CRTTSTACEA. 209 



usual, nearly quadrate, with the anterior margin straight, and has 

 the next joint articulated with it at its antero-internal angle. The 

 chelipedes are subequal and moderately robust ; the merus or arm, 

 short, trigonous, its upper margin distally armed with three or four 

 teeth ; carpus or wrist very distinctly tuberculated on its upper and 

 outer surface; palm with only three or four tubercles appearing 

 through the pubescence at base ; fingers little shorter than the palm, 

 pubescent, except at and near the tips, which are acute, regularly 

 denticulated, and closing along their inner margins. The ambula- 

 tory legs are slender, rather long, and densely pubescent ; the merus- 

 joints have a tubercle at their distal, and the carpus-joints one at 

 their proximal ends. Colour cinereous grey. Length of the single 

 specimen examined (a female) about 3| lines (nearly 8 millim.), 

 breadth about 4| lines (nearly 10 miUim.). 



This specimen was dredged in the Arafura Sea, at a depth of 

 32-3& fms. (No. 160). 



In the structure of the antennee and orbits (see fig. b) this 

 species resembles Eusaanthus and JAagore, but the form of the 

 strongly tuberculated and densely hairy carapace seems to preclude 

 its being assigned to either of these genera. In these particulars and 

 in the slender ambulatory legs it more closely resembles Halimecle 

 fragifer, De Haan ; and I have accordingly assigned it to the genus 

 Halimede, although with some uncertainty, since De Haan in his 

 description does not say whether the basal antennal joint enters 

 within the inner orbital hiatus or is merely in contact with the sub- 

 frontal process ; if the latter, our new species will, I think, have to 

 be made the type of a new generic division. 



39. Actsea riippellii (Krauss). 



To this species must, 1 think, be referred a small and very hirsute 

 female from Port Molle, 14 fms. (No. 93), and a somewhat larger 

 female with very prominent and distinctly granulated areolae on 

 the carapace, obtained at Port Denison, 4 fms. (No. 122), first 

 collection ; also two small females from Thursday Island, 3-4 fms. 

 (No. 177), second collection. 



There are specimens in the British-Museum collection from the 

 Mauritius (Old Oollection) and Malaysian seas (coll. Dr. Sleeker); 

 perhaps also a specimen from Norfolk Island, 23 fms. {H.M.S. 

 'iTer-aZci'), belongs here. 



I have already, in my report on the late Dr. Bleeker's Malaysian 

 collection*, given the leading references to the synonyma of Aetma 

 rupjpellii. 



40. Actssa areolata, Dana ? 



To this species are very doubtfully referred several specimens of 

 both sexes from Port MoUe, obtained either on the beach (Nos. 95, 

 103) or at a depth of 14 fms. (No. 93). The largest example mea- 



* Ann. & Mag. Nat.- Hist. ser. 6, y. p. 232 (1880). 



p 



