PUPOIDES. Ill 



1. PUPOIDES MARGINATUS (Say). PL 12, figs. 1 to 7. 



The shell is minutely perforate, rimate, slowly tapering 

 from the last whorl to the obtuse summit, cinnamon or slightly 

 darker, paler behind the lip, somewhat glossy. Surface 

 lightly marked with striae of growth, wanting on the first 

 whorl, which is weakly, microscopically grauose. The whorls 

 are rather strongly convex, the last half- whorl somewhat com- 

 pressed laterally, tapering to the narrowly rounded base. 

 The aperture is oval; peristome expanded and reflected, 

 strongly thickened within, its face flattened; the outer lip is 

 more strongly arched near the upper insertion, its internal 

 callus excavated and narrower there. The columellar margin 

 is straightened, dilated and reflected. Parietal callus rather 

 strong but transparent, bearing a short angular tubercle con- 

 nected with the outer lip.. Length 5, diam. 2.2 mm. ; barely 

 6 whorls. 



Eastern North America from Ontario and Maine to the 

 Gulf of Mexico, west to the Dakotas, Colorado, and western 

 Arizona (Yurna Co.) ; in northeastern Mexico at Monterey 

 and Tampico. Cuba: El Vedado and Morro Castle, near 

 Havana and around Cienfuegos (Pilsbry) ; Bahia Honda and 

 Cabanas Light (J. B. Henderson). Haiti and Santo Domingo 

 (Salle, Gabb). Porto Rico (Riise). Bermuda. 



Cyclostoma marginata SAY, Journ. A. N. S. Phila., ii, 1821, 

 p. 172 (Upper Missouri). Bidimus marginatus Say, BINNBY, 

 Terr. Moll., iv, p. 136. PFR., Mon. Hel. Viv., ii, p. 76. WEIN- 

 LAND, Jahrb. d. m. Ges., 1880, p. 376 (Jeremie and Port-au- 

 Prince, Haiti). Pupa, marginata Say, MARTENS, Biologia 

 Centr. Amer., Moll., p. 329, pi. 19, f. 1 (Mexico, "probably 

 near the City"; also St. Croix). - - Pupoides marginatus 

 (Say), PILSBRY & VANATTA, Proc. A. N. S. Phila., 1900, p. 

 586. WALKER, Occas. Papers Mus. Zool. Univ. Michigan, no. 

 15, 1915, pp. 2-10 (localities in Ariz., N. Mex., Texas, Okla.). 

 Pupa falla-x Say, GOULD, Boston Journ. Nat. Hist., iv, p. 

 357, pi. 16, f. 15. PFEIFFER, Mon. Hel. Viv., ii, p. 309. BIN- 

 NEY, Terr. Moll., v, 1878, p. 203, pi. 52, f. 1 (shell), pi. iv, f. T 

 (teeth). GIBBONS, Journ. of Conch., ii, 1879, p. 131 (Havana, 

 Puerto Plata, Curacao, Cartagena, Puerto Cabello). Palu- 



