524 MK. H. N. RIDLEY ON THE 



front of the cervical suture larger than tliose behind it. 

 Posterior margin of the cervical suture furnished above with 

 4> or 5 spines, and laterally witli 3 or 4 larger ones. Postero- 

 lateral portions of ce2)halothorax almost smooth ; antero-lateral 

 portions beset with sjjines arranged more or less in longitudinal 

 series. Anterior marginal excavation adjoiniug the basal an- 

 tennal segment armed with four spines. 



Cephalothorax furuislied in front with a pointed rostrum, 

 which starts upon the anterior half of the cephalic portion of the 

 carapace and reaches almost as far forwards as the front margin 

 of the antennular peduncle. Upon each side the rostrum ex- 

 tends horizontally over the basal portion of the eye. Puruished 

 above with eleven teeth, of which five are larger than the rest, 

 and below near the apex with one tooth. 



Proximal portion of antennular peduncle furnished externally 

 with a strong curved spine ; upper surface of peduncle with 

 three spines ; under surfiice with four on the inner margin and 

 one on the outer margin. 



Basal segment of auteunal peduncle furnished above with two 

 spines externally, and with a laminate process internally ; second 

 segment covered by the basal segment, furnished below with 

 three spines ; third segment with one spine externally and with 

 three internally. External margin of antennal scale with five or 

 six fine teeth, iuternal margin fringed ; antennal scale somewhat 

 triangular, laminate, projectiug slightly in advance of tbe 

 antennal peduncle, wdiich is approximately as long as tlie anten- 

 nular peduncle. 



Epistome furnished with four strong teeth. 



Ischial segment of external niaxillipede furnished distally with 

 three spines externally, and with one sjnne internally ; meral 

 segment externally with tlirec strong spines. Internal margin 

 of all the segments clothed with hairs. 



Segments of first and second pairs of legs simple, more or less 

 cylindrical, unspined. 



Meropodite of third pair of legs cylindrical, spined, with some 

 larger sharp spines near the distal extremity on the inner 

 surface. Carjjopodite rounded below, flattened and hollowed 

 above ; the hollowed portion with a few small spines, the rest 

 thickly spined ; spines on the outer surface larger. 



Inner surface of the hand covered with small tubercles ; outer 



