No. ofSp. 



11 



LIMN^EA. 63 



Locality. i From whom received. 



30 m. w. of Ft. Kearuey. 



Liiiunaea lilimilis, Say. — Sliell ovate-conic, thin, translucent, 

 with sligfct wrinkles ; volutions nearly six, convex, terminal one very 

 minute ; suture well indented ; aperture about equal in length to the spire ; 

 lainum with au obvious plate of caloareou.s deposit ; a distinct 

 and rather open umbilical aperture ; color pale reddish-white or Fig. 99. 

 yellowish-white. Total length seven-twentieths inch. a 



Inhabits South Carolina. (fcA 



Of a dozen specimens sent me by Mr. Elliott, none exceeded ^/^ j 

 the limit here assigned to the species. It differs mucli from any 

 other species I have seen ; a variety of it, sometimes quite black, . .,. 

 was found by Dr. McEuen, at Oswego, on the Susquehanna. It 

 may be useful here to remark that,, in consequence of a typographical 

 error in the first part of the second volume of this work, the species above 

 described may be confounded with the desidiosus. The length of that shell 

 is erroneously stated to be seven-twentieths of an inch, instead of seveu- 

 tenths, its true length. {Say.) 



Limnaea kumilis, Say, Journ. A. N. S. II, 378 (1822) ; Binkey's ed. 110. 

 — Haldeman, Mon.. 41, pi. xiii, f. 1-8 (1842).— DeKay, N. Y. Moll. 

 71, pi. iv, f. 71 (1843). 



Limnieus modicella, Say, J. A. N. Sc. V, 122 (1825) ; Binney's ed. 113. — 

 Gould, Iuv. of Mass. 218, f. 151 (1841). 



Limnasa linsleyi, DeKay, N. Y. Moll. 72, pi. iv, f. 74 (1843). — Lissley, 

 Shells of Conn. Am. Journ. Sc. [i], XLVIII, 282 (1845). 



Linnifra parva, Lea, Proc. Am. Phil. Soc. 11,33 (1841) ; Tr. IX, 11(1844) ; 

 Obs. IV, 11. 



Limnsea plica. Lea, Proc. Am. Phil. Soc. II, 33 (1841) ; Tr. IX, 10 ; Obs. 

 IX, 10 (1844). 



Limnsea griffitliiaim, Lea, I. c, II, 33 (1841) ; IX, 8 (1844) ; Obs. IV, 8. 



Limnxa planulatn, Lea, /. c, II, 33 (1841) ; IX, 9 (1844) ; Obs. IV, 9. 



Limnsea nistica, Lea, I. c, II, 33 (1841) ; IX, 10 (1844) ; Obs. IV, 10. " 



Limnwa exigua, Lea, /. c, II, 33 (1841) ; IX, 9 (1844) ; Obs. IX, 10. 



Limnaea curta, Lea, I. c, II, 33 (1841) ; IX, 11 (1844) ; Obs. IV, 11. 



Ranges from Maine to Georgia, and from Kansas to Lake 

 Superior. 



Fig. 99 is drawn from an authentic specimen in the collection 

 of the Philadelphia Academy. 



Haldeman places L. modicella in the synonymy of L. humilis. 

 I have given below the original description and a figure (Fig. 

 100) of au authentic specimen, also from the Philadelphia 

 Academy 



