204 EUGLANDINA. 



apparently referable to this species are before me from Costa 

 Rica (W. M. Gabb) and Bocas del Toro, Panama (Mr. Duff). 

 Those taken by Gabb measure 25 to 28 mm. long, and vary 

 from the shape of Reeve's figure of isabellina to a stouter 

 form. Those from Bocas del Toro are small, 22x10 to 23 x 

 10.7 mm. I very much doubt whether E. aurantiaca Angas 

 is distinct from isabellina. 



73. E. AURANTIACA (Angas). Vol. I, p. 31. Costa Rica. 



74. E. DECIDUA (Pfr.). PL 23, figs. 37, 38. 



Shell fusiform, thin, striatulate, weakly decussated by spiral 

 impressed lines visible under a lens, glossy, whitish, varie- 

 gated with grayish-corneous cuticle deciduous in streaks. 

 Spire conic, obtuse; suture slightly margined. Whorls 6, a 

 little convex, the last about as long as the spire, tapering bas- 

 ally. Columella slightly arcuate, obliquely truncate. Aper- 

 ture a little oblique, somewhat semioval ; peristome simple, the 

 right margin regularly arcuate. Length 28, diarn. 11, aper- 

 ture 14.5x5.5 mm. (Pfr.). 



Mexico: Juquila, State of Oaxaca (Boucard). 



Oleacina decidua PFR., P. Z. S. 1861, p. 26 ; Malak. Bl., viii, 

 1861, p. 79; Monogr., vi, p. 284. -- Glandina decidua Pfr., 

 MARTENS, Biologia, p. 70, pi. 4, f. 12, 13. 



"The typical specimen described by Pfeiffer is not adult. 

 I am indebted to Mr. Edgar Smith for the drawing of it (fig. 

 38) and of another, also contained in the British Museum, 

 which is full-grown (fig. 37) " (Martens). 



75. E. OBTUSA (Pfr.). Vol. I, p. 24. 



Realejo and Polvon, Nicaragua. This species seems to con- 

 nect the group of smooth Central American forms with the 

 more normal Euglandinas. 



III. Section VARICOGLANDINA Pilsbry, n. sect. 



Shell having occasional impressed varix-lines and sometimes 

 color stripes, as in Varicella, otherwise like Euglandina. Type 

 E. monilifera. 



