18 LAND AND FRESHWATER 



Blanfcrd, under his Group II. Subgenus Scabrhui, writes as 

 follows : — it " comprises certain discoidal shells, also Burmese, as a 

 type of which C. calyx, Benson [Conch. Ind. pi. iv. fig. 4, p. 2, 

 Moulmaiu and not Akou-tong, Pegu, vide Bhmford, J. A. S. B. 1865, 

 p. 97, ^ho never found it there], may be selected. The operculum 

 IS thicker than in other Oi/clophori, and has free and rough margins 

 to its whorls, so as to be absolutely identical with that ot Ptero- 

 cyclos j)yll(itns [Conch. Ind. pi. cxxxv. figs. 2, 3, 4] and its allies. 

 In C. cab/.r, also, there is a slight expansion of the outer peristome 

 at the suture corresponding to the wing in PterocycJos. A similar 

 slight expansion is seen in 0. phanotopkns, Bens. [Conch. Ind. 

 pi. iv. fig. 8, Darjiling], from the Himalayas, which, however, has 

 a thin operculum. I consider, therefore, that in these forms and in 

 the Burmese species of Pterocyclos we have that almost complete 

 passage from one genus into the other, to which I have already 

 referred, and clear evidence of their close natural affinity. There 

 can be little doubt that PterocyvJos belongs to the same subfamily 

 as ChieJo]>horvs; and its associated genera, Uhiostoma, Sj^trraculum , 

 &c., must fall into the same group." 

 Craspedotropis, W. T. Blanford, A. M. N. H. vol. xiii. p. 454 (1864). 



— Type C. cusjmluh's, Benson : Nilgiri Hills. (Conch. Ind. 



pi. cxxxv. figs. 1-4.) 

 Original description : — " Testa acvminato-covoiclea , carinata, e'jji- 

 dermide fusca crassa Jimhriom carince prahente induta. Operculum 

 arctii'sime spiratnm'^ (W. T. B.) 

 Mcraulax, Theobald, J. A. S. B. p. 185, pi. xiv. fig. 4 (1876).— 



Type C scaler, Theob. : Travancore. 

 Original description: — " Cyclophori liuhiiu Planorbulari, testa 

 sidco brevi hitus instrzicta, opercido — ?" 



Leptopcmoides, G. Nevill, Hand-list, p. 273 (1878). Le2>topomaio{des 

 (Dom. emend.), Zool. Kec. p. 78 (1878). — Type lialophilus, Bs. : 

 Cevlon. (Conch. Ind. pi. vi. fig. 3.) 



= Group lY. \V. T. Blanford, A. U. K. H. vol. xiii. p. 453, 

 (1864). — Type ccelocomis, Bs. : South India. (Conch. Ind. 

 pi. iv. fig. 5.) 



Myxosto'ina, Troschel, Zeit. f. Malak., " Ueber die Gattungen der 

 Cyclostomiden,'' p. 44 (1847). — Type C. hrevis, Martyn : Pule 

 Condor. 



Original description: — '■'■ Declel onit vielen Winduvye^i, did, la- 

 mellbs ; GeJti'ms niedrig, vnt offenem JS'ahel. Mm^dsanm doppelt, 

 an die vorletzte Windumj ardehriend, der iwuere yanz ohne Einschvitt, 

 der dussere bildet an der vorJeiztcn Windnny ehun dillenariiytn Vor- 

 sprimg. Nur eine Art." 



M. peiiveriaimm {Cycl. jxtiverianum, GTay)=^brevis, Martyn : 

 Pulo Condor off Cochin China. 



Ditropis, AY. T. Blanford, Contrib. Ind. Malacol., J. A. S. B. p. 126 

 (186U). — Tyi)e pJanorhis, AY. T. Blf, : Travancore. (Conch. 

 Ind. pi. xxxvi. tigs. 5, 6.) 



