Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
120 LIMNJEID^B.<br />
255. Planorbis (Segmentina) spirodelus, Westerlund.<br />
Plmiovhis (Segmentina) spirodelus, Westerlund, in Vega Exped.<br />
Vetenskapliga Jaktlagelser, Lv, p. 209, pi. 5, fig. 21.<br />
Orujinul description :—Testa flavescenti-cornea (anfr. prioribus<br />
rufis), supra convexa, medio impressa, subtus plana, concaviuscula,<br />
latiuseule unibilicata; afr. 5, primi lente, ultimi regulariter<br />
accrescentes et diameter penultimi ad apertiirain perfecte duplo<br />
minor quam reliqua spiraet spira tota magna, latitiidineanfractum<br />
ultimum ad aperturam multo superans ; anfr. ult. convexus, extus<br />
lente descendens, basi .«at acute angulatus, aritice non dilatattis ;<br />
apertura descendens, valde obliqua, forte lunata, obtuse cordnta,<br />
margine coKimellari subrecto, exteriore A*alde arcuatini producto ;<br />
faux pluries lamellis 3 albis coarctata. :<br />
Alt. 1'25, diam. 4'o mm.<br />
Hah. Point de Galle, Ceylon.<br />
256. Planorbis (Segmentina) sindicus {Benson).<br />
Planorhis (Sef/mentinn) sindicus (Benson), A. M. N. II. 18-50<br />
p. 350; H. •& T., 0, I. pi. 40, iigs. 4-6.<br />
Oricjincd description :—Testa minuta, perforata, sublenticulari,<br />
albida, IsBvi, subdiaphana, supra convexa; spira planiilata, apice<br />
depresso ; anfr. 2|, ultimo medio obtuse angulata, subtus convexo ;<br />
apertura cordata, obliqua, margine superior! arcuat;o, prominente,<br />
inferior! recedente.<br />
Alt. '66, diam. 2*5 ram.<br />
Hah. Upper Sind.<br />
257. Planorbis (Segmentina) cantori {Benson).<br />
Plmiorbis {Segmentina) cantori (Benson), A. M. N. H. ser. 2, v,<br />
1850, p. 341!; II. & T., C. I. pi. 40, figs. 1-3 ; Sowerby, in Reeve,<br />
Coneh. Icon, xx, pi. 10* fig. 79: Clessin in Conch.-Cab. 1884,<br />
p. 158, pi 23, fig. 9.<br />
Oric/inal description:—Testa uitidula, cornea, subdiaphana,<br />
radiato-striata, depressa, supra convexiuscula, spira planata, apice<br />
concavo, sutura bene impressa; anfr. 5^, convexiusculis, lente<br />
crescentibus, ultimo antice niajori, .subtus convexo, periphteria<br />
subcarinata; umbilico aperto, profundiusculo; apertura obliqua<br />
subcordiformi, margine supra valde arcuato, fuscato, infra leviter<br />
rotundato. ;<br />
Alt. 2, diam. maj. 7, diam. min. 6'25 mm.<br />
D:am, spirse 3'5 ; lat. anfract. ult., antice, 3 mm.<br />
Hah. Barrackpore.