EASTKRN PROVINCE INTERIOR REGION SPECIES. 343 



figured in L. & Fr.-W. Shells of K A., I, 258. The figure of geni- 

 talia given by Dr. Leidy on the plate referred to correctly represents 

 that of S. obliqua. 



The genital system is figured (under the name of S. ovalis) by Leidy, 

 I. c. The testicle is not separated into distinct fasciculi by the paren- 

 chyma of the liver, as in Helix, but forms a single mass ; the epididymis 

 is ver}^ much convoluted, and appears always to be distended with 

 spermatic matter; the prostate gland is usually short, occupying the 

 upper half only of the length of the oviduct, and is thick, clavate, and 

 more or less colored by pigmentum nigrum cells upon the surface ; the 

 penis sac is long, cylindroid, curved downward at its upper part, and 

 is joined at its summit by the vas deferens; the retractor muscle is in- 

 serted into the penis sac a short distance below its summit; the genital 

 bladder is large and globular; its duct is nearly as long as the oviduct, 

 and is narrow; the vagina is moderately long and muscular; the 

 cloaca is short. 



It will be interesting to study the genitalia of other species of the 

 genus in order to ascertain whether the peculiarities of the testicle be- 

 ing free and the prostate gland short are generic characters. In S. 

 campestris the same arrangement is found. 



DOUBTFUL AND SPURIOUS SPECIES OF SUCCINEA. 



Succinea jmtris, Lix. (Deshayes, Encyl. M^th., 21; De Kay, 1839,31; Ferussac, 

 Tabl. S.vst., 9), and 



Siiccinea ainjjhibia, Drap. (Forbes, Brit. Ass., 1837, 144; Ferussac, Tabl. Syst.; 

 BiNXEY, Teir. Moll., ii, 159 ; MRS. Sheppard, Tr. Lit. Hist. Soc. Quebec, 18:29, 

 i, 194), have been quoted from America. Having never seen a well-antlieu- 

 ticated s])ecimen of either, I omit them. 



Succiiiea vermeta, Say, New Harm., Diss., ii, 230 (1829) ; Desc, 23 (1840) ; ed. Binxey, 

 38 {S. vniusia, W. G. B., err. typ.). Gould quotes this in the synouomy of 

 S. avara. See Terr. Moll., ii, 64, 73, and above, p. 339. 



Succhiea aperta, Lea, Trans. Anier. Philo. Soc, vi, 101, pi. xxiii, lig. 101; Obs.,ii, 

 107 (1839), is said by Goui.D (Terr. Moll., ii, 67) to bo identical -pio. 371 a. 

 with S. rotundala, of Sandwich Islands. 



Succinea pdlucida, Lea (Proc. Acad. Nat. Sci. Phila., 1864, 109; Journ. 

 ot same ; Obs., xi, 134, pi. xxiv, fig. 106), appears to me to be 

 Limiiwa colvinclla. A figure of an authentic specimen re- 

 ceived from Mr. Lea is here given. 



Succinea uhlonna and pittris, credited to North America by Prestwich, 

 Quart. Journ. Geol. Soc, xxvii, 493. 



Succinea Haleana, Lea. Shell obliquely ovate, shining, somewhat transparent, thin, 

 golden color ; spire short ; sutures impressed ; whorls 3, con- j.^^ g^2. 

 vex; aperture large, l)roadly oval; outer lip regularly ex- ^ 



pauded; coUimella incurved. Diameter, .17™"'; length, .23 ^^ 



inch. Alexandria, La. (Lea.) ^ffl 



Succinea Uahana. Li:a, Proc Acad. Nat. Sci. Philad., 1864, 109 — 

 Tkyon, Am. Journ. Conch., ii, 241 (1866). 



