r 287 ] 



VII. Report on the Mollnsca collected by the British Ornithologists Union Expedition 

 and the Wollaston Expedition in Dutch New Guinea. By Guy C. Robson, B.A* 



[Received January 1, 1914 ; Eead March 17, 1914.] 



(Plates XXXII. & XXXIII.f and Text-figures 5-11.) 



Index. 



Page 



Structure or Morphology .... Antinous, gen. n. Anatomy 290-292 



Chronos, gen. n. Anatomy 292-296 



Papuina liivus Lesson. Anatomy 296-297 



Papuina wollastoni, sp. n. Anatomy 297-300 



Physiology Albumen gland, variation in development of . . 296 



Ethology Chronos sublimis, found at great altitude .... 288 



Geographical Zoology Remarks on 288 



Systematic Antinous anthropopliagorum, gen. et sp. n. . . 290 



Chronos sublimis, gen. et sp. n 292 



Papuina wollastoni, sp. n 297 



Papuina lituiis, distinguished from P. tau- 



mantias 296 



Variation and ./Etiology .... Papuina lituus and P. taumantias, slight 

 differences in conchologieal characters com- 

 pared with differences in the genitalia .... 297 

 Papuina ivoUastoni, conchologieal resemblance 

 to a DendrotrocJiKS 208 



J. HE collection of Mollusca obtained by the Expeditions, though it contains some new 

 and very interesting forms, is not large enough to necessitate any attempt to modify 

 existing opinions on the zoo-geographical relationships of New Guinea. One or two 

 observations of a general nature are, however, necessary by way of introduction. 



Thanks to the work of Tapparone Canefri, Hedley, and E. A. Smith, we are in 

 possession of a good amount of information upon the molluscan shells of the better 

 known parts of New Guinea. The two workers first named have also, with a few 

 others, published some account of the anatomy of these forms. In 1886-7 MoUendorf 

 and in 1895 Hedley published papers upon the general relationships of the molluscan 

 fauna of the main and adjacent islands. Since that date no comprehensive work upon 

 this fauna or its relationships appears to have been published. MoUendorf attempted 



* Communicated by W. R. OoiLviE-GRAifT, F.Z.S., and published by permission of the Trustees of the 

 British Museum. 



t For explanation of the Plates, see pp. 303-306. 



VOL. XX. — VAiiT VII. No. 1. — May, 1914. 2 k 



