432 MOLLUSCA. 
2. Amnicola panamensis. 
Amnicola panamensis, Tryon, Proc. Acad. Phil. 1863, p. 146, t. I. fig. 6'; Tate, Amer. Journ. 
of Conch. v. p. 153 (1870) . 
Hab. ¥F. Nicaragua: Javali, in the Chontales district, at an elevation of 1750 feet, in 
a swampy pool at the roots of aquatic plants (Zate 2). 
W. PanaMA: Panama (Capt. Field '). 
8. Amnicola orizabensis. 
Amunicola cincinnatiensis (Anthony), Tryon, Amer. Journ. of Conch. ii. p. 11 (1866) °. 
Amunicola orizabensis, Crosse & Fisch. Journ. de Conch. xxxix. p. 24 (1891) *; Miss. Scient. Mex., 
Mollusca, 11. p. 263, t. 50. figg. 4, 4a, b°. . 
Hab. ¥. Mexico: near Orizaba (Sallé?; Botteri 1~%) ; Mexico, without nearer 
indication of locality (Uhde, in Mus. Berol.). 
4, Amnicola hyalina. 
Paludina hyalina, Morelet, Test. Noviss. 11. p. 21 (1851)* (nec Anton, 1839) (not hyalina, Lea, 
1864, Obs. Unionide, i1., which is a deformity of Planorbis exacutus, Say); Kiister, in 
Martini & Chemnitz, Syst. Conch.-Cab. ed. 2, Paludina, p. 61, t. 11. figg. 21, 22°. 
Hydrobia (?) hyalina, v. Frauenf. Verh. zool.-bot. Ges. Wien, xiv. p. 614 (1864) *. 
Amnicola guatemalensis, Fisch. & Crosse, Miss. Scient. Mex., Mollusca, ii. p. 264, t. 50. figg. 5 
5a, b*. 
Hab. W. Guatemata: Lake of Amatitlan (Morelet !~4), 
S.W. Costa Rica: marshes of Sierpe, 5 metres above the sea, on aquatic plants, 
April 1892 (Pittier). 
) 
5. Amnicola rhegoides. (Tab. XXII. fig. 4.) 
Paludina rhegoides, Morelet, Test. Noviss. ii. p. 22 (1851) °. 
Hab. Satvapor: Lake Coatepeque (Morelet } 2), 
I am indebted to Mr. Edg. A. Smith for a drawing of this little-known species from 
Morelet’s type, now in the British Museum. According to his note, the largest 
specimen is 5 millim. long, with six whorls, narrowly perforated, of greenish-yellow 
colour, the peristome continuous, slightly thickened. 
The name rhegoides, from the Greek word pnyq (rim or slit), refers to the narrow 
perforation. 
6. Amnicola coronata. | 
Paludina coronata, Pfr. in Wiegmann’s Archiv f. Naturg. 1840, p. 253'; Philippi, Abbild. neuer 
Conch. i., Paludina, p. 118, t. 1. fig. 17°; Kiister, in Martini & Chemnitz, Syst. Conch.- 
Cab. ed. 2, Paludina, p. 51, t. 11. figg. 9-12 °, 
