MOLLUSCA. 
483 
BuKmm cxaratm (Mull.) found by Dr. Welwitsch on the most elevated 
parts of the island S. Thome in the gulf of Guinea ; shell perforated, peri- 
stome in the adult thickened, columella not truncated ; therefore neither an 
Achatina nor a Limicolaria. Morelet, Moll. Terr, et Fluv. Voy. Welwitsch, 
p. 69, Crosse, Journ. Conch, xvi. p. 131, pi. 6. fig. 2. 
Limicolaria hidalgoi (Crosse, Journ. Conch, xv. 1867), fully described and 
figured by the same, ibid. xvi. p. 170, pi. 6. fig. 1. Locality unknown. 
[^Limicolaria] Bulimus Jlammeus (Miill.), a variety of which, without bands, 
is said to be B. aurora (Jay) = efusus (Reeve), lives on the banks of the Niger ; 
B. chromatcllus (Morelet) on rocks in the virgin forest of the more elevated 
parts of Angola; B.jaspideus (Morelet) in muddy ground on the river Lucala, 
Morelet, Moll. Terr, et Fluv. Voy. Welwitsch, pp. 61-63 ; the two last figured 
pi. 3. fig. 2, and pi. 2. fig. 2. In one of the figures of B. cliromatellus, the 
columella is figured as being truncated, which is an error : Morelet, Journ. 
Conch, xvi. p. 145. 
Achatina monctaria, sp. n., Morelet, Moll. Terr, et Fluv. Voy. Welwitsch', 
p. 63, pi. 8. figs. 2 k 4, Benguela, see above, p. 438. AcJi. paivceana, welwitschi^ 
handeirana, hayoniana, tavaresiana (all of Morelet), and pcrfccta^ sp. n., Morelet, 
1. c, pp. 65-60, pi. 6. fig. 3, pi. 6. fig. 2, pi. 6. fig. 1, pi. 7. fig. 1, pi. 4. fig. 6 
h fig. 2, from Congo, Angola, and Benguela. The following are species of 
smaller size and of more elongated form : — Acli. cohihrina (Morelet), /. c. p. 70, 
pi. 4. fig. 1, zebriolata, sp. n., p. 72, pi. 3. fig. 1, polychroa (Morelet), p. 72, 
pi. 3. fig. 5, spectdaris (Morelet), p. 74, pi. 4. fig. 4, all from Angola, and A. 
lioHensicc (Morelet), p. 74, pi. 4. fig. 3, Benguela at an elevation of 9000 feet 
above the sea. 
The same author places in a distinct subdivision of Achatina the following 
species : — Ach. harbiyera (Morelet), p. 76, pi. 9. fig. 5, Journ, Conch, xvi. 
p. 1^4 j — marmorca (Reeve), island of S. Thome; its epidermis is longitu- 
dinally plaited, and beset with spiral rows of hairs ; Ach. clams (Pfr.), which 
he regards as nearly allied to his lotophaya^ also from S. Thome ; Icevigatay 
Pfr., from Serra de Pedras de Guinga, 3000 feet above the sea; and some 
others, which will be mentioned under the genus Stenogyra. 
Goniognatha. 
[Bulhmdus], Mr. Guppy has discovered that several species differ in their 
lingual teeth from B. oblongm, Trans. Linn. Soc. xvi. p. 192. The species 
examined are B. virgidatus, midtifasciatus (pi. ii. fig. 1), hnniaculatm, and 
aureolus ; the teeth are arranged in divergent rows. The horseshoe-shaped 
jaw of B. midtifasciatus is figured by Hogg, Trans. R. Microsc. Soc. xvi. 
pi. 13. fig. 85. The lingual teeth of B. auris-leporis and B. papyraceus 
(Mawe), from Rio Grande do Sul, are examined and figured by Heynemann, 
Mai. Bliitt. xv. p. 109, pi. 3. figs. 8 & 9 6, the jaw of the last being composed 
of about 25 pieces, the middle triangular, the lateral narrow, fig. 9. Bui. spo- 
;vrf?iCMs(Orb.) has the jaw simple and ribbed as the ixMQ Bidimus, Ileyncma.m, 
ibid. p. 108, pi. 4. fig. 6. 
Bidimulus laticinctus, Guppy, Ann. & Mag., Nat. Hist. i. p. 431, Dominica. 
— Bid. indistinctus, sp. n.. Guppy, 1. c. p. 436, Island of Grenada, West Indies. 
Bulimus vincentinus (Pfr.) — midtifasciatus (Guppy, not Lam.) = fmmacM- 
latus (Guppy, not Adams), from Trinidad. The true B. midtifasciatus of 
