GRAPSOIDEA. 367 



short. The legs are naked, or nearly so, and the tarsus quite un- 

 armed. The body is rather thick, on either side as well as at middle, 

 but has the lateral margin acute, and forming a kind of border. 

 The male abdomen has seven distinct segments. 



HELICE CRASSA. 



Carapax subquadratus, margine laterali antics bi-emarginato, fronte 

 dimidii latitudinis carapacis longiludine. Manus brevis et lata, superne' 

 subcarinata; extus fere Icevis, minutd granulata. Articulus pedum 

 scquentium ?>tius supra subacutus. Regio pterygostomiana granulata, 

 leviter pubescens. 



Carapax subquadrate, lateral margin with two emarginations ante- 

 riorly, front half as long as breadth of carapax. Hand short and 

 broad (or high), above subcarinate, externally nearly smooth, 

 minutely granulate. Third joint of following feet subacute above. 

 Pterygostomian region granulate, thin pubescent. 



Plate 23, fig. 8 a, animal, enlarged two diameters ; b, outer maxil- 

 lipeds, enlarged four diameters; c, hand, enlarged two diameters; d, 

 abdomen of male, ibid. 



Shores of Illawarra, New South Wales. 



Length of carapax, five and a half lines ; breadth, six and one- 

 fourth lines ; ratio of length to breadth, 1 : 1-13. The upper margin of 

 the orbit is somewhat oblique backward and outward instead of trans- 

 verse. The surface of the carapax is naked, but hardly shining, and 

 somewhat uneven. Posterior to the hinder tooth there is a slightly 

 raised oblique line on the surface of the carapax. The front meets 

 the antenuary septum at its middle, and the fossettes either side are 

 triangular in outline. The pterygostome has a smooth channel 

 parallel with the sides of the buccal area, a short distance from it, and 

 also another passing backward parallel nearly with the lower margin 

 of the orbit. The lower orbital margin is minutely crenulate. The 

 surface above the legs as well as the pterygostome is throughout granu- 



