246 SMITH: MOLLUSCA OF TRINIDAD. 
it “approaches to P. paropserdes, a species described by d’Or- 
bigny from South America,” and subsequently he observes that 
it is “‘very near to P. haldemant Adams, Jamaica.” This view 
is also strengthened by the fact, that in a series of nine speci- 
mens which he kindly presented to the Museum in 1885, six 
are referable to P. Haldemani C. B. Adams, and three to P. /ucidus. 
*Planorbis Gundlachi Clessin. 
Planorbis Gundlachit (Dunker, MSS.), Clessin, Conch. Cab., 
Sk Bs [O. WAG, TOL TK,  S, TSA). 
This species does not occur in Mr. Guppy’s list. It may 
on comparison prove to be the same as the preceding species. 
39.—Physa (Aplecta?) rivalis (Maton & Rackett). 
40.—-Paludestrina crystallina Pfeiffer. 
Paludina crystallina Pfr... Wiegmann’s Arch. f. Naturgesch. 
1340,9p. 253 ; ebilippi, Abbilds vol asp. 02S.) pleletenor 
austere, (Comes, Calo, 0, Fe, Ol sa, Wy, 8: 
Paludestrina auberiana @Orbigny in Ramon de la Sagra, 
ist Cub. Moliusq:; vol: ai; p: S)splicc, 1G, 7 (sae) 
(var. coronata). 
faludina coronata Pfeiffer, of. ct, p. 253; Philippi, of. céz., 
Dy Trea pleas tenga) Keusterqopuc7z pus) pleen tae es 
flydrobia coronata. Martens, Festschrift Gesell. Nat. Freunde 
Bering mis 7 2 apa2Ocnmple iy tpt 
Paludestrina candeana VOrbigny, of. ciz., p. 9, pl. x., f. 13, 14. 
Melania spinifera C. B. Adams, Proc. Boston Soc. Nat. Hist., 
1845, vol. 11., p. 17. 
Bithinia spiralis Guppy, Ann. Mag. Nat. Hist., 1864, vol. xiv., 
p: 244; Proc. Set ‘Assoc, Tnmidad; vol. a, p. 3486); 
as Paludestrina. 
Amnicola candeana Guppy, Journ. of Conch., 1893, vol. vii. 
p. 224. 
Hab.: Cuba (Pfr.); Cuba and Guadaloupe (d’Orb.) ; Vene- 
zuela (Martens) ; Jamaica (C. B. Adams) ; Trinidad (Guppy). 
J.C., vili., Oct. 1896. 
