MOLLUSQUES TERRESTRES ET FLUVIATILES. 417 
Helicina ternis, Pfeiffer, Monog. Pneumon., suppl. II, p. a 3 o, i 865 . 
Helicina vernalis, Pfeiffer, Monog. Pneumon., suppl. II, p. 23 o, 1 865 . 
Helicina Lindeni, BIuiul, in Amer. Journ. of Conclt., vol. Il, p. Ga, 186G. 
Helicina ternis, Bland, in Amer. Journ. of Conch., vol. 11 , p. 6 a, 1 866. 
Helicina vernalis , Bland, in Amer. Journ. of Conch., vol. 11 , p. Ga, 18G6. 
Helicina Lindeni, Sowerby, Thésaurus Conch., vol. 111 , llelicina, n° 1 53 , pl. CCLXXII, fi;;'. a 58 -a 6 o, î SGG. 
Helicina Lindeni, Bceve, Conchol. ïconica, vol. XIX, Helicina, pi. XIII, fig. na, 1873. 
Helicma Lindeni, Pfeiffer, Monog. Pneumon., suppl. 111 , p. 276, 1876. 
Helicina tennis, Pfeiffer, Monog. Pneumon., suppl. 111 , p. 268, 187G. 
Helicina vernalis, Pfeiffer, Monog. Pneumon., suppl. III, p. 268, 187G. 
Helicina Lindeni, Angas, in Proc. Zool. Soc. London, p. h 84 , 1879. 
Helicina Lindeni, Paetel, Catal. Conch. Sormnl., p. 191, i 883 . 
Helicina tennis, Paetel, Catal. Conch. Samml. , p. 19a, i 883 . 
Helicina vernalis , Paetel, Catal. Conch. Saminl., p. 19a, 1 883 . 
Helicina Lindeni , Paetel, Catal. Conch. Saminl. , vol. II, p. 9 G , 1889. 
Helicina tennis , Paelcl, Catal. Conch. Samml., vol. II, p. 5 oi, 1889. 
Helicina vernalis, Paetel, Catal. Conch. Samml. , vol. II, p. 5 oa, 1889. 
Helicina tennis, var. Lindeni, Marlens, in Biol. Centr.-Americana ; Mollusca, p. 34 , 1890. 
lesta globoso-conica , tcnuiusctila, subtilissime striatula et punctata, subdiaphana , pallide straminea, vel 
CQrnea, vel purpurea, supra medium, varie gala; spira conica, acutiuscula ; anfr. 6 vix convexi tiscali , idtimus 
itl flatus, antice non descendons, basi planiusculus ; apertura parum obliqua, semiovalis, altior quant lalior; 
pcvistomn brevilcr expansum, rejlexiusculum , margine columcïlari leviter arcuato, extrorsum in denliculum 
desinente et callum exigutm, tenuem supra emiltenle. — Operculum tenue, caslanço-purpureum , nucleo pallido. 
Iham. maj. 11 1/2 mili; min. 10 mil!. ; ait. 8 mill. 
L«r. j 2 . Flavcscenti-albida , anfractu ultimo medio unicingulalo, cingulo angustissimo'c punchs luteis , pellu- 
c ‘d>s composito. 
Helicina ternis, var. ( 3 , Pfeiffer , Monog. Pneumon., vol. I, p. 37a, i 85 a. 
y. Comeo-albida , obsolète rubro trifasciata, sub lente granulata. 
Helicina Ambeliana, Sowerby, Thésaurus Conch., vol.I, p. 8, pl. I, Gg. 19, 18^7 (non Ambieliana , Boissy). 
Helicina tennis, Pfeiffer, in Proc. Zool, Soc. London, p. ia 4 ( partim ), 1 848 . 
Far. § [p], LVI, fig. 1, 1 a, 1 b). Unicolor, albida, vel luteo-albida (Coll. Morelet). 
Helicina vernalis, Morelet, Testacea noviss., 1'° partie, p. 20, 1849 (partim). 
F«î\ s [pl. LVI , fig. 2, 2 a, a b). Roseo-fulvida , spira et parte supera anfractus ultimi roseo-purpureis , 
P ar te basali pallide fulvida (Coll. Morelet). 
Helicina vernalis, Morelet, Testacea noviss. , 1” partie, p. 20 , 1849 (partim). 
I (pl. LVI, fig. 3 , 3 a, 3 b). Fulva, anfractu ultimo purpureo-fusco , bifascialo (Coll. Morelet). 
Helicina vernalis , Morelet, Testacea noviss., 1” partie, p. 20, i 84 g (partim). 
Helicina tennis, Chemnilz, Conch. Cab., ed. nov., p. 4 o, pl. VII, fig. 33 et 34 , i 85 o. 
Var 
c 'dum 
Cliiapensis. Sub lente magis minusve malleata , rubello-cornea , obsolète saturatius fasciata. 
nigro-purpurascens , nucleo pallido. 
Oper- 
53 
ZOOLOGIE DU MEXIQUE. VII e PARTIE. II. 
IMPRIMERIE NATIONALE. 
