286 MR. BELL, HOR^ CARCINOLOGICvE ; 



lated, latero-anterior portion slightly waved, posterior margin a little projecting. Thoracic 

 sinus deep, very narrow, terminating anteriorly in a narrow double notch, which is fur- 

 nished beneath with a few large granulations. External pedipalps in the male quite 

 smooth ; in the female the stalk has the basal half much raised ; the inner edge hairy. 

 Anterior legs rather longer than the carapace ; the arm granulated above, excepting the 

 anterior tubercle ; wi'ist smooth ; hand longer than broad, carinated on each side, wholly 

 without granulations, fingers meeting only at the points, without teeth or tubercles, the 

 fifth pair with the penultimate joint as broad as it is long. Abdomen in the male with 

 two rounded smooth elevations at the base, narrowest towards the centre ; in the female 

 broad oval, widened towards the anterior part. 



Length of the carapace 0-9 in. 



Colour rich brown above, the two posterior spots darker ; light brown beneath. 



Seve;ral specimens in the British Museum and in my own collection were brought from 

 the Philippiues by Mr. Cuming. 



Leucosia marmorea, mihi (Tab. XXX. fig. 4). Testa longiore quam latiore, maculis sex 

 albidis ; sinu thoracico antice brevi, linea semicirculari granulata terminato ; fronte 

 minute tridentato, dente medio longiore ; brachtis ad basin et ad latera tuberculatis ; 

 manibus margine interno granulato, externo rotundato. 



Hab. ad insulas Philippinas. Mus. Brit. 



Carapace longer than broad by the whole length of the front, somewhat narrowed for- 

 wards, the latero-anterior margin nearly straight ; hepatic region mth a slight elevation ; 

 thoracic sinus deep, extending forwards very little in advance of the insertion of the ante- 

 rior feet, and bounded by a semicircular granulated margin. Marginal granulations of 

 the carapace extremely small and not contiguous at the anterior part, gradually enlarging 

 and becoming flattened backwards. Eront minutely tridentate, the middle tooth the 

 longest. External foot-jaws smooth, polished, with a line of minute impressed dots near 

 the margin. Anterior legs robust ; arm on the upper side with a line of large granulations 

 on the outer and inner margins, a few on the proximal portion, and two or tlu'ee only 

 extending forwards, the rest of the upper surface smooth ; the under side mth a line of 

 similar granulations on the inner margin. Wrist smooth, rotmded, with a line of minute 

 granulations on the inner side ; hand rather longer than broad, somewhat tumid in the 

 middle, flattened towards the edges, the inner edge with a line of small granulations, the 

 outer smooth and rounded; fingers meeting only at their points, armed with distant 

 tubercles, and having a wide space near the joint. Abdomen (male) broad at the base, 

 then with the sides parallel, the penultimate segment rounded at the anterior margin, and 

 armed with a strong straight pointed tooth. 



Colour rich yellowish-brown. 



Length of carapace 1-4 in. 



Leucosia punctata, mihi (Tab. XXX. fig. 5). Testa impresso-punctata, fi-onte pro- 



ducto, subemarginato ; brachiis supra omnino granulatis. 

 Hab. in Mari Indico. Mus. Brit. 



