240 



species of land and fresh-water Shells, from Nossi-Bé Island, N.W. Coast 

 of Madagascar. — Mr. Craven also read a paper on a collection of land 

 and fresh-water Shells, made during a short expedition to the Usambara 

 Country, in Eastern Africa, with descriptions of seven new species. — Mr. 

 F. Jeffrey Bell read some remarks in reference to certain statements made 

 by Mr. A. Agassiz in a paper on the synonymy of the Echini, communicated 

 to the Society at a previous meeting. — Mr. W. K. Parker, F. R. S., read 

 a paper on the structure of the skull in the Chameleons. — P. L. Sciate r, 

 Secretary. 



3. Linnean Society of London. 



March 18th. — The death of Prof . Thom. Bell was announced from 

 the chair. He was the oldest Fellow of the Society having been elected in 

 1815. He held the Presidential chair for many years and under his judicious 

 guidance the Society prospered. As a Zoologist be considerably advanced our 

 knowledge of the Fauna of the British Isles. — There was exhibited for Mr. 

 J. T. Carrington a male and female example of the Northern Stone Crab 

 [Lithodes arctica) which had lived in the Westminster Aquarium. The pecu- 

 liar asymmetry of the abdominal segments in the female was adverted to, and 

 from this and other reasons an affinity with the Hermit Crab [Pagurus] 

 pointed out. — A paper was read for Prof. Westwood »On a supposed Poly- 

 morphic Butterfly from India«. Discussing the peculiarities of the two sup- 

 posed species Papilio Castor and P. Pollux from Assam and Sylhet, he ad- 

 mits that the variations in size and markings of the sexes of the same species 

 of the genus Papilio is puzzling. While authors are sadly at variance with 

 regard to the two said species this is rendered more complicated by a gy- 

 nandromorphous specimen of P. Pollux in the collection of Mr. Semper of 

 Altona. Taking all the data into consideration Prof. Westwood is in favour; 

 — 1st of P. Castor being males of a species whose females have not been 

 discovered ; 2nd that the typical P. Pollux are females of which the male 

 with rounded hind wings having a diffused row of markings has yet to be 

 discovered ; and 3d that the coloured figures given by the author represent 

 the two sexes of a dimorphic form of the species. — J. M urie. 



lY. Personal-Notizen. 



N e e r I g. 



Died 14, April 1880 aet. 65. at Gosforth , Newcastle on Tyne Mr. 

 Thomas Atthey Assoc. Linnean Society. He was a local naturalist sprung 

 from the ranks having in early life been a coal miner ; but later on he kept a 

 shop, while in his leisure moments snatched from business he ardently pur- 

 sued natural history. He investigated the Diatomaceae and discovered se- 

 veral new genera and species. Along with Mr. Albany Hancock he contributed 

 to the Ann. & Mag. of Nat. Hist., and Tyneside Naturalists Field Club, the 

 palaeontology of the coal measures lately engaging his attention. 



London, 20. April 1880. J. Murie. 



Druck von Breitkopf und Härtel in Leipzig. 



