MOLLUSCA OF INDIA. . 113 



conditions govern and direct early development (see p. 102), where, 

 if I am correct, an expansion of the free oviduct indicates, when 

 nature requires it, a change of growth in the ova. 



{Continued from Vol. I. p. 243, subgenus Del'hayiia.) 



Genus Maki-3ella. (See Plates LVII. & LXII.) 



Maricella, Gray, Cat. Pulmonata in Brit. Mus. pt, i. p. 62 (1855). 

 Tennentia, Humbert, Kev. et Mag. Zool. p. 427 (1862). 

 Vega, Westerlund, Vega-Exped. vol. i. p. 188, pi. ii. (1887). 

 Dekhania, Godwin-Austen, Laud & Freshw. Moll. Ind., Pt. VI. 

 p. 242, Pis. LVII. & LXII. (April 1888). 



Type species : — 



Maei^lla dussumieei, Gray. (Plate XCIII. figs. 1-1 c, 2-2 c.) 



Maricella dussiwiieri, Gray, Cat. Pul. B. M. p. 63 (1855) ; Clessin, 

 Nomen. Helic. p. 33. 



Mr. Cockerfill has shown *, and I think on indisputable grounds, 

 that Mahe, the habitat assigned to it, is not the island in the 

 Seychelles group, but the French possession on the S.W. coast of 

 Peninsular India, near Tellicherry, about 280 miles north of Cape 

 Comorin . 



Cockerell says : — " It is tolerably evident that we have all along 

 been making a stupid blunder about the type locality of this slug. 

 The original specimen in the British Museum is labelled simply as 

 ' Mahe ' by Valenciennes. This must be Mahe the French colony 

 on the south-east f coast of India, not far from the Travancore 

 Hills, whence came Marialla [Delchania^ heddomei (G.-Aust.), which 

 is to all appearances the same animal. I had been provisionally 

 keeping heddomei as a subspecies, thinking that the Seychelles 

 type (as it was supposed to be) dussumieri might, when examined 

 anatomically, show some distinctive characters. But since dus- 

 sumieri is from Mahe, India, it is doubtless the same as heddomei, 

 which must sink as a synonym." 



Some specimens of this genus have again come into my hands 

 through Mr. W. T. Blanford, who obtained them from Mr. Daly, of 

 the Balur Estate, Kadar District, Mysore ; and although the genus 

 has been treated of quite lately by Mr. AVilfred M. Webb in the 

 ' Proceedings of the Malacological Society ' (vol. iii. pt. 3, p. 147, 

 Dec. 1898), I have made a re-examination of the animal, and give 

 drawings of it, particularly the generative organs, which I did not 

 give in 1888, with some remarks on other parts of the anatomy not 

 referred to by Mr. Webb. 



The largest animal measured 50 mm. in spirit, was of a very strong 



* ' The Nautilus,' vol. xii. no. 1, p. 9 (May 1898). 

 1" A mistake for south-west. 



