230 MR. A. O. WALKER OK SOME 



Maxillipedes with the basal lobe very small, divided to its 



Antennae stout, the flagellum of the lower but little longer 

 than the last joint of the peduncle ; its first joint almost as long 

 as the remaining four together. 



Eirst gnathopods as in S. manna. 



Second gnathopods with the palm of the propodos defined near 

 the base by a triangular tooth, the distal extremity expanded 

 and cut into four blunt lobes, of which the proximal is much the 

 largest ; dactylus with a prominence on the inner margin, coin- 

 ciding with the palmar lobus. 



Perseopods short and strong, the third (meros) joint in the last 

 three pairs much produced backwards, as in Prololium calca- 

 ratum, G. 0. Sars. 



Third uropods with four spines on the upper surface of the 

 peduncle, which is twice as long as the first joint of the ramus. 



Telson with three pairs of dorsal spines on its proximal half, 

 the first pair the smallest. 



Length 2 mm. 



In the form of the hand of the second gnathopods this species 

 approaches S. tenella, Gr. 0. S., and S. Dollfusi, Chevreux ; but 

 both these (perhaps identical) species are remarkable for the 

 length and slenderness of their antennae and perseopods. 



Three males taken in the bottom tow-net 6 miles W.S.W. of 

 Calf of Man, in 23 fath., April 22, 1896. 



Fam. Paramphithoid^. 

 Parapleustes megacheir, n. sp. (PI. 18. figs. 4-4 c.) 



Body smooth ; second segment of pleon (metasome) having a 

 small dorsal tooth, the next three segments dorsally depressed. 



Head nearly as long as the first two segments of the perseon 

 (mesosome), lateral and post-antennal angles slight and obtuse. 

 Eyes wanting. 



Coxal plates of the first two segments of the perseon small and 

 rhomboidal, with the anterior angle acute, especially in the first ; 

 4th coxal plate wide and as deep as the segment. Third pleon- 

 segment with the lower margin strongly and the hind margin 

 slightly curved ; hinder angle obtuse as in P. pulchellus, Gr. 0. 

 Sars. 



Upper antennae about two-thirds the length of the body ; 1st 



