Telson equal in length to 

 the pleon, lanceolate, suddenly 

 narrowed distally to a subacute 

 point. 



Eyes undistinguishable, 

 destitute of pigment. 



Superior antennse having 

 the peduncle (in situ) equal in 

 length to the first two joints 

 of the inferior antennae ; when 

 detached and placed side by 

 side the peduncle exceeds the 

 two joints by about 0*5 mm. 

 Basal joint stout, two and a 

 half times as long as broad, 

 longer than the two following 

 subequal joints combined. 

 Flagelluni more than twice as 

 long as the peduncle, consisting of twenty-eight articulations, 

 first joint* broader than long, second one-fourth longer than 

 broad, third to sixth broader than long; the remaining joints 

 gradually increase in length, and the distal ones are two or three 

 times as long as broad ; there are a few long sette on the terminal 

 joint of the peduncle and the flagellum bears one or two short 

 hairs on the inner apical angle of each articulation. 



Inferior antennae having the peduncle equal in length to the 

 flagellum of the superior. Basal joint as broad as long, con- 

 stricted in the middle and dilated distally, second stout, twice as 

 long as broad, third a little longer than broad, with distal border 



* Structurally this joint appears to be like a fourth joint of the peduncle. 



Outer JlAMus of 



Uropod. 



Fig. 196. 



Inner Ramus of 



Uropod. 



Fig. 19c. 



