70 COLLINGE : GENERATIVE ANATOMY OF AMALIA MARGINATA. 



ON THE GENERATIVE ANATOMY OF 



AMALIA MARGINATA, DRAP., AND SOME REMARKS 



UPON THE GENUS. 



By WALTER E. COLLINGE, 



Demonstrator of Zoology and Comparative Anatomy, 

 Mason College, Birmingham. 



I am indebted to the kindness of Lieut. -Colonel G. S. Parry for 

 a series of examples of Anialia collected by him in Tenerife. They 

 are all in beautiful condition. I am therefore able to give an 

 account of the animal and the anatomy of its generative system 

 in some detail. The Amalia which has generally been accredited to 

 Tenerife is the Umax (Amalia) cariiiala, d' Orb., who in 1839 

 described and figured tin's species. 1 As has been pointed out by 

 Cockerell,' 2 the figures "suggest at first sight some jParmacel/a." 



The name cari?iata being preoccupied, Bourguignat 3 re-named 

 the species from d' Orbigny's figures, terming it Limax polyptyclus — 

 an eminently scientific and simple method of species making, and 

 thoroughly characteristic of the Bourguignat school ! 



Mabille in 1868 proposed the new genus Lallemantia, in which 

 he classed it. Later malacologists, content with external appear- 

 ances, only removed the species to the genus Amalia, classing it as 

 a variety or synonym of gagates. 



D' Orbigny states that it is rare and inhabits the mountains near 

 Santa Cruz. I think there can be no doubt but that the slug of 

 d'Orbigny figured, and upon whose figures Bourguignat exercised his 

 ingenious imagination, is the one which Lieut. -Colonel G. S. Parry 

 has recently collected, and which I am here describing. 



Amalia marginata, Drap. 



Animal (in alcohol). The whole of the dorsal region of the 

 body is a bluish sepia, shading to an ochreous colour on the sides, 

 which are minutely peppered with fine sepia and grey points. Head 

 and tentacles lighter. The body is more attenuated than gagates and 

 the mantle is oval with a circular cap-like protuberance in the 



1 Moll. Canar., 1839, p. 47, pi. iii., figs. 4 to 8. 



- Ann. Mag. N. H., 1891, p. 335. 



:i Am£nit£s Malacologiques, T. ii., p. 148. 



