STEBBINGELLA SCLEROTICA. 99 



The first pair of perceopoda have the under side of the carpus 

 provided with spines, and the hind corner projecting into an 

 acute apical tooth ; the hind margin of the metacarpus is 

 somewhat longer than the under margin of the carpus. The 

 second pair have the carpus more produced than the first 

 pair, with the under margin straight and smooth; the hind 

 margin of the metacarpus is as long as the under margin 

 of the carpus, and is provided with spines. Along the middle 

 of the femur of the last three pairs there is a row of four 

 pits. The seventh pair are shorter than the femur of the sixth. 



The pleon is fully as long as the first five peraeonal segments 

 together; the under margin of the segments is straight; the 

 hind corner is produced and sharp-pointed. 



The last coalesced ural segment is as long as the telson. 



The first pair of uropoda reach to the apex of the last pair. 

 The rami are lanceolate. 



The telson is broad, triangular, and reaches beyond the apex 

 of the last pair of uropoda. 



Syn. 1878, Oxycephalus scleroticus, TH. STREETS. 26, p. 281, pi. 2, fig. 3. 



As to the calcareous and peculiarly sculptured integument STREETS 



says: 



Animal with the tegumentary covering hard and resisting 



. The thorax elevated along the median line into a broad, rounded 

 ridge, with the sides sloping down from the summit; the ridge appearing 

 somewhat nodulated; a row of nodules along the side above the epime- 

 rals; on the fifth epimeral a prominent spine, directed backward; the 

 segments of the thorax decreasing posteriorly, each segment bulging, 

 not overriding its fellow ; the whole surface of the body finely granulated)). 



It is very probable that the female, which he describes, does not 

 belong to this species; it was not taken in the same locality, and it 

 seems not impossible that it may have been a Cranocephalus, since his 

 description of the granulated and nodulous integument refers to the male 

 form only. 



As to this supposed female he says: 



The female of this species is more robust than the male. The 

 head is deeper and broader, more rounded above and below, the notch 

 posterior shallower; the rostrum shorter and narrower. Superior antennae 



