BY W. A. HASWELL, M.A., B.Sc. 757 



14. Droniia conchifera, sp. n. 



Carapace longer than broad, nearly flat above, very slightly 

 convex. Lateral borders entire with the exception of a small 

 tooth situated some distance in front of the transverse groove, 

 and separating a convex antero-lateral portion from a longer 

 postero-lateral portion, which is slightly concave in front and 

 slightly convex posteriorly. Front tridentate, bordered with 

 minute granules, the mesial tooth excessively minute, the lateral 

 teeth dorso-ventrally compressed, triangular, acute ; well 

 developed supra-orbital and infra-orbital teeth. Under surface 

 of the body and limbs rather closely covered with granules. 

 Carpus of chelipedes with a prominent conical projection on its 

 outer surface, and a smaller one internal to the first ; hand 

 ornamented with longitudinal rows of granules, two rounded 

 tubercles above the insertion of the dactylus. Carpus of ambu- 

 latory limbs, except the last, each with a small conical tooth ; 

 fourth pair shorter than the third, but very stout, the carpus 

 broad and thick with a deeply excavated " palm," bounded by a 

 stout conical tooth set a right angles to the axis of the joint ; 

 dactylus very powerful, strongly curved, rather longer than the 

 propodos. Whole surface covered with a short close green 

 pubescence ; dactyli and granules tinged with crimson. Length 

 fi in. ; breadth § in. 



Port Denison, five fathoms ; Port Molle, fifteen fathoms. 



This species has the curious habit of protecting itself with the 

 valve of a lamellibranch, which it holds tight over its back by 

 means of its unusually powerful and specially adapted fourth 

 pair of ambulatory legs. 



15. Petrolisthes inermis, sp. n. 



Carapace longer than broad, rather flat above, obscurely 

 lineolate behind and at the sides. Front rather prominent} 

 triangular, with a deep longitudinal mesial furrow. Anterior 



