34 DRYM^EUS, MEXICO AND CENTRAL AMERICA. 



It is a curious fact that previous to the year 1882 no exact locality 

 was known for this very remarkable shell, the largest of the Mexican 

 species of this genus. It seems that in the Paris Museum it has been 

 mixed with shells collected by Mr. Dombey in Peru, or rather Chili: 

 see Lamarck, Hist. Nat. des Anim. sans Vert. ed. I, vi, p. 141, 

 Auricula (Chilina) dombeyana, and ibid. p. 76, Helix peraviana, 

 identical with laxata, Fer., which botli inhabit Chili and not Peru; 

 hence the name " dombeyanus" and the erroneous indication of 

 Peru as habitat. Bernard! 's assertion that his specimen came from 

 the Solomon Islands is still less trustworthy. 



The name alcantarce was given in honor of the then Prince-Royal 

 of Portugal, Dom Pedro de Alcantara, afterwards king (1861). 



D. FENESTRATUS (Pfeiffer). PI. 7, figs. 11, 12, 13, 14. 



Shell rimate-umbilicate, conic-ovate, rather solid, sculptured with 

 oblique minutely undulating, close stride and some spiral impressed 

 lines; brown-whitish, painted with five interrupted blackish bands; 

 spire conic, rather acute, pale flesh colored above. Whorls 7, a 

 little convex, the last very shortly ascending in front, narrowed and 

 rounded at base. 



Aperture oval-oblong, little oblique, a little exceeding half the 

 shell's length; columella pliciform, receding, intense violaceous; 

 throat violaceous-brown ; peristome rather widely reflexed, white ; 

 columellar margin somewhat dilated, white ; parietal callus distinct, 

 violaceous (Mart.). 



Alt. 51, diam. 26, length of aperture 28 mill. 



ManzaniUo near Colima, western Mexico (Pieschel). 



Bulimus fenestratus PFR., P. Z. S., 1846, p. 29 ; Monogr. Helic. 

 Vivent., ii, p. 101 REEVE, Conch. Icon, v., Bulimus, pi. 36, fig. 214. 

 Orthalicus (Mesembrinus) fenestratus H. & A. ADAMS, Gen. Moll. ii. 

 p. 157. Bulimulus (Scutalus) fenestratus FISCH. and CROSSE, Miss. 

 Scient. Mex. Mollusca, i, p. 528. Bulimulus (Otostomus) piescheli 

 v. MART, in Monatsb. Akad. Wiss. Berl. 1863, p. 541 ; Malak. Blatt. 



xii, p. 22, pi. 1, fig. 10 (1865) Bulimus piescheli PFR., Monogr. 



Helic. Vivent, vi. p. 38 Bulimulus (Scutalus) piescheli FISCH. and 

 CROSSE, Miss. Scient. Mex., Mollusca, i, p. 509. Bulimulus pies- 

 cheli STREBEL, Beitr. Mex. Land- und Sussw.-Conch. v, p. 77. 

 Otostomus fenestratus v. MART., Biol. Centr. Amer., Moll., p. 200, 

 pi. 12, f. 1, 1 a, b. 



