1877.] Upper Burma and Yunnan. 15 



of his types, he describes varieties of our Paludina Bengalensis as P. Cha- 

 langnensis and P. speciosa, a variety of our Melania variabilis as M. 

 Juliicni ; his TInio anceps is wonderfully close to some upj)er Burmese 

 varieties of U. Bonneaudi and should be compared with it ; his JJ. comptus 

 and XT. Grossei also require comparison with Burmese forms ; the former I 

 fear may prove identical with my TInio frag His ; his Baludina ohscurata is 

 also found in Penang, and I beKeve it has been previously described. 



A more accurate and ample report on the moUusca of the same region 

 is published in the Journal de ConchiL for October 1876 by MM. Crosse 

 and Fischer, in which the peculiar thick-shelled group of Paludina iSiam- 

 ensis is compared to that of the American sub-genus Melantho ; I would 

 call attention to the presence of a remarkable Bengal form of the same 

 group, the Paludina crassa of Hutton, which has the singular habit of 

 burying itself in closely packed groups of numerous individuals in the mud 

 at all seasons, as accurately recorded in Hutton's excellent original descrip- 

 tion ; our Cachar Solenaia soleniformis, Bens., so closely resembling South 

 American sj)ecies of Mycetopus, is also perhaps worthy of special remark in 

 connection with MM. Crosse and Fischer's comparison of the JJnionidcd of 

 " Indo-Chine" with those of South America ; I would also record here that 

 a si)ecies of Cjcinidia was lately discovered in the Rangoon river by Dr. 

 Hungerford ; it is the C. Bocourti of Brot (1. c, PL XII, fig. 6). M. Brot 

 seems to have most thoroughly and undeniably fixed the proj)er systematic 

 position of this interesting genus in the family BuccinidcB, instead of the 

 Melaniid(B, where it had hitherto been classed. 



I have given figures in the ' Eej)ort on the Zoology of Yunan,' which 

 Dr. Anderson is about to publish, of the following species described in this 

 paper, — Helicarion resplendens, Troclioviorpha percompressa, Glessula fusi- 

 formis, Bithynia turrita, Margarya melanoides, Paludina lielic if or mis, var., 

 Paludomus Burmanica, TInio fragilis, TI. Andersoniana, TI. Peddeni, and 

 two varieties of TI. Bonneaudi. 



Teochomoepha peecompeessa, Blf. 



Helix (Sivella) percomjoressa, Blf. P. Z. S. 1869, p. 448. 



The single type specimen in the Museum collection, found on the First 

 Expedition at Bhamo, remains unique. 



Nanina (Eotula) aeata, Blf. 



mnina (Eotulaj arata, Blf., P. Z. S. 1869, p. 448 (Bhamo). 

 Selix arata, Blf., Con. Indica, pi. 82, figs. 8 — 9. 



Very closely allied to H. anceps, Gld., but may, I think, be fairly sepa- 

 rated ; the spire is considerably higher, and the base of the body- whorl 

 more excavated round the umbilicus ; the keel at the periphery is less acute 



