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Preliminary Catalogue of the Crayfishes of Kansas. 

 By Walter Faxon, A. B., Sc. I). 



1. Cambams simulans Faxon. — Proc. Amer. Acad. Arts and Sci.. XX. 

 112, 1884 —Mem. Mus. Comp. Zool., Vol. X., No. 4, p. 48, PI. I., fig. 12 ; 

 PL VIII., figs. 3, 3', 3a, 3a', 1885. 



Tributary of Medicine Biver, Barber Co. Messrs. Williams and Cragin. 

 Fort Hays (Coll. Mus. Comp. Zool.). 



2. Cambams gracilis Bundy. — Bull. 111. Mus. Nat. Hist., No. I., p. 5, 

 1876 —Trans. Wis. Acad. Sci., V. 182, 1882.— Geol. Wis., Surv. of 1873- 

 79, I. 403, 1883. Faxon, Mem. Mus. Comp. Zool.. Vol. X.. No. 4, p. 56, 

 PL VIII., figs. 4, 4', 4", 1885. 



Labette Co, W. S. Newlon. 



3. Cambarus IMogenes Uirard. — Proc. Acad. Nat. Sci. Phila., VI. 88, 

 1852. Cambarus obesus Hagen, 111. Cat, Mus. Comp. Zool., No. III., p. 81, 

 PL I., figs. 39-42; PI. III., fig. 163 ; PL IX., 1870. 



Leavenwortb (Coll. Mus. Comp. Zool.). 



4. Cambarus immunis Hagen. — 111. Cat. Mus. Comp. Zool., No. III.. 

 p. 71, figs. 101, 102 ; PL III., fig. 160 ; PI. VIII., fig. 6, 1870. Cambarm 

 signifer Herrick, Tenth Ann. Bep. Geol. Nat. Hist. Surv. Minn, for 1881, 

 p. 253,1882. 



Leavenwortb (Coll. Acad. Nat, Sci. Phila.). Ellis (Coll. C H. Gilbert). 



4a. Cambarus immunis Hagen, var. spinirostris Faxon. — Proc. Amer. 

 Acad. Arts and Sci., XX. 146, 1884.— Mem. Mus. Comp. Zool., Vol. X.. 

 No. 4, p. 100, PI. I., fig. 5,1885. 



Ward's Creek, Shawnee Co. ; F. W. Cragin and J. B. Fields. When I 

 described this variety in 1884, I had not seen the first form of the male, 

 which is included among the specimens collected by Messrs. Cragin and 

 Fields. The lateral spines of the rostrum are distinct as in the second- 

 form male and in the female; the set* on the second pair of legs are well 

 developed: the first abdominal appendages are shaped exactly as in the first- 

 form male of the typical C. immunis. 



5. Cambarus Bfals. sp. now — Male, form I. — Bostrum long, concave 

 above, lateral margins converging from the base to the lateral spines, which 

 are small but distinct; acumen of moderate length, acute. Post-orbital 

 ridges provided with a minute anterior spine. Carapace smooth and light- 

 ly punctate above, granulate on the sides ; lateral spine small, acute; cervi- 

 cal groove sinuate, ending anteriorly in a small branchiostegian spine; sub- 

 orbital angle not prominent; areola very narrow, punctate, the margins 

 parallel from the anterior to the posterior triangular fields ; the length of 

 the areola is etjual to one-half the distance from the tip of the rostrum to 

 the cervical groove. Abdomen as long as the cephalothorax. Proximal 

 segment of the telson' bispinose on each side, distal segment shorter than 

 the proximal. Antenna; longer than the body; lamina; a little longer 



