AUSTBALIAN MALACOSTEACA. 



167 



Carapace strongly compressed, becoming rather narrower in 

 front. A strong horizontal tooth in the middle of the hinder 

 border of the carapace. Branchial regions strongly granulated 

 at the front border and on the surface. Eostrum rather thick, 

 eyes prominent, with a row of impressed points on either side, in 

 which hairs are inserted. At some distance from the rostrum 

 on either side is a raised longitudinal line which ends in front in 

 a tooth. Hepatic region roughly granulated. Legs strongly 

 toothed, claws and tarsi thickly fringed with hairs. Arm with a 

 long bent very acute tooth at its apex. Carpus with a row of 

 thick teeth above. Hand large, with two longitudinal raised 

 lines on its upper border. Immobile finger very small, mobile 

 finger larger with a deep longitudinal groove on either side. 

 [Hess.] 



Sydney (Hess). 



314. Thalassina sp. 



The burrows of Thalassina are abundant among the mangroves 

 all along the coast of Queensland. There are only some frag- 

 ments of one of these in the Australian Museum collection 

 sufficient, however, to shew that the species is distinct from both 

 T. scorpionoides and T. maxima. 



Port Curtis. 



Family CALLIAJSfASSIDM. 

 Caudal appendages broad. External maxillipedes operculif orm. 



G-enus Callianassa, Leach. 



Carapace very small. A small rostral spine. External 

 maxillipedes sometimes pediform, sometimes expanded and 

 operculiform. Second pair of legs slender, terminating in small 

 chela?. Third pair terminating in a very small dactylus ; the 

 propodos expanded. Appendages of the sixth abdominal segment 

 sometimes with both rami expanded, sometimes with the inner 

 ramus lancet-shaped and the outer expanded. 



315. Callianassa, sp. 



I found a specimen of a species of Callianassa inhabiting a 

 hole among broken pieces of coral on Molle Island, Whitsunday 



