BY GEO. M. THOMSON, F.L.S. 51 



the eye-sockets, and on the upper x^art of it are two minutely 

 setose ridges which converge towards it extremity. The eye- 

 peduncles are very short, and the acutely- pointed scales of 

 the outer antennae hardly reach beyond them. The whole 

 body is nearly smooth, and there are only a few small hairs on 

 tho outer joints of the legs. 



Fam. Palcemonidce. 



6. Leander intermedius. Stimpson. 



A single specimen of this prawn — a female carrying an 

 immense number of ova beneath the abdomen, — was obtained 

 on the East Coast by Mr. A. Simson. The species has not 

 been recorded from Tasmania before. 



Tribe Schizojpoda. 

 Fam. Anaspidse, fam. nov. 



Carapace wanting ; the cephalon and all the segments of 

 the body distinct. Maxillipeds and succeeding seven pairs 

 of legs nearly uniform in structure, adapted for walking. 

 Branchiae lamellar, all external. No egg-pouch. Pleopoda 

 with well-developed natatory exopodites ; endopodites of first 

 and second abdominal segments, specially modified in the 

 males as copulatory appendages. IJropoda, normal. Deve- 

 lopment ? 



Genus Anasjpis, gen. nov. 



Integument thin and flexible. Wliole body divided into 

 fifteen distinct subequal segments, viz., cephalon, eight 

 thoracic, and six abdominal. Eyes well developed. First 

 antennae, with three- jointed peduncle and twoflagella. Second 

 antennae, with well developed scale on the second joint. Man- 

 dibles with three-jointed palpi. First maxillae two-branched ; 

 second pair four- branched. Maxillipeds pediform, with two 

 rudimentary branchiae projecting externally from the coxa ; 

 exopodite small and rudimentary. Le^s generally uniform 

 in structure, seven-jointed, each furnished with a claw-like 

 dactylos. The coxa of each leg (except those of the last 

 pair) bear two external lamellar branchiae which project for- 

 ward, and the bases bears a well-developed natatory exopo- 

 dite. Genital opening of the female on the sternum in front 

 of the last pair of thoracic legs. Telson short, rouuded. 

 IJropoda with the plates subequal; inner with a slight longi- 

 tudinal median ridge ; outer, with an imperfect transverse 

 articulation near the middle. 



7. Anaspis tasmanise, sp. nov. 



The characters of this remarkable and interesting shrimp — 

 the only truly freshwater schizopod I think yet found — are 

 briefly expressed in the diagnosis of the genus. A few de- 



