AUSTRALIAN MALACOSTRACA. 307 



528. Paratanais tenuicornis. 



Paratanais tenuicornis, Haswell, 1. c, Vol. vi., p. 194, pi. iv., 

 fig. 3. 



Antennae short ; inner pair stout, the basal segment about 

 three times as long as the second, and the latter twice as large 

 as the last, which is very small. Outer antenna} more slender 

 than the inner ; last joint smaller than the penultimate, which 

 again is as long as the two preceding taken together. First pair 

 of legs very stout ; propodos curved, dactylos slightly geniculate. 

 Caudal appendages short, flagellum with seven articuli. Length 

 about \ in. 



Port Stephens. 



G-enus Apseudes, Leach. 

 Body dorso-ventrally compressed. Upper antennae with two 

 flagella ; lower with one. First pair of legs sub-chelate ; second 

 pair laminate at the extremity ; the rest unguiculate. Caudal 

 appendages with a long multi-articulate flagellum and a shorter 

 secondary flagellum. 



529. Apseudes australis. 



Apseudes australis, Haswell, 1. c, Vol. vi., p. 193, pi. iv., fig. 2. 



Head broad ; a triangular acute rostrum between the bases of 

 the antenna?, with a mesial and two lateral shallow grooves ; a 

 short spine in the middle of the epistome. Thoracic segments 

 transverse, the epimera large, sparsely setose. Abdomen orna- 

 mented with a few longish, fine hairs ; terminal joint as long 

 as all the rest together, twice as long as broad, rounded at the 

 extremity. First joint of the internal antennae long, compressed, 

 longitudinally grooved ; second joint scarcely one-third of the 

 length of the first ; third very small ; flagellum as long as 

 peduncle ; secondary flagellum nearly two-thirds of the length 

 of the principal flagellum. Lower (outer) antennae scarcely 

 longer than the flagellum of the upper ; the second joint of the 

 flagellum the largest, a lamellif orm ovate appendage fringed with 

 slender hairs situated at its inner and distal angle ; third joint 

 very small ; fourth nearly as long as the second, but narrower ; 

 last joint smaller than the fourth ; flagellum equal in length to 

 about two-thirds of the peduncle, ornamented with slender hairs. 

 First pair of thoracic limbs, with the merus, carpus and propodos 



