1880.] W. T. VAnnfonl—Confrihitions to Indian Malacologi/. 185 



Hest name is Ilelicarion o£ Fcrussac (1822), but it is far from clear 

 that this is not generically distinct from both Macroclilamys and Ariophan- 

 ta. Tlie next term is Stenopus of Guilding (1828), applied to a West Indian 

 shell. This genus is evidently closely allied to the so-called Nanina : the 

 only distinction pointed out by H. and A. Adams* is that the sole in 

 Stenopus is narrower than the sides of the foot, but this does not hold good 

 universally.f A better difference is probably the position of the genital 

 orifice, which appears to be, in Stenopun, some distance behind the head, as 

 in Zowi'to, and not just behind the right tentacle, as in 'Nanina.'' After 

 Stenopus follow Macroclilamys of Benson (1832) and AriopTianta of Des- 

 moulins (1833), the first founded on S. indica (Benson nec. Pfr.), believ- 

 ed by many autliors to be the same as H. vitrinoides, the second founded 

 on S. Icevipes. The name Nanina was given in 1834. My impression is 

 that Ilelicarion, Macroclilamys, and Arioplianta will have to be accepted as 

 genera, Nanina being merely a synonym of Macroclilamys. 



I must apologize for taking up space by repeating what has been often 

 written before, but it is only right to explain why I now describe as Semi- 

 plecta, Muplecta, &c. shells allied to others formerly in these ' Contributions' 

 called Nanina. 



1. Aeiophakta immeeita. Plate III, Pig. 4, 'ia. 



Nanina (Ariophanta) imincrita, W. Blanf., J. A. S. B., 1870, xxxix. pt. 2, p. 17. 

 Hdix immerita, Pfr., Mon. Hoi. vii. p. 128 ; Hanley & Theobald, Conch. Ind. pi. 

 cl, fig. 7. 



This shell was originally described from an immature specimen, and 

 the same was figured in the ' Conchologia Indica.' Subsequently, Col. Bed- 

 dome obtained an adult shell from the same locality. South Canara. Of 

 this examj)le a figure is now given. The species only differs in sculjiture 

 from A. interrupta, which is found in various parts of Bengal^ and Orissa, 

 and has been procured by Col. Beddome as far south as the Golcondah 

 range of hills in Vizagapatam. The two forms replace each other in the 

 eastern and western parts of the Indian peninsula, precisely as do their 

 allies A. Icevipes and A. laidlayana. 



2. OXTTES STLTICOLA, Sp. nOV. 



Testa perforata, depressa, carinata, solidula, olroso-micans, epider- 

 mide crassiuscula oltecta fulva vel luteo-fusca, striis ohlig^uis incrementi 



* Gen. Eec. Mollusca, ii, p. 231. 



t H. (J. in Macrochlamys, some forms of which at least have the central tract nar- 

 rower than the lateral. 



X Amongst the localities given in the ' Hand-list of Mollusca in tho Indian 

 Museum,' part i. p. 19, is SLughar. This cannot bo Sinhgarh near Poona, in the Dec- 

 can. 



