CRUSTACEA. 55 



upper surface sharp and granular ; under surface thin and tuberculated ; inner surface concave, 

 with two finely granulated parallel lines ; outer surface convex, with two rows of holes, and 

 two series of tuberculated lines. 



Abdomen (of female) convex, wide, divided into about six pits by strong reticulations 

 formed of granuliferous lines. 



Hab. Straits of Sunda. 



3. IXA, Leach. 



1. IXA MEGASPIS, Adams Sf White. (Tab. XII. Fig. 1.) 



Thorace subgranuloso, canaliculis dorsaHbus angustis valde profundis, postice linea impressa profunda 

 transversa ; lateribus valde productis granulosis retrorsum inclinatis, finibus obtusis, dente terminali parvo 

 curto. 



Hab. Bomeonem. Insulas Philippinas. 



Carapace subgranular, the channelled grooves which separate the middle from the 

 lateral regions veiy deep and narrow, a deep transverse posterior groove, the lateral prolonga- 

 tions granular, inclined backwards, long and slender, the ends obtuse, and slightly curved 

 forwards, the stiliform tooth at their extremities very short and small. 



Hab. Borneo (Tampasook) ; Philippines (Bohol). 



The species, when alive, has the carapace of a light red colour, with dark crimson in the 

 middle, the lateral prolongations of the carapace being purple, with orange tips : the legs are 

 bright red. It differs from the Lva cylindrica in the lateral prolongations being inclined 

 backwards, more slender and longer, the ends more obtuse, and curving forwards, the 

 terminal spine is much shorter and smaller, the surface of the carapace is less granular, the 

 middle region is not so deeply notched on each side, the dorsal grooves are narrower and 

 deeper, and the hind groove is more transverse. 



4. HARROVIA, Adams 8f mite. 



Thorace subpentagono, dense tomentoso, Hneis duabus elevatis, tuberculisque quatuor obtusis ; margi- 

 nibus latero anterioribus dentibus tribus obtusis. 



Fronte valde recta in medio einarginata, angulo canthi externe prominente dentiformi. 



Chelis granulosis, brachio supra spinis duabus interne spina, duplicata, carpo tuberculo unico, manu 

 cylindricea sulcata, digito ad basin tuberculo parvo externe. 



Carapace subpentagonal, densely tomentose, with two transverse raised lines on the 

 upper surface, each ending externally in a prominent blunt tubercle, and two faintly-impressed 

 hnes posteriorly ; latero-anterior margins with three obtuse teeth, the anterior small and 

 rounded, the middle large and more prominent, and the posterior strong and conical. 



Front very straight, emarginate in the middle, the inner angle of the orbits forming a 

 strong tooth in the same line as the front. 



