ZOOLOGICAL LITERATURE. 
m 
!31att. p. ^41. The 4nieyican species appear to ])e 4istinguishe4 
sl^arp edge of their operculum from those of India and the Eastern islands^ 
Upd may forn^ a distinc|; suhgenus witj^ the name Aperostoma (Troschel). 
Cyclotm b\muatu8j l\Iartens^ Mai. Bliitt. 1804, p. 113^ pi. 3. figs. 1, 2, from 
posta Rica; distinguished by two notches in the peristome. — Cyclotus trini^ 
tensis and O', rugatiis, Lechmere Guppy, Ann. & Mag. Nat. Hist. xiv. pp. 246 
and 246, from Trinidad. 
Q/flutu^fasciatus, Martens, Monatsb. Acad. Wiss. Beyl. 1804, p. 117, from 
Celebes; C. i'etiQulatus, Marteps, 1. c., from Timor and Flores; C. succinctus^ 
Martens, 1. c., frpm Timor ; C. ptychorhapke, Martens, I c., from Westerly 
Borneo ; C, lipatulus^ Mprtens, /. c., from Amboina : C. bicarinatu^j Martens^ 
1. c. p. 118^ from Ceram ; C. carirndatus. Martens, /. o., froni Booroo. 
Cyclotus latistrigus, Martens, I, c. p. 110, from Western Borneo [is ap Qpi^- 
thpporusy 
QpistJioj^orus simatranus, Martens, 1. p. p. 116. Sunaatra. 
fterocyclos s^^matra^nuSi ^a^teps, 1. c. p. 116. Sumatrp. 
Cyclophoms. The Indian species arrpnged in natural groups by Blanfprd, 
.^nn. & Mag. Nat. Hist. 1864; xiii. pp. 452-464, and by the Recorder jp 
'Malac. BUitt, 1864, p. 130. 
Oyclophorus arthriticus, Theobald, Journ. As, Soc. Beng. p. 246, Pegu. — Cy-. 
clophorus debeauxi, Cyosse, Journ. Conch. 1804, pp. 42 and 321, pi. 12. fig. 1^ 
from Singapore \_=^aquilu, Sow. ?]. 
Cyclostoma biaugtdatum, Pease, Proc. Zool. Soc. 1864; p. 674, Sandwich 
Islands? \^Cy clophorus? allied to C. obligatus, Gould.] 
Leptopoma dohrni, Adams and Angas, Proc. Zool. Soc. 1864, p. 38. New 
Ireland. 
AlyccBus. The known species arranged into natural groups by Blanford, 
Ann. & Mag. Npt. Hist. 1864, xiii. pp. 467-459. 
Alycceus longituba^ Martens, Monatsb. Ac. Wiss. Berl. 1864, p. 120. Sumatra. 
Rhaphaulus ceramicus, Martens, ibid. p. 118. Ceram. 
Pupinella macgillivrayi and P. whartoni, Cox, Catal. Austral. Land-shells, 
p. 32, and Ann. & Mag. Nat. Hist. xiv. p. 184. Port Denison, Queensland. 
Pupina blanfordif Theobald, Journ. As. Soc. Beng. p. 247, Pegu; Piipina 
diffiedis, Semper, Proc. Zool. Soc. 1884, p. 252, Palaos Islands, Philippines; 
Pupina ivilcooei, Cox, Catal. Austral. Land-shells, p. 32, and Ann. & Mag. Nat. 
Hist. xiv. p. 183, Clarence River; Pupina coxi, Morelet, Journ. Conefi. p. 289, 
Port Curtis, Australia (sub lente confertim styiatula). 
Rhegistoma. , Dr. von Martens, in a paper entitled Helix 
problematica der Jugendzustand von Rhegistoma ” and pub- 
lished in Malac. Blatt. 1864, p. 109, has shown that the young 
shell of Rhegistoma {grande and fuscum) di tiers much from the 
adult in having a flattened form and open umbilicus, and in not 
having the peculiar glossy appearance of the adult, and that it 
has been described as Helix problematica. The supposition that 
the one is merely the young state of the other has been con- 
firmed by opening several adult shells. Also Dr. Pfeiffer ha^ 
convinced himself of the truth of this observatipn. 
