1;08 CYCLOPHORID.E. 



300. Alycaeiis conicus, Godivin- Austen. 



Alycceus conicus, Godwin-Austen, J. A. S. B. xl, part 2, 1871, p. 87, 

 pi. 3, figs. 1, 1 a, 1 h \ Hauley & Theobald, Coucli. lud. 1875, 

 pi. 103, tigs. 8, 9; Pfeiffer, Mon. Pneuni. Suppl. 3, 1876, p. 386; 

 Theobald, Cat. Shells Brit. India, 1876, p. 39; Sowerby, in 

 Reeve, Conch. Icon, xx, 1877, Alycaus, pi. 1, tig. 9 ; Nevill, Hand 

 List, i, 1878, p. 290; Godwin-Austen, Land & Freshw. Moll. 

 India, ii, 1914, p. 387, pi. 143, tigs. 4, 4 a, 4 h. 



Ali/caeiis { OrtJialycaeus) conicus, Kobelt & Mullendorff, NacLr. 

 JDeuts. iNLalak. Ges. xxix, 1897, p. 149 ; id., Cat. Pneum. 1899, 

 p. 45. 



Alycaens (A/ycaeus) conicus, Kobelt, Das Tierreich, Lief. 16, 1902, 

 p. 342. 



Original description : — " ,Sbel] narrowly nmbilicated, turbinate, 

 thick, translucent pale corneous, pink or white, quite smooth, witli 

 shining lustre in fresh shells, with very strong regular filiform 

 costulation on the tumid portion of the last wliox'J, the sculpture 

 tern)inatiijg abrupt)}^ botli in front and behind with the exception 

 of some raised striae close beiiind the termination of the sutural 

 tube ; indistinct ribbing near the umbiHcus. Spire conoid, apex 

 obtuse; suture impressed; whorls -1-41, rounded, lust very 

 slightly swollen, constricted and enlarging slightly again near the 

 aperture. Constriction smooth, rather short ; sutural tube 

 moderate, commencingat 0'045 inch [1-125 mm.] distance from the 

 mouth. Aperture slightly oblic[ue, a perfect circle ; peristome 

 double, thick, inner continuous, projecting, slightly expanded, the 

 outer retrorelict. Operculum horny, multispiral, concave in 

 front ; smooth behind, no central boss. 



" Major diam. 0*12" [3 mm.] to 0*13" [3'2o mm.', minor diam. 

 0-11" [2-75 mm.] ; alt. 0-10" ^[2-5 mm.] to O'll"" [2-75 mm.]; 

 liiam. of aperture 0-06" [0 15 mm.] ; sutural tube 0-045" [0-11 

 mm.]." 



Hah. India : Limestone Hill and Samiamri, east of the Kopili 

 liiver, North Cacliar. 



"This shell is very close to Ah/cants vestitus, W. Blanford, 

 but differs in its smaller size, the upper whorls being quite 

 smooth, autl in the ribbing near the sutural tube being more 

 strongly and coarsely marked and in ending abruptly with it." 

 ( Godwin- Austen.) 



Var. nana, Godivin-Austen. 



Alt/C(eus conicus, var. nanus, Godwin- Austen, Land & Freshw. Moll. 

 India, ii, 1914, p. 388, pi. 138, tigs. 6, 6 a, 6 b, 7. 



" It differs first in the much smaller size, next in the height of 

 spire, it is altogether smoother, no sign of any distant costulation 

 on the first whorl, which true conicus shows in some specimens." 

 ( Godivin- Austei).) 



Major diani. 2-6; alt. axis 1-5 mm. 



Hab. India : Jatinga Valley, Jhiri Valley, Hengdan Peak, and 

 Phulong, North Cachar (Godwin- Aiisfen). 



