GASTROPODA (pulmonatA operculata). MotL 77 
Tibet and Yarkand ; id. Handl. Ind. Mus. pp. 232-237. Sheik of 2 
Mexican species figured by Fischer & Crosse, Moll. M^xique, pi. xxvii. 
Physa. Five Mexican species figured ; iid. 1. c. pis. xxvii. & xxx. 
Aplecta. Six Mexican species figured ; iid. 1. c. pis. xxvii. & xxx. 
Planorhis. S. Clessin begins a monograph of this genus, enumerating 
13 known subgenera, in Kiister’s Conch. Cab. pt. 270, pp. 30-36a. 
Planorhis grcccus, Euboea, and stossichi, Dalmatia, spp. nn., Clessin, 
Mai. Bl. XXV. pp. 125 & 126, pi. v. figs. 6 & 9. 
Planorhis alhus, var. n.. Lake Pankong, Icevis, var. n., Ladak, and suh~ 
angulatus, var. n.. North Tangitar, Kashgar, perhaps a new species ; 
Nevill, Moll. Yarkand Exp. pp. 10 & 11. 
l^Planorhis'] Helisoma plexatal^-urn], sp. n., Ingersoll, Bull. U. S. Geol. 
Surv. ii. [1875], p. 136, Colorado. 
Ancylus, 2 Mexican species figured; Fischer & Crosse, 1. c. pi. xxx. 
Thalassophila. 
Amphihola. G. Schacko describes the radula of A.fragilis (Lam.), 
solida [sQQ below], and hurniana (Nevill), that of the type of the genus 
avellana (Gmel.) being still unknown. Median plate five-toothed, inter- 
mediate plates three-toothed, with a small accessory plate ; lateral hooks 
42-48, unciform. The radula considerably resembles that of Physa. 
J B. mal. Ges. v. pp. 1-9, pi. i. 
Amphihola solida^ sp. n.. Martens, tom. cit. p. 2, footnote, Australia. 
Sip)honaria, air-breathing; see Semper, supra, p. 11. 
Siphonaria alhida, sp. n., Angas, P. 7m S. 1878, p. 314, pi. xviii. figs. 14 
& 15, South Australia. 
Liriola peltoides (Carpenter, as Nacella), jaw and radula described by 
W. H. Dali, J. de Conch, xxvi. pp. 68-73, pi. ii. figs. 6 & 6 a. Ahcylus 
gussoni (Costa, living in the Mediterranean) is perhaps the same species, 
which may be widely distributed, as it lives on floating seaweed. See 
Scutulum. 
Gadinia reticulata (Sow.), found in the Society and Paumotu Islands ; 
Garrett, Q. J. Conch. 1878, No. 15, p. 335. 
Gadinia nivea, sp. n., Hutton, J. de Conch, xxvi. p. 36, New Zealand. 
Scutulum (Monterosato, 1877) = Allerya (Morch, 1877, preoccupied), 
S. gussoni (0. G. Costa, as Ancylus) = Patelloida vitrea (Cantraine), 
rather allied to S^Aionaria ; Monterosato, J. de Conch, xxvi. p. 320. 
PULMONATA OPERCULATA. 
Cyclophorid^. 
Cyclophorus zehrinus (Bens.), var. n. aureo-lahris, Sibsagar, hensoni 
(Pfr.), var. n. cryptomphaloides, Naga UliWs,, pearsoni (Bens.), var. n. suh- 
alahastrum, Arakan Hills, scurra (Bens.), var. n. davidsoniana, Tenas- 
serim, aPd Ichasiensis, new name for siamensis (Sow.), which is not from 
Siam, with other notes on various species and varieties from British 
India; Nevill, Handl. Ind. Mus. pp. 259-273. > 
