1892.] MR. R. J. L. GUPPY ON BULIMUS OBLONGUS. 271 



is quite obvious that neither of the names proposed by Lieutenant 

 Tarnovski can be applied to the birdin question. I therefore propose 

 to call it Phasianus tarnovskii, after its discoverer. 



It is quite possible that Phasianus zera/shanicus is distinct from 

 P. principalis, but its distinctness can scarcely be fully admitted 

 without a comparison of specimens. According to Lieutenant Tar- 

 novski, P. zerafshanicus has only recently made its appearance iu 

 the upper valley of theZarafshan. He writes: — "Mr. Klossovski,who 

 had resided in Katta-Koorgan for thirteen years, informed me that 

 Pheasants had made their appearance in the district of Katta-Koor- 

 gan (where we were shooting) about 1883, and that they had 

 immigrated from the Bokharian dominions, probably from the Kara- 

 Kool lakes and reeds (the Zarafshan does not reach the Amoo-Daria, 

 but is lost in the sands near Kara-Kool), whence they were driven 

 forth by the invasion of the Kisii Koom sands, which gradually 

 bury the westeru part of Bokhara under their hills." 



Lieutenant Tarnovski further adds that " the Pheasant of the 

 Zarafshan has a mode of life totally differing from its other Asiatic 

 brethren, owing to the high state of cultivation of the Zarafshan 

 valley ; it breeds and nests iu the reedy swamps and marshes bordering 

 on this stream, and takes its food from the neighbouring fields and 

 gardens." 



3. Note on Bulimus oblongus. 

 By R. J. Lechmere Guppy, C.M.Z.S. 



[Received March 19, 1892.] 



The specimens of the anatomy of Bulimus oblongus which I ex- 

 hibit may have some interest for Fellows of this Society. 



Li my paper on the Mollusca of Trinidad published iu the ' Annals 

 and Magazine of Natural History' for January 1866 (ser. 3, 

 vol. xvii. p. 48), I mentioned some pecuharities of the structure of 

 this moUusk, which had been figured by d'Orbigny in his ' Voyage 

 dans I'Amerique Meridionale.' The tentacular appendages of the 

 head call to mind the Cephalopoda, and the jaw in two horny portions 

 strengthens the analogy. The specimens now shown are : — (1) the 

 jaw preserved iu glycerine, (2) the anterior portion of the animal in 

 spirit, (3) the dental membrane in Canada balsam, (4) the shell and 

 egg. These are all probably well known. 1 have had the pleasure 

 on more than one occasion of presenting living examples of this fine 

 species to the Gardens of the Society ; but, owing to its habit of 

 burrowing, I fear few of the visitors have had the opportunity of 

 seeing the creature in motion. 



I take the opportunity of mentioning another fact concerning this 

 moUusk which may possibly be new. The family Helicidse, to which 

 Bulimus oblongus belongs, is' generally considered to have the sexes 

 united, nevertheless requiring the congress of two individuals for 

 reproduction. I am not able to assert that Bulimus oblongus is 



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