92 
smallest ; three hinder pair simple, furnished with sim- 
ple claws. 
External double palpi with the last joint of the internal 
footstalk acuminated, and shorter than the joint preced- 
ing 1t. 
Tas. XCII. PALASMON CARCINUS. 
P. rostro serrato decendente apice recurvo; pedibus pari 
secundo spinuloso digitis interne unispinosis. 
Astacus fluviatilis major, chelis aculeatis. Sloan. Jam. 2, 
971, ti 246, f, Ze 
Cancer carcinus. Linn. Syst. Nat. 1, 1051, 64. 
Cancer (astacus) Jamaicensis. Herbst.2, 57, tab. XXVil. i 2. 
Palemon carcinus. Fabr. Supl. Ent. Syst.402, 1. ~ 
Latr. Hist. Nat. des r phen et des “i 
sect. 6, 260, 10. 
Habitat in insule Jamaica fluviis. 
JAMAICA PRAWN. as 
Rostrum descending serrated, the apex recurved: second 
pair of legs spinulose, the fingers internally, with one 
spine. 
Palemon carcinus inhabits the rivers of Jamaica, and is 
said by Sloane to grow to double the size of that figured in 
the annexed plate. 
Linné says, that Gronovius has considered it as a variety 
of his Cancer Squilla ; but it is not even mentioned by that 
author: he also refers to a figure in Rumph’s Amboina, 
which evidently is intended to represent another animal. 
Herbst also refers this species to Gronoyvius, (Zooph. 
987). 
