172 
MOLLUSOA. 
BiiUmulas cuernavicensis^ sp. n., Crosse & Fischer, J. de Conch, xxii. 
p. 283, Mexico. 
BuUmuliis chrysalis (Pfr.), jaw (goniognath, but with an accessory- 
plate, resembling that of Saccinea) and radula described by Binney, P. 
Ac. Philad. 1874, p. 53, pi. v. figs. 11-13; laticinctus (Cuppy) and baha- 
mensis (Pfr.), radula. Bland & Binney, Ann. Lyc. N. York, x. pp. 81 & 
82, pi. ii. figs. 1 & 3-5. 
Balimulus {Lc])tomcrus')^ see IlELKUDiii. 
Bidimiilus {Lijjarus) melo (Q. & G.), genital organs and radula ; Semper, 
1 . c. pis. XV. fig. 14, xvii. fig. 13. Bulimus anti^ioduni (Gray), E. Smith, 
Moll. Voy. Ereb. & Terr. pi. i. fig. 5 [from a young specimen ?]. 
Bulimulus {Plectostylus) peruvianus (Brug.), jaw and radula, Binney, 
P. Ac. Philad. 1874, p. 53, pi. v. fig. 2 ; genital organs, id. Ann. Lyc. N. 
York, xi. p. 35, pi. i. fig. 8. Binney and Semper do not agree as to this 
sub-genus, the latter, from his observations on the nearly allied B. chi- 
lensis (Less.), genital organs, 1 . c. pi. xv. fig. 6, radula, pi. xvii. fig. 12, 
places that species in Balimulus (llelicidce). 
{Bulimulus) Eurytus aulacostylus (Pfr.), jaw as in Bulimulus^ Cylindrella^ 
&c., radula figured ; Binney, Ann. Lyc. N. York, x. p. 282, and P. Ac. 
Philad. 1874, p. 59, pi. vi. fig. 2. 
Placostylus (Beck). According to Semper, Reis. Arch. Philippin. hi. 
the sub-genera Placostylus and Charis of the old genus Bulimus belong 
to the Goniognatha^ their jaw agreeing with that of Otostornus ; he has 
examined P. elohatus (Gould), genital organs, 1 . c. pi. xv. fig 5, radula, 
pi. xvii. fig. 8, seemanni (Dohrn), radula, pi. xvii. fig. 9, and (Charis) ful- 
guratus (Jay), radula, pi. xvii. fig. 10. 
\_Placostylus'] Bulimus alexander (Crosse) var. leucostoma, B. porphy- 
rostomus (Pfr.) var. Candida^ and B. ouveanus (Dotzauer) var. alba^ 
Crosse, J. de Conch, xxii. pp. 108, 109, 182-185 ; B. pancheri var. 
Candida^ id. 1 . c. p. 102, pi. ii. fig. 3; all from New Caledonia. 
P. Strang ei (Pfr.), Tapparone-Canefri, Moll, viagg. Magenta, p. 86, pi. ii, 
fig. 11 .' 
Macroceramus swifti, Bahamas, and klatteanus, Hayti, spp. nn.. Bland, 
Ann. Lyc. N. York, xi. pp. 83 & 84. 
Macroceramus concisus (MoralQi) = polystreptas (Tristram), Crosse & 
Fischer, Moll. terr. et fluv. Mex. p. 421, pi. xviii. fig. 1. 
Cylindrella. 10 species from Mexico and Central America fully de- 
scribed and exactly figured, including sioiftiana (Crosse), morini and subtUis 
(Morelet) ; lid. 1. c. pp. 405-415, pi. xvii. 
Cylindrella sanguinea and brevis (Pfr.), genital system ; Binney, Ann. 
Lyc. N. York, xi. p. 34, pi. ii. figs. 7 & 3. 
Cylindrella gracilicollis (F4r.) is from Hayti, and has two revolving 
lamellae inside ; Bland, tom. cit. p. 82. 
Amphibulima patula (Brug.) and rubescens (Desh., as Succinea), jaw, 
radula, and genital organs ; Binney, P. Ac. Philad. 1874, pp. 44-47, pis. 
vii. & viii., and Ann. Lyc. N. York, x. pp. 344 & 345 ; P. Fischer, J. de 
Conch, xxii. pp. 141-148, pis. v. figs. 8-13, vi. figs. 1-7. The former 
remarks slight variations in the dentition between individuals from 
Guadeloupe and St. Kitts and Dominica; the latter (figs. 8, 12, 13) main- 
