CKUSTACEA. 57 



stouter condition of the prehensile and ambulatory feet ; and in the well-marked peculiarity 

 of the front. 



6. IPHICULUS, Adams 8f White. 



Thorax sublatior quam longior, denso tomento spongioso obsitus; marginibus latero-anterioribus 

 spinis quatuor fimbriatis ; marginibus latero-posterioribus tuberculis duobus obtusis, parte coarctata lineis 

 impressis duabus longitudinalibus, et sulco transverso, postice tuberculo subelevatiusculo. 



From tuberculis duobus depressis, fissa separatis. 



Chela, manu gibbosa, digitis perlongis, gracikbus, multis denticulis longis instructis. 



Abdomen (maris) ad articulum basalem fovea profunda sublongitudinali. 



Carapace rather wider than long, covered with a dense woolly tomentum, resembling 

 fine sponge ; latero-anterior margins with four fringed spines, increasing in size from the front 

 backwards, the fourth spine, forming the latero-anterior angle, being very strong and prominent ; 

 latero-posterior margins with two obtuse tubercles, separated by a sinus ; the coarctate portion 

 of carapace marked by two longitudinal and one transverse groove, and ending in a rounded 

 slightly-elevated tubercle. 



Front consisting of two very short depressed tubercles, separated by a notch, each 

 tubercle rounded in front ; mouth extending beyond the front. 



Fore-legs with the fifth joint gibbous ; the claws very long and slender, with numerous 

 fine long sharp teeth. 



Abdomen (of male) with its basial joint with a deep sublongitudinal fovea. 



1. IPHICULUS SPONGIOSUM Adams 8f White. 



Thorace fusco, tomento denso spongioso obtecto ; lateribus, anteriore spinis quatuor fimbriatis, pos- 

 teriore tubercuks duobus. 



Hab. Insulas Philippinas. 



Carapace brown, covered with a thick sponge-like woolly tomentum ; sides with four 

 fringed spines anteriorly, and two tubercles posteriorly. 

 Hab. Philippine Islands. 



This genus should properly follow Ceratocarcinus, with which it is closely allied, and 

 should be placed in the same group as that Crustacean ; it appears, among the Fartkenopidee, 

 to hold the same place as Oreophorus does among the Leucosidce. 



7. TLOS, Adams Sf White. 



Thorax latior quam longior lsevis ; regionibus lateralibus valde excavatis, marginibus lateralibus trilo- 

 batis, margine posteriore escavato, lolia bicarinata ; multis tuberculis parvis ad basin circumdatis. 

 From integra rotundata deorsum retlexa. 



Chela branchio triangulares carpo supra bicarinato, manu carina tuberculifera, digitis ad fines curvatis. 

 Abdomen (feminae) articulis septem, ovale tuberculosum. 



Q 



