187 



three on the merus, the last of these being near the distal 

 end; these spines are short and are difficult to see, being 

 so closely pressed to the joint as to have almost the nature 

 of scales. 



The uropods are longer than the telson, the peduncle 

 is very short, its outer lobe is rounded, the rami are mode- 

 rately broad, the external margin of the outer one nearly 

 straight, ending in a well-marked tooth with two spines 

 close to it. The division is curved. 



The telson is rather narrow, tapering to end in four 

 spines — besides the small teeth at the angles — two each side, 

 the inner ones longer ; medianly there are two well-develop- 

 ed plumose setae. The quadrately-placed spines of the dor- 

 sal surface project considerably. 



The ova are small and numerous. 



Length, omitting rostrum and telson, 16 mm. 

 ,, of carapace, 6 mm. 

 ,, ,, third maxilliped. 9 mm. 



South Australian coast. 



Types in Adelaide Museum. 



Processa gracilis, n. sp. PL xxv., tigs. 'S-oc 



The body is slender, the carapace is about as long as 

 the first four segments of the pleon, slightly depressed. The 

 rostrum is short and slender, almost to the base, bears a 

 few hairs at the tip, and projects more than half the dis- 

 tance of the ophthalmopods. The antero-lateral margin 

 bears a small tooth below the eye peduncle, followed by 

 a faint insinuation behind the antennal peduncle, below this 

 the lateral margin quickly slopes backwards. 



The segments of the pleon do not differ much in dor- 

 sal length, and the pleura are not deep ; that of the fifth 

 segment is without a tooth near the posterior angle. 



The ophthalmopods are robust, pyriform, but swollen at 

 their bases on the inner sides, then abruptly becoming very 

 narrow at the joint. The eyes are well developed, and do 

 not touch anteriorly. 



The antennular peduncle is robust, the first joint ver- 

 tically compressed and hollowed in the usual manner, the 

 stylocerite is spiniform and well separated from the body 

 of the joint, reaching about three-fourths its length, the sec- 

 ond and third joints are subequal in length, the upper fla- 

 gellum is robust, rather longer than the peduncle, and cloth- 

 ed with dense cilia ; the lower flagellum is very slender, and 

 more than twice as long as the upper. 



The antennal scale is long, rather narrow, rigid on the 

 external margin, the distal spine scarcely projecting farther 



