CRUSTACEA. 27 



Carapace longer than wide, five-sided, rather produced and acuminated in front. 

 Upper surface with four elevated spines, rather thickened and blunt at the ends, the first 

 about midway between the fore and hind part of carapace, directed upwards and slightly 

 backwards ; behind it, another spine much longer, and one on each side of this, on the hind 

 margin of carapace ; in the middle, two spines directed backwards and slightly upwards ; the 

 first and second spines from before backwards, moderate in length ; the third placed in the 

 centre of the carapace, long, vertical, and rather sharp-pointed ; the spines situated in the 

 raised prominent tuberosity of the branchial region, long, stout, erect, and directed a little 

 outwards and backwards ; entire surface of the carapace covered with blunt, subcorneal 

 tubercles. Breadth of carapace about four lines ; length about four lines and a half. 



Front small, depressed very considerably, rather short, somewhat obtuse, deeply con- 

 cave in the middle, with a slight tooth on each side. 



Fore-legs very long in comparison with the size of the body, verrucose or covered with 

 warty tubercles, which latter are smooth, rounded on the sides, and more spinous on the 

 angular crests. 



Hind-legs very slender and smooth, rounded above and below, with the claws long, fine, 

 slightly flattened, and very sharp. 



Hab. Philippine Islands. 



This species comes very near Lambrus lamellifrons (Adams & White), but the legs are 

 smooth, and not spiny like those of the latter, which, moreover, has tubercles on the carapace, 

 instead of long, erect spines. 



4. LAMBRUS CARINATUS, Milne-Edwards. (Tab. V. Kg. 3.) 



Latero-posterioribus marginibus thoracis ad utrumque latus duobus parvis dentibus armatis et validis- 

 sinio triangulari dente quo margo latero-anterior desinit. Superiore superficie chelarum Isevi et margi- 

 nata dentibus nullum inter se intervallum habentibus. 



Thorace admodum insequali, ad regiones branchiales carinato, et tribus dentibus crista? forma in linea 

 intermedia armato. 



Fronte magna, triangulari, non denticulata ; latero-anterioribus marginibus minutim denticulatis ; 

 brachio quatuor posteriorum pedum spinoso. 



Longitudine 8 hnearum. 



Hab . Oram Brunensem, (Mare Sinense.) 



Latero-posterior edges of the carapace armed on each side with two small teeth, and 

 with a very strong triangular tooth, similar to that which terminates the latero-anterior edge. 

 Upper surface of the fore-legs smooth, and bordered by close-set teeth. Carapace very 

 unequal, carinated on the branchial regions, and armed with three teeth in the form of a 

 crest in the median line ; front large, triangular, and not denticulated, latero-anterior 

 margins finely denticulated. Third joint of the four hind pahs of legs spiny. Length 

 eight lines. 



Hab. Coast of Borneo ; China Sea. 

 Lambrus carinatus, Edw. Crust. 1. 358. 



