CERION, GROUP VII. 



Length 35, diam. 12^ mill. (Bruguiere's type). 



Length 32, diam. 12, to length 42, diam. 14 mill. (Matanzas spe- 

 cimens). 



Cuba : Matanzas. Various varieties occur along the whole N. 

 coast of provinces Havana and Matanzas; and according to Arango, 

 ihe entire island. 



Bulimus mumia BRUG., Encycl. Meth., i, p. 348. Pupa mumia 

 LAM., An. s. Vert, vi, p. 105; edit. DESH., viii, p. 168. Beck, 

 Index, p. 82. Turbo mumia WOOD, Index Testae., pi. 32, f. Ilia 

 {reduced from MARTINI'S figure). Helix (^Cochlodonta) mumia 

 Brug., FER., Tabl. Syst., p. 58, no. 459. Turbo mumia DILLWYN, 

 Descript. Catal., ii, p. 861. Strophia mumia MAYNARD, Contrib. to 

 Science, ii, p. 190, pi. 16, f. 3a, 3b, p. 191, f. 52. Strophia media 

 MAYNARD, iii, p. 18, pi. 4, f. 3, 4 (March, 1896) Cerion mumia 

 magister PILS. and VAN., Proc. A. N. S., Phila., 1896, p. 322, pi. 

 11, f. 4. 



Pupa ftriata SCHUMACKER, Essai d'un Nouv. Syst. Vers, p. 230, 

 - Pupa manica Lamk., DESH., Encycl. Meth., ii, p. 401 (typograph- 

 ical error for mumia} Pupa chrysalis Pfr., Monogr., ii, p. 321. 

 iKuSTER, Conchyl. Cab., p. 6, pi. 1, f. 7, 8. 



Bruguiere's description and the figures he cites agree best with 

 ithe large form found at Matanzas. As this place was settled in 1693, 

 tit is likely that the original specimen was brought from thence. I 

 do not know that this form occurs at any other locality. 



Typical mumia is larger than chrysalis, more cylindrical, with the 

 >peristome more broadly flaring and recurved, and the parietal 

 lamella usually better developed and quite long. It is sometimes 

 Teinforced by a callus or small tooth united to its left side. 



Fig. 95 of pi. 31 represents a specimen corresponding in size with 

 the original type. Fig. 96 is a larger shell. 



Form medium Maynard (pi. 31, fig. 97), described from two speci- 

 mens labeled " Cuba," differs from mumia by the smaller size with 

 Tather narrower lip. It is " yellowish white, marked everywhere 

 with longitudinal, zigzag lines of reddish-brown, which are occasion- 

 ally broken into lines." Length 30, -diam. 12^ mill. 



CHRYSALIS Ferussac. PI. 31, figs. 98, 99, 1, 3, 4, 5. 

 Thinner and more slender than typical C. mumia, with the termi- 



