120 CtCLOPaOBtDiE. 



last whorl. Suture impressed, the sutural tube close behind the 

 aperture, 3 mm, distant, 3 mm. in length and curving backwards. 

 Whorls 4, the iast expanding rapidly. Aperture circular, sub- 

 vertical. Peristome double, not very thickened, slightly reflected, 

 at the suture, the outer lip is extended forward into a long spout 

 resting on the periphery. 



"Major diam. 18*75 ; alt. axis 4*8 mm." (Gochrin-Ausien.) 



Hah. India: Luyor, Abor Hills (Oakes). 



" This is close to Pteroci/clos s^nramentum, but is distinct in its 

 much flatter apex, and far wider umbilicus. The peristome pre- 

 sents a stage further towards, and has reached the development 

 of Spiracuhun, rendering it a more than usually interesting 

 species." (Godwin- Austen.) 



169. Pearsonia mastersi, Ilanley cf- Theobald. 



Pteroci/clos {Spiracidum) mastersi (Blanford MS.), Hauley & 



Theobald, Couch. lud. 1870, p. 3, pi. o, tiji-. 1. 

 Pteroci/clos mastersi, Pfeiffer, Mon. Pneum. Suppl. 3, 1876, p. 386. 

 Spiracidum mastersi, Blanford, J. A. S. B. xlvi, 1877, p. 314; 



Theobald, Cat. Shells Brit. India, 1876, p. 38. 

 Pteroct/ctus {Spiraciilum) mastersi, Nevill, Hand List, i, 1878, 



p. 263. 

 S/nracidum (s. str.) mastersi, Kobelt & Mijllendortf, Nachr. Dents. 



Malak. Ges. xxix, 1897, p. 114; id., Cat. Pneum. 1899, p. 26. 

 Pearsonia [Pearsonia) mastersi, Kobelt, Das Tierreich, Lief. 16, 



1902, p. 114. 

 Pearsonia mostrrsi, Kohelt, Conch. -Cab., Cyclophoridae, ii, 1911, 



p. 769, pi. 113, fig. 9. 



" Testa latiesime umbilicata, depressa, epidermide crassiuseula, 

 fusca, scabra, decussato-subcostulata induta, atque liris tribus 

 pilosis, una juxta peripheriam, altera supra, tertia infra, circum- 

 data ; sub epidermide alba, fasciis angulatis transversis castaneis 

 notata ; lineis incrementi confertis lirisque spiralibus minutis 

 magis distantibus decussatim ornata. Spira fere ]dana, apice vix 

 emersa. Anfr. 5, rotundati, ultimus antice longe solutus, valde 

 descendeus, paulo ante solutionem tubulo brevi, curvato, pervio, 

 longitudinaliter striato, ad anfr. penultimum excurrente, antice 

 compresso, in rimam apertam intra anfractum ultimum desinente, 

 postice tereti, extus patente, 6-8 mill, pone aperturam oriente, 

 munitus. Apertura diagonalis, cii'cularis ; peristoma incrassato- 

 expansum, subduplex, superne in rostrum subtubuliforme, antice 

 porrectum, excurrens. Operculum corneum, intus concavum, extus 

 convexum, marginibus anfractuum liberis lamelliferis." 



"Diam. maj. peristomate incluso 24, min. 16^, alt. 5, ap. diam. 

 intus 6 mill," {Blanford.) 



Hah. India: Grolaghat, IS'aga Hills (^l/as/ers). 



" This shell differs from all other known forms ol S/nrandum by 

 having the last whorl free and descending for a considerable 

 distance, and by having, besides the sutural tube, a projection, 



