00 AUSTRALIAN MALACOSTRACA. 



Ambulatory legs compressed. Abdomen of the male composed 

 of seven joints. [A. M.-JE.] 



This genus occupies an intermediate position between the 

 Ocypodince and the Plagusiince. 



1G9. Orossonotus compressipes. 



Crossonotus compressipes, A. M.-Edw., Journ. . des Mus. 

 Grodeffroy, Band, i., Heft, iv., p. 83 ; ]S"ouv. Arch, du Mus., t. ix., 

 p. 283, pi. xiv., fig. 1. 



Carapace with a few bosses on the gastric, cardiac, and the 

 posterior portion of the branchial regions. Front prominent, 

 lamellar, and divided into four rounded teeth, the median scarcely 

 passing beyond the lateral. Lateral borders perfectly continuous 

 with the posterior border ; these borders are armed with 10 to 12 

 teeth on each side, and to 8 behind. Internal orbital lobe very 

 large, divided into three rounded teeth ; inferior orbital border 

 denticulated. Chelipedes of the female very slender ; those of 

 the male unequal, the larger one with the arm and wrist narrow ; 

 hand very high and smooth, ornamented internally near the 

 fingers with long hairs; fingers short and thick. Ambulatory 

 limbs large ; merus denticulated on the borders and granular 

 externally ; daetylus broad, short, and compressed, with two 

 sharp teeth below, and bordered above with hairs. [A. AT-.E.] 



Darnley Island, Torres Straits (Macleay Museum). Found 

 originally in Samoa, and afterwards in Xew Caledonia. 



Fa m ily GBAPSIDsE. 



Carapace sub-quadrate, usually deflexed, with the sides straight 

 or arcuate. Eyes shorter than one-third the width of the 

 carapace. Internal antenna; transversely plicate. Fourth joint 

 of the external maxillipedes articulated with the third joint at 

 its summit, or at its antero-external angle. Second joint of the 

 abdomen of the male nearly equalling in width the adjoining 

 part of the sternum. 



Snb-Faniili/ Grapsince. 



Internal antennae concealed by the front. Third joint of the 

 external maxillipedes not crossed by an oblique piliferous crest 

 (body usually depressed). [Z).] 



