86 A REVISION OF THE ASTACIDA. 
; ; ( Areola linear in the middle. C. Mississippiensis. ' 
Rostrum without lateral teeth (at least in the adult). 4 ; } pe = 
( Areola not linear in any part. C. medius, C. immunis.* 
- 
* 
Agcolabin tec aie aoa fs and antennal scales very long. C. daneifer. ae 
Rostrum and antennal scales of moderate length. C. Palneri. 9 
Rostrum 
with lat- 
eral teeth. | Areola of 
moderate Rostrum but slightly excavated, or sub-plane._ 
. . . ‘ ap - ‘ i, 
Rostrum with a median carina above. C. dlabamensis,”C. compressus, C. propinguus:! 
x 
. . ar . ry we 
( Sides of carapace armed with numerous spines. C. affinis. 
3 str ee eeiler E “ Sees 
width. Rostrum C. virilis, C. propinquas;-vex obscura, C. Sloanit. 
not ca- { Only one lateral = po 
rinated, spine on cara- Margins of rostrum concave. | 3 
. Y 797 0 2  yyetipys 
pace (sometimes Retin eens C. Harrisonii,” C. rusticus, 
Jinn. Glee a ARTEL 
obsolete). ‘ “|G: forceps. 
excavated, with - ; ; i 
raised margins. Margins. of rostrum straight. 
C. propinguus, var. Sanbornii 
propinguus, : 
: ee ae es 
C. spinosus, C. Putnami. 
~ * \ ii oie 
Cd f 
> v 
f 
j meh s £00010 8 
Cambarus lancifer. Neterea nana 
7 Jongh an, 
Cambarus lancifer, Hacen, Ill. Cat. Mus. Comp. Zodl., No. IIL. p. 59, Pl. I. figs. 86, 87, Pl. ILI. fig. 159, ~° 
1870. 
° cae . 
Cambarus lancifer, Faxon, Proc. Amer. Acad. Arts and Sci., XX. 146, 1884, 
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 affinis. 
? Astacus limosus, Rarryesqur, Amer. Monthly Mag. and Critical Rev., IT. 42, Nov. 1817. 
Astacus affinis, Say, Journ. Acad. Nat. Sci. Phila., I. 168, Dec. 1817. 
Astacus affinis, Haran, Medical and Physical Researches, p. 230, fig. 2, 1835. 
Astacus Bartonii, Mitnr Epwarps, Histoire Naturelle des Crustacés, IT. 331, 1837. 
Astacus afinis, De Kay, Lodlogy of New York, Part VI. Crustacea, p. 28, 1844. (After Say.) 
? Astacus (Cambarus) afinis, Uricuson, Arch. f. Naturgesch., Jahrg. XII., I. 96, 1846. 
Cambarus affinis, GiRaRD, Proc. Acad. Nat. Sci. Phila., VI. 87, 1852. (Young.) 
Cambarus Pealei, Grrarp, Proc. Acad. Nat. Sci. Phila, VI. 87, 1852. (Adult.) 
Cambarus affinis, Hacen, Ill. Cat. Mus. Comp. Zodl., No. IIL. p. 60, Pl. I. figs. 19-22, 84, 85, Pl. IIT. fig. 
152, Pl. V., 1870. 
Canbarus uffinis, Apnorr, Amer. Naturalist, VII. 80, 1873. (Habits.) 
Cambarus affinis, Smvvu, Rep. U. 8. Comm. Fish and Fisheries for 1872 and 1873, p. 638, 1874. (After 
Hagen and Abbott.) 
Jambarus afinis, Faxon, Proc. Amer. Acad. Arts and Sci., XX. 146, 1884. 
Known 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 C. zamunis with lateral rostral spines. See p. 99. 
