THEOBALDIUS. 



37 



apertura diagonali, subcirculari, intus inargaritacea ; perist. con- 

 tinut), breviter adnato, i-ecto, siibduplicato, vix iiicrassato. 



" Diaui. uiaj, 13§, min. 11, alt. 4 mill." {Pfeiffer.) 



Hah. Ceylou {Mr. Lear). 



54. Theobaldius niaculosus, Soiuerhi/. 



Cyclostoma maculosrnn, Sowerbv, Proc. Zool. Soc. 1843, p. 66 ; 

 id., Thes. Conch, i, 1843, p. 112, pi. 31, figs. 256, 257; Pfeiffer, 

 Conch.-Cab., Cvclostomaceeu, 1847, p. 54, pi. 7, figs. 4-6. 



Cyclo2)horus maculosits, Pfeiffer. Zeits. Malak. viii, 1851, p. 143; 

 id., Mon. Pneum. 1852, p. 91; Adams, Gen. Rec. Moll, ii, 

 1855, p. 280 ; Pfeiffer, op. cit. Suppl. 1, 1858, p. 62 ; Reeve, Conch. 

 Icon, xiii, Cyclophorus, 1861 , pi. 5, fig. 17 ; Pfeiffer, op. cit. Suppl. 2, 

 1865, p. 72 ; Suppl. 3, 1875, p. 116. 



Theobaldius Diaculosiis, Kdbelt & MoUendorft", Nachr. Dents. Malak. 

 Ges. xxix, 1897, p. 105; id., Cat. Pneum. 1899, p. 17; Kobelt, 

 Das Tierreich, Lief. 16, 1902, p. 93 ; id., Conch.-Cab., Cyclo- 

 phoridae, i, 1907, pp. 560, 566. 



Original description :—'' Cyc]. testa suborbiculari, depressa, 

 crassiuscula, laevi, castanea, albido-maculosa, spira paululum levata, 

 apice uigricante ; anfractibus 4, rotundatis, obsolete spiraliter 

 striatis ; apertura subcirculari, peritremate subincrassato, sub- 

 reflexo, postice acuminatiusculo ; umbilico maxiiuo, spiraliter 

 castaneo lineato." (Sowei-by.) 



Alt. 13, maj. diam. 30, min. 23 mm. 



Bah. Southern India {Kohelt Sf Mollendorff). 



The country of origin of this species was unknown to Sowerby, 

 and all subsequent writers dealing with it have queried its habitat, 

 except Kobelt and Mollendorff, who indicated Southern India 

 in 1897. 



55. Theobaldius nivicola, Godivin-Austen. 



Ci/clop/iorus (Mi/xostoma) nivicola. Godwin-Austen, J. A, S. B. xlv, 



part 2, 1876, p. 173, pi. 7, fig. 1.' 

 Cyclophorus [TheobakUus) nu'/co/a, Nevill, Hand List, i, 1878, p. 275. 

 Theohaldius nivicola, Kobelt, Das Tierreich, Lief. 16, 1902, p. 94. 



Oriyinal description: — "Shell flatly discoidal, openly umbilicated. 

 Whorls 5, with distinct longitudinal striation, the last well 

 rounded on the periphery, large, the rest rapidly decreasing, 

 covered with a thick epidermis, colour dark brown-umber. At 

 half the circumference from the apes fine zigzag pale ochreous 

 markings ornament the upper surface; these widen and are 

 arranged closer towards the apex, which is pale ; a black band on 

 the periphery is bounded by a pale narrow one. Spire slightly 

 raised. Suture deep. Aperture oblique, very slightly descending, 

 circular. Peristome thickened, double, reflected, with a small 

 re-entering notch near the suture. Operculum corneous, flat. 



" Major dium. 1-0 [25-5 mm.], alt. 0-45 inch [11-25 mm.]. 



jya6. India; Dafla Hills, Assam {Godiv in- Austen). 



