74 Moll. 
MOLLUSCA. 
Oxytes sylvicola^ sp. n., Blanford, 1. c. p. 185, Burrail range, 3000-4000 
feet, North Cachar. 
IlemiplecM tinostoma, Tinnevelly Ghats, and enisci, Aghastyamullay 
Hills, both in Travancore, spp. nn., id. 1. c. pp. 187 & 188, pi. hi. figs. 1 
& 2 . 
[_Hemiplecta] Nanina dorice^ sp. n., Tapparone-Canefri, Ann. Mus. 
Genov, xvi. p. 61, New Guinea. 
[^Rhyssotd] Nanina sowerbiana (Pfr.), from the Carolines : variability ; 
Martens, SB. nat. Fr. 1880, p. 144. 
Macrochlamys ? platychlamySj sp. n., Bombay, tenuicula (H. Ad.) == 
effulgens (Theob.), Bombay and Western Ghats, and ? wynnii^ sp. n. 
Mari, Western Himalaya ; Blanford, 1. c. p. 197, pi. ii. figs. 6 & 9, pi. hi. 
fig. 5. 
Durgella. Note on its anatomy ; D. blanford^ sp. n., Assam, Godwin- 
Austen, P. Z. S., Dec. 1880. 
Euplecta (Semper) ; type. Helix subopaca (Pfr.), Ceylon. Blanford 
places 8 species from Continental India in this genus, including Helix 
climacterica (Bens.) and vidua (Blanf.) ; the latter is figured from Papan- 
assara, S. India, with a smaller variety. J. A. S. B. xlix. pt. 2, pp. 190-193> 
pi. ii. figs. 2 & 5. 
Trochomorpha planorbis (Lesson), from Sumatra : radula described by 
Schepman, in Veth’s Middel-Sumatra, iv. 3, p. 7, pi. ii. fig. 3. 
Trochomorpha Jciiesteri (Pfr.) var. n., aud nigritella (Pfr.), variable in 
size and colour, warmorosa (Hombr. & Jacq.) = approximaia (Guillou, 
pt. Reeve), all from the Carolines ; Martens, SB. nat. Fr. 1880, pp. 145 
& 146. 
Helix (Thalassia) hreffti (Cox), from Thursday Island, Torres Straits ; 
Brazier, P. Linn. Soc. N. S. W. iv. p. 392. 
Sesara ? ingrami (Blauf.), Yoma Mountains, Pegu ; Blanford, 1. c. 
p. 193. 
Pachystyla (Morch, 1852) = Rotula (Semper, 1870). Radula and 
genital organs nearly as iu Nanina \ no horn-like prominence at the 
caudal pore, mantle-lobes not prolonged ; pillar lip of the aperture ordi- 
narily thickened. Peculiar to the Mascarene Islands ; 22 species distri- 
buted in 3 groups; — Pachyntyla proper; type, inversicolor 
Erepta (Albers, 1850), with columellar tooth ; type. Helix stylodon (Pfr.). 
Ccelatura^ see infra, and Caldwellia (H. Adams, 1873), small, fragile, 
trochiform ; type, //. phllyrina (Morelet). Martens, Moll, Maur. pp. 
191-195. Young specimen of P. inversicolor ^ with tooth-like knob at 
the pillar lip, pi. xix. fig. 6 ; anatomical description of this species by 
Schacko, tom. cit. pp. 341 & 342. 
Ccelatura, subg. n. of Pachystyla. Distinct by spiral sculpture ; for Helix 
ccelatura (Fer.), duponti (Morel.), scalpta (Mart.), semicerina (Morel.). 
Martens, Moll. Maur. pp. 192 & 195. 
Hyalina (Retinella) olivetorum (Herm.), var. or sp. n. ?, macrobiotus 
and subvar. n. sub-incerta, H. (R.) lihes^ sp. n., Nevill, P. Z. S. 1880, pp. 
104 & 105, Caves of Mentone, diluvial deposits. 
Hyalinia {Mesomphix') dtiboisi (Charp.), var. from Transcaucasia ; 
Bottger, JB. mal, Ges. vh. p. 121. 
