220 



Stat. 47. Bay of Bima, north coast of Sumbawa. Depth 13—31 m. i cf. ' 9- 



Stat. 181. Ambon. Depth 54 m. 3 O (2 juv.). 



Stat. 285. South-east coast of Timor. Depth 34 m. i 9 with eggs. 



The carapace of this elegant species is smooth and glabrous; under strong magnification 

 here and there some punctae are seen; a cervical groove is present, concave forward, and at 

 either end some oblique depressions are found. The carapace is straight transversely, except 

 at the lateral branchial regions, which are strongly sloping, the hepatic regions are bulging, 

 and the anterior part of the carapace obliquely deflexed. 



The fronto-orbital distance occupies the greater part of the breadth of the carapace, as 

 the front alone at its practically straight, but very slightly convex, margin measures about one- 

 half of the said breadth, and the eye-stalks, which are bottle-shaped and provided with very 

 distinct eyes, perfectly visible in dorsal view, are elongate. Upper orbital margins transverse, 

 passing almost imperceptibly into the antero-lateral margins of the carapace, which are firstly 

 strongly divergent backward and carinate, but soon curve strongly backward, becoming more 

 and more obtuse and finally disappearing altogether when passing into the very slightly con- 

 vergent postero-lateral margins, which again turn outward above the bases of the middle pairs 

 of walking legs. Posterior margin of carapace sinuous, as long as the greatest breadth of the 

 carapace, which is lying at the end of the anterior third of the latter. 



Antennules folded quite transversely; antennae longer than orbits. Infra-orbital margin 

 somewhat wavy in its lateral part, beneath the pigmented part of the eye. Epistome distinct, 

 vertical. Lateral margins of buccal cavity convergent backward, anterior angles acute. Merus 

 of external maxillipeds subquadrate, antero-external angle not prominent, slightly rounded; 

 according to Milne-Edwards' figure and to the express statement of Alcock the merus should 

 be as long as the ischium, but in my specimens it is slightly shorter. 



The chelipeds are unequal in the cT (the right being the larger), but equal in the 9. 

 Meropodite with a transverse ridge near the distal end of the upper border, preceded by a 

 row of feathered hairs (in the 9 this transverse ridge is not observed in my specimens; both 

 Milne-Edw.\rds and Alcock state the presence of a subdistal prominence at the meropodite, 

 but the first author describes shortly the abdomen of the cf and figures that of the 9, though 

 he could examine only a single specimen, and the sex of Alcock's only individual is not noted). 

 Wrist with a pronounced inner angle, turned forward. Palm greatly compressed and carinate 

 below, like the fixed finger, rounded above; in the larger chela of the cT it is longer than the 

 fingers; both are entirely smooth and hairless. 



Walking legs long and slender, 2^ and 3'' pair equal, with elongate propodites and 

 dactyli, the latter not flattened, nearly straight, feebly curved towards the tip, those of last 

 pair entirely straight; some scattered hairs are found alono- the margins. 



x'Vbdomen of cT triangular; first segment covered beneath the carapace; third segment 

 broadened, with acute lateral angles, twice as long as preceding segment; thence the abdomen 

 rapidly but regularly tapers towards the triangular terminal segment. 



Milne-Edwards describes his specimen as being of a rosy colour with longitudinal and 

 oblique reddish stripes; my specimens are uniformly ivory-white. Notwithstanding some more 



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