86 



A REVISION OF THE ASTACIDiE. 



nostrum without lateral teeth (ul least iii the adult). 



f Areola liucar in lljf middle. C. Mississippicnsut. 

 I Areola uol linear iu any part. C. mcdius, C. imm, 



Rostrum 

 with lat- 

 eral teeth. 



, ,. ... .,„ f nostrum and anteunal scales very louK. C. lancifcr. 



Areola liucar m the middle. < ^ a j 



I Rostrum and autenual scales of moderate length. G. I'ttlmeri. 



Areola of 

 moderate  

 width. 



' Rostrum with a median carina above. C. Atabdmciisis, C. comjirexsiis, C. proj)i>iqaus. 



' Sides of carapace armed with numerous spines. C. (iffiids. 



Rostrum but slightly cxcavaled, or sub-plane. 

 C. virilis, C.propiuqiius, var. obsciira, C. Sloiiidi. 



Margins of rostrum concave. 

 C. llarrisonii, 0. riisticiis, 

 C. forceps. 



Rostrum 

 not ea- -i Only oue lateral 



riuated. 



spme ou eara- 

 pace(sometimes 

 . obsolete). 



f 



Rostrum deeply 

 excavated, with 



raised margins. 



i\'Iargiiis of rosttum siraigiit. 

 C. propiiiquua, var. Hanboniii, 

 C. spiiwsus, C. Pulnami. 



35. Cambarus lancifer. 



Cambams lancifer, Hagen, 111. Cat. Mus. Comp. Zoiil., No. III. p. 59, PI. I. tigs. 8G, 87, PI. III. fig. 159, 



1S70. 

 Cumbariis lancifer, Faxon, Proe. Amer. Acad. Arts and Sci., XX. IIG, ISSi. 



The only specimen of this species known is Hagen's type from Root 

 Pond, Miss. I cannot find in what part of the State Root Pond is situated. 



36. Cambarus aflanis. 



? Aslacits li/nosiis, Ratinesque, Anicr. Monthly Mag. and Critieal Rev., II. '1-2, Nov. 1817. 



Aslacas affinis. Say, Jonru. Acad. Nat. Sci. Pliila., I. 1G8, Dec. 1817. 



Astacus affinis, Harlan, Medical and Physical llescarchcs, p. 230, tig. 2, 1S35. 



Aslacus Bartoirii, Milne Edwards, Histoire Naturelle des Cnistaces, II. 331, 1837. 



Astacus affinis, De Kay, Zoology of New York, Part VI. Crustacea, p. 23, ISil. (After Say.) 



? Aslacus (Cambarus) affinis, Eeicuson, Arch. f. Naturgeseh., Jahrg. XII., I. 96, 1840. 



Cambarus affinis, Gibard, Proe. Acad. Nat. Sci. Phila., VI. 87, 1852. (Young.) 



Cambarus Pealei, Gikard, Proe. Acad. Nat. Sci. Phila., VI. 87, IS52. (Adult.) 



Cambarus affinis, ILvGEN, 111. Cat. Mus. Comp. ZoOl., No. III. p. GO, PI. I. figs. 19-22, Si, 85, PI. III. fig. 



152, PL v., 1870. 

 Cambarus affinis, Abbott, Amer. Naturalist, VII. SO, 1S73. (Habits.) 

 Cambarus affinis. Smith, Rep. U. S. Comm. Fish and Fisheries for IS72 and 1873, p. C38, 1S74. (After 



Hagen and Abbott.) 

 Cambarus affinis, Faxon, Proe. Amer. Acad. Arts and Sei., XX. 145, 1S84. 



Knoivn Localities. — New York : Niagara. New Jersey : Schooley's Moun- 

 tain, Morris Co. ; Red Bank, Monmouth Co. (Coll. Acad. Nat. Sci. Phila.) ; 

 Trenton ; Burlington ; Camden Co. (Coll. Acad. Nat. Sci. Phila.). Pennsyl- 



* There is a variety of ('. imuuuiix with lateral rostral spines. Sec p. 99. 



