CRUSTACEA. 47 



Thorax suborbicularis, postice coarctatus, margine latero-anteriore spinis acutis conicis prorsum 

 inclinatis. 



From semicircularis, in lobos quinque equales divisa ; canthi margine superiore subfisso postice, dente 

 magno, conico, curvato. 



Chela longa?, spiniferee, pedes posteriores graciles, corupressse, pari quinto valde dilatato. 



Abdomen (maris) triangulares articulis quinque ; femina adhuc latet. 



External pedipalps with the second joint rather more slender towards the tip (than in 

 Lupa forceps), the third joint considerably smaller. 



Carapace snborbicular, contracted posteriorly, latero-anterior margin with sharp conical 

 spines directed forwards. 



Front divided into five equal dentiform lobes, orbit with the upper margin slightly 

 notched, a large curved conical tooth behind it. 



Fore-legs long and spiniferous. 



Hind-legs slender and compressed, the fifth pair greatly dilated. 



Abdomen (of male) triangular, five-jointed. 



1. LUPOCYCLUS ROTUOT)ATUS, Adams 8f White. (Tab. XII. Fig. 4.) 



Thorace minutissime punctulato, tuberculis parvis aggregatis lineisque granulosis adsperso, margimbus 

 latero-anterioribus spinis quinque magnis, spinis quinque parvis interpositis ; regionibus lateralibus 

 pallidulo-luteOj corneo-fusco discoloratis ; in medio thoracis taenia lata rubra. 



Hab. Balambangan. 



Carapace subcircular, slightly narrowed behind, surface irregular, very finely punctulated, 

 and covered with isolated clusters of minute tubercles and transverse gramdated lines ; the 

 latero-anterior margin with five large, sharp, conical spines directed forwards, and an equal 

 number of small intermediate spines. 



Front semicircular, divided into five equal dentiform lobes ; orbit with a slight notch at 

 the upper margin, and bounded behind by a strong, curved, conical tooth, directed forwards. 



Fore-legs with the third joint furnished with a row of five sharp, curved, conical spines 

 on the anterior margin, numerous transverse ridges of small tubercles on the upper surface, 

 and a longitudinal granulated line ending externally in a sharp spine ; fourth joint with a 

 strong spine on the upper edge ; upper surface of fifth joint with a large spine at the base, 

 and two ridges each ending anteriorly in a prominent spine ; claws long, slender, grooved, 

 and slightly curved. 



Hind-legs slender, compressed, finely punctulated and granulated, the last pair with all 

 the joints horizontally flattened, the last and penultimate joint greatly dilated and fringed 

 with close-set stiff hairs. 



Abdomen (of male) triangular, five-jointed. 



Hab. Island of Balambangan, north end of Borneo. 



