C A R I D E A. 



581 



The mandible has the lateral process a regular molar in form, with 

 several prominences, nearly as in Palaemon. The terminal process is 

 tridentate. Basal scale of the outer antennae quite narrow. Eye 

 rather short, as in Palaemon. Palpus of outer maxillipeds reaches 

 not quite to middle of penult joint. Two very long spines to extre- 

 mity of caudal segment. Carpus of leg of second pair half as long as 

 hand. 



Anchistia aurantiaca. 



Corpus vix depressum. Rostrum angustum, integrum, basis antennarwn 

 internarum longitudine, squama externarum paulo hrevius. Pedes 

 antici superficie inarms interna prope basin densd laxeque pubescentes. 

 Pedes 2di graciles, manu parce crassiore quam carpus, fere lineari, 

 digitis dimidio mantis multo brevioribus, parce pubescentlbus, angustis. 



Body hardly at all depressed. Beak narrow, entire, as long as base 

 of inner antennae, a little shorter than basal * scale of outer pair. 

 Anterior feet with dense short pubescence on inner side of hand near 

 base. Second feet narrow, hand hardly broader than carpus, 

 almost linear, fingers rather more than one-third the length of 

 hand, sparingly pubescent, narrow. 



Plate 38, fig. 2 a, animal, enlarged six diameters; b, first abdominal 

 appendage ; c, second ditto"; d, part of caudal segment. 



Pacific, among corals of Viti Lebu, Feejees. 



Length, half an inch. Colour, light vermilion spotted with yellow. 

 Carapax and body elongate, hardly depressed. Anterior angles 

 scarcely prominent. Last segment of abdomen slightly shorter than 

 caudal lamellae, a little hairy at tip, with two short spines. Hands 

 of first pair of legs with a little pubescence at tips. Carpus without 

 spines or teeth. Last six legs of thorax rather longer^ claw nearly 

 straight and slender; second pair of abdominal legs, with a narrow 

 accessory branch, in addition to the usual pair; third, fourth, and 

 fifth pairs similar, except that the accessory branch becomes smaller, 



and the whole organ is shorter. 



146 



