180 Bibliographical Notice. 



Skull: basal length 21*6; basilar length 19"8; greatest 

 breadth 13'8 ; nasals 10'4x3"2; interorbital breadth 4'3; 

 breadth of brain-case on squamosals 11"4; interparietal 2'8 x 

 89 ; palate length from henselion 11*5; diastema ITT ; palatal 

 foramina 4*5x2; length of upper molar series 3'7. 



Additional measurements and averages are given by Allen 

 and Chapman (/. c). 



Hah. Jalapa, Mexico. 



Type B. M. no. 97. 9. 9. 30. Original number 1059. 

 Collected by Mr. F. M. Chapman, March 31, 1S97. 



BIBLIOGRAPHICAL NOTICE. 



Land and Freshwater MoUasea of India, includinf/ South Arabia, 

 Baluchistan, Afghanistan, Kashmir, Nepal, Burmah, Peju, 

 Tenasserim, Malay Peninsula, Ceylon, and other Islands of the 

 Indian Ocean. Vol. II., Part VII. By Lieut.-Coloael H. H. 

 Godwin- Austen, F.R.S., F.G.S., F.Z.S., &c. 



Volume I. of this work, consisting of 266 pages and 62 plates, was 

 commenced in 1S82 and completed in 1888. The present Park VII. 

 (the first of Vol. II.) was issued last October, and contains 45 pages 

 of text accompanied by 7 plates. 



As indicated by its title, this work is mainly devoted to the 

 subject of Indian malacology, but occasionally we are startled by 

 the sudden appearance of a page or two dealing with molluscs from 

 very remote parts of the world. In the first volume, for example, 

 the British Geomnlacus maculosus is discussed, a new species of 

 Helicarion from Australia, and a new Diplomniatina from Trinidad, 

 W.I., are described, and a new subgenus of Helicarion (Africarion) 

 is founded for the reception of certain African forms. In the part 

 before us a new subgenus oi Cyclophorus {Natalia *) is described, for 

 the reception of the well-known C. Wahlhergi of South Africa. It 

 is as well to call attention to this introduction of extraneous 

 matter, so that writers engaged upon the fauna of Greenland, 

 Timbuctoo, or any other part of the world may be on the alert. 



About 17 of the 45 pages are reprints of the author's descriptions 

 which have appeared in the ' Proceedings of the Zoological Society ' 

 or are quotations from the works of other writers. It is very useful 

 to have these descriptions reproduced, as they are accompanied by 

 figures, not having been illustrated previously. The genera treated 

 of are Alycceus, Diplommatina f, Cyclophorus (subgenera Natalia 

 and Cyclohelix), Otopoma, and Pupina. Only two new species are 

 described, and they belong to the last-named genus. The anato- 

 mical part of this work is very slight, being restricted to an account 

 of the position of "the male organ" in the new subgenus Natalia 



* Used by Gray in 1840 in Echinoderma. 



t D. concinna, p. 15. This name was preoccupied bj H. Adama 

 twenty-five years ago. 



