AMNICOLA. 433 
Hydrobia (Pyrgula) coronata (Pfr.), v. Mart. in Wiegmann’s Archiv f. Naturg. xxiv. p. 192 
(1858) *. 
Amnicola coronata (Pfr.), Fisch. Journ. de Conch. viii. p. 363 (1860) °; Crosse, Journ. de Conch. 
XXVill. p. 264 (1890) °; Fisch. & Crosse, Miss. Scient. Mex., Mollusca, ii. p- 265, t. 50. 
fige. 6, 6 a—c’. 
Paludestrina coronata, Chenu, Manuel de Conch. i. p. 303, fig. 2139 °. 
Hydrobia coronata, vy. Mart. Binnen-Moll. Venezuela’s (Festschr. d. Ges. naturf. Freunde in 
Berlin, 1878), p. 52 (208), t. 2. figg. 13 a-h° (radula and embryonal shell); Strebel, 
Beitr. Mex. Land- und Siissw.-Conch. i. p. 33, t. 5. fig. 34 (1873) °°. 
Pyrgulopsis coronatus, Ancey, Bull. Soc. Malac. Fr. v. p. 197 (1888) ”. 
Potamopyrgus coronatus (Pfr.), var., Pilsbry, Proc. Acad. Phil. 1891, p. 328. 
Melania spinifera,.C. B. Adams, Proc. Bost. Soc. Nat. Hist. ii. p- 9 (1845) *; Contrib. Conch. i. 
p. 45.™. 
Paludestrina candeana, d’Orbigny, in Ramon de la Sagra’s Hist. fis. polit. y nat. de Cuba, 
Moluscos, p. 153, t. 10. figg. 13, 14 (1845) *; Macé, Journ. de Conch. xxxi. p- 82 (1888) *. 
Amnicola candeana, Petit, Journ. de Conch. v. p. 152 (1856) 7; Bean, Cat. Coquilles de Guade- 
loupe, p. 17 (1858) **. . 
Paludina ornata, Morelet, Test. Noviss. ii. p. 21 (1851). 
Amnicola ornata, Fisch. Journ. de Conch. viii. p. 364 (1860) ”°. 
Tryonia ornata, Tate, Amer. Journ. of Conch. v. p. 158 (1870) ”. 
Amnicola crystallina, var. 8. coronata and var. y. spinifera, Shuttleworth, Mittheil. naturf. Ges. 
Bern, 1854 (Diagn. neuer Moll. vii.), p. 159”. 
Amanicola crystallina, var., v. Frauenf. Sitzungsber. d. Akad. Wiss. Wien, xviii. p. 83 (1856) (part.) **. 
Hydrobia cristallina (Pfr.), v. Frauenf. Verh. zool.-bot. Ges. Wien, xiv. pp. 513, 588, 593, 595, 
615, 648 (Verz.d. Namen v. Paludina, pp. 3, 83, 35, 55, 88) *. 
Pyrgulopsis spinosus, Call & Pilsbry, Proc. Davenport Acad. Sci. v. p. 14, t. 2. figg. 17-19 (1886) * ; 
Ancey, Bull. Soc. Malac. Fr. v. p. 192 (1888) **. 
Pyrgulopsis nicaraguanus and wrighti, Ancey, Bull. Soc. Malac. Fr. v. pp. 194, 199 (1888) *. 
Hab. Nortu America: Texas 119, 
E. Mexico: Vera Cruz, in plenty, in mud and sand in a subfossil state, especially 
in the Laguna de los Cocos (Sérebel 1°) ; Vera Cruz!!. 
Yucatan: Merida and Shkolak (Hetlprin !*). 
SaLtvapor: Lake Coatepeque (Morelet 19, Ancey ?"). 
W. Nicaragua: on the muddy shores, and in pools by the margins, of the Lake of 
Nicaragua ; La Playa, Granada (Tate *1); Lake of Nicaragua (Ancey 2"). . 
CotomBiA: Barranquilla, near the mouth of the Magdalena River '. 
VenezveLta: Lake of Valencia, in a subfossil state 9. 
ANTILLES : Cuba}, Jamaica 18, Puerto Rico 22, Vieque #2, Guadeloupe '8, St. Thomas *?, 
St. Martin 1%, St. John 2, 
Var. unicarinata, n. | 
Hydrobia coronata (Exemplare mit dornenloser Kante), v. Mart. Binnen-Moll. Venezuela’s, p. 52”; 
Strebel, Beitr. Mex. Land- und Siissw.-Conch. i. p. 34, t. 5. fig. 34a”. 
BIOL. CENTR.-AMER., Terr. and Fluviat. Mollusca, September 1899. 55 
