AUSTRALIAN MAIACOSTKACA. 119 



Carapace orbicular, smooth, ornamented with reticulated green 

 lines ; front very short, entire ; thoracic sinus short, not defined ; 

 hepatic region with a few red granules. 



Shark's Bay (Brit. Mus.) ; Port Darwin (Macleay Museum). 



221. Leucosia Perryi. 



Leucosia Perryi, Miers, 1. c, p. 238, pi. xxxviii., figs. 19-21 ; 

 Haswell, 1. c, p. 46. 



Carapace sub-depressed; front tridentate; thoracic sinus 

 absent ; arms densely tuberculate at base ; hand and carpus 

 smooth. 



Shark's Bay (Brit. Museum). 



222. Leucosia putaescens. 



Leucosia pubescens, Miers, 1. c, p. 238, pi. xxxviii., figs. 19-21 ; 

 Haswell, 1. c, p. 46. 



Carapace convex, smooth ; hepatic regions concave, smooth ; 

 front tridentate, even above ; thoracic sinus with the anterior 

 margin smooth, not defined, pubescent ; arms pubescent above. 



Shark's Bay (Brit. Museum). 



223. Leucosia pulcherrima. A.M. 

 Leucosia pulcherrima, Miers, 1. c, p. 236, pi. xxxviii., figs. 4-5 ; 



Haswell, 1. c, p. 46. 



Carapace smooth, convex, sparsely punctate in front, orna- 

 mented in front with two coalescent trefoil-like, and behind with 

 two separate circular, linear red markings ; thoracic sinus deep, 

 narrow, well-defined in front ; carpus and hand smooth. 



Lizard Island (Brit. Museum) ; Port Denison (Australian 

 Museum). 



224. Leucosia splendida. A.M. 



Leucosia splendida, Haswell, 1. c, p. 47, pi. v., fig. 1. 



Carapace smooth, convex, sparsely punctate anteriorly ; orna- 

 mented with two trefoil-like figures which do not coalesce at any 

 point, and with two circular figures behind; hand with an 

 inconspicuous row of tubercles ; thoracic sinus deep, narrow, 

 well-defined in front. 



Port Jackson. 



