14 G. ^exill— List of the Mollusca of [No. 1, 



III. — List of til e Mollusca hrought hack hy Dr. J. A]srT)EESOT^yrow^ Yunnan 

 and Upper Burma, loith Descriptions of new Species. — By G. Neyill, 



a M. z. s. 



The following is a list of the mollusca collected by Dr. Anderson on 

 the two Yunnan Expeditions of 1868 and 1874, with descriptions of the new 

 s])ecies and varieties ; the greater part of the more remarkable novelties 

 from the First Expedition have been already described by Mr. W. T. Blan- 

 ford, in the P. Z. S. for 1869. 



I prepared this list for Dr. Anderson's work on the zoology of Yunnan 

 and Upper Burma about a year ago ; since then several of my identifications 

 have been noted by other writers. M. Morelet especially, in a most excel- 

 lent account of the mollusca of " Indo-Chine," published as the 4th Livr. 

 of the Ser. Conchil. in April 1875, with figures of the new and more impor- 

 tant species, entirely confirms my views as to the probable identity of 

 our common PalucUna Bengalensis with species described from Sumatra, 

 8iam, &c., as detailed further on ; he records the occurrence in " Indo- 

 Chine" of our Indian or Burmese Helix capitiuni, Pythia plicata, Blanor- 

 his exustus, P. compressus (which he identifies with P. Tondanensis from 

 Java and P. saigonensis), CyclopJiorus ftolguratus, C. Bensoni (this identifi- 

 cation I very much doubt), Ampullaria glolosa and A. conica, Paludina 

 Bengalensis with its srdiViQij^poly gramma, P. ampulliformis ( = P. lecythis 

 Bens., in my opinion doubtfully distinct from Gray's P. Ghinensis), P. 

 prcemorsa, Bithinia goniomp)lialus ( = P. iravadica), Stenothyra monilifera, 

 Melania Touranensis (which he, no doubt correctly, believes to be only a 

 variety of our M. variabilis), and J£ spinulosa. He also anticipates in 

 publication my views of the correct determination of the very diflacult 

 group of Neritina (Dostia) violacea : he unites into two species the three 

 forms described and figured in this Journal for 1868 from Burma by Mr. 

 W. T. Blanford, viz., AT. violacea, Gm. ( = crepidularia, Lam.) with N. 

 drepessa, Bens., as a variety, and N. cornucopia, Bens., which he considers 

 as specifically quite distinct, in which I decidedly agree with him, though we 

 are both in opposition in this matter to the greatest living authority on the 

 genus. Dr. E. von Martens, who, in his recent monograph of Neritina, for 

 Kiister's Ed. Conch. Cabinet, unites all three forms into one. 



The late Prof. Deshayes in Vol. X of the Nouv. Archives du Museum 

 (1876) gives a list of mollusca, collected lately in Cambodia by Dr. Jullien, 

 in which many interesting forms, allied to our Indian genera, are fully 

 described and figured; unfortunately, unlike M. Morelet, he entirely 

 ignores the neighbouring Indian and Burmese regions and seeks for allied 

 forms in South America. As well as I can judge without actual inspection 



