48 ASTACIDiE. 



Long. coqi. 3.8 ; antenn. 3.5 ; ped. antic. 3.2. 



Patria : Mobile, Alabama ; Pensacola, Florida- ; Beaufort, North 

 Carolina ; Milledgeville, Georgia ; Root Pond, Mississippi ; vidi 30 spe- 

 cimina. 



I had previously considered this species as C. angusiatiis LeConte ; but 

 the type in the Philadelphia Museum is surely different (viz. C. .spicii- 

 lifcr). This species is separated from the similar ones by the short 

 mesothorax, the longer abdomen, and the long, small, and nearly cylin- 

 drical hands. 



I consider A. Blandingii LeConte, 1. c. T. 7, p. 400, as probably identi- 

 cal with C. Lecontci The words " linea ordinaria non sulcata " do not 

 agree very well ; the transverse line is as sulcated as in C. tro(jlod//tcs. 

 The lamina of the postabdomen is bispinose in Mr. LeConte's sjDecies, 

 trispinose in C. Lecontci. Still it seems probable that the two species 

 are as likely to be identical with each other as with C. Blandingii 

 Harlan. 



Cat. No. 201 and 217, Mobile, Ala., L. Agassiz. Male Form L and IL 

 Fern. Spec. 12.* 



Cat. No. 1824, Beaufort, N. C, Mr. T. Shute. Fem. Spec. 1. 



Cat. No. 24G, Milledgeville, Ga. Fem., and young. Spec. 4. 



Cat. No. 307, Root Pond, Miss., Mr. Wailes. Male Form II. Spec. 1. 



Cat. No. 249, Pensacola, Fla. Male, Fem., young. Spec. 3. 



7. Cambarus spiculifer LeConte. '~«^ 



Aslacus spicidifer LeConte, Proc. Acad Philad., T. 7, p. 401. 



Figures on PI. I. and III. 

 First abdominal legs of the male : 



first form, fig. 59 in front ; fig. 60 outside. 



second form, fig. Gl in front; fig. 52 outside. 

 Antennal lamina, fig. 147, a ; cpistonia, h ; spine of the second joint of the exterior antenna, c. 



Mas. Ro.stro longo, lajvi, excavato, basi obsolete imprcsso, margini- 

 bus punctato-ciliatis, basi parallelis, delude subconvergentibus ; acumine 

 longo, angusto, triangulari, acuto, utrinque spina breviori acuta ; cretis 

 validis, modice elevatis, parallelis, extus obsolete sulcatis, apice brevi- 

 ter acutis, postice obsolete inflatis, convergentibus. Antennis validis, 

 corpore paululum brevioribus, articulis duobus basalibus dente externo 

 acuto ; antennis internis articulo basali dente medio infero acuto ; 

 lamina rostro fere longiori, medio latiori, apice angusta, margine ex- 

 terno latius inflato, spina modica acuta apicali. Epistomate lato, antice 

 triangulari, angulis lateralibus rotundatis ; pedibus maxillaribus ex- 

 ternis intus barbatis. Thorace levitcr ovato, punctato, lateribus leviter 

 granulatis, vel partim tuberculosis ; cephalothorace postice obsolete 

 bicalloso ; linea profunda, lateribus fissa, utrinque spinis duabus validis 

 acutis ; spina antica infera breviori ad antennarum basin ; areola lata. 



