346 Microscopical Society. 



22. Glandina monilifera, Pfr. Glan. testd/usi/ormi-ovatd, tenui, 

 pellucidd, regulariter costulato-striaid, costulis in medio anfractds 

 ultimi evanescentibus, fulvo -rosed, lineis remotis rufis pallide mar- 

 ginatis ornatd ; spird brevi, conicd ; suturd eleganter et confer- 

 tim granulosd ; anfractibus 7 planiusculis , ultimo f lo?igitudinis 

 subcequante, ventroso ; columelld vix arcuatd, basi abrupte trun- 

 catd; aperturd angustd, semiovali. 



Long. 29, diam. 14^ mill. 



Locality, mountains of Coban, Vera Cruz, Central America. (Coll. 

 Cuming.) 



A number of Birds' -skins from Australia were presented to the 

 Society by Jeremiah Olive, Esq. 



The Secretary exhibited to the Meeting a specimen of Sand Grouse, 

 Tyrrhaptes paradoxus, and five specimens of Mammals (all of which 

 were new to the Society's collection), from the Altai Mountains of 

 Siberia, viz. :— 



Meriones opimus, 



Aspalax Zokar, 



Mustela Altaica, 



Dipus Jaculus, 



Ml/ gale moschata. 



Mr. Gould laid upon the table a series of Terns, and characterized 

 a new species : — 



Sterna gracilis. St. summo capite et nuchd posterior e saturate 

 nigris ; lateribus nucJice et parte inferiore seriaceo-albis ; pectore 

 et abdomine leviter rosaceis ; rostro carnicolore, apice brunneo- 

 nigro ; pedibus aureo-fuscis. 

 Crown of the head, nape and back of the neck deep black ; sides 

 of the neck and all the under surface silky white, with a blush of rosy 

 red on the breast and abdomen ; back, wings and tail light grey, 

 becoming darker on the primaries ; irides brownish red ; bill flesh- 

 colour, except at the tip.- where it is washed with blackish brown ; 

 feet orange-red. 



Total length, 13 inches; bill, 21; wing, 8|^ ; tail, 6| ; tarsi, |. 

 Hab. The Houtmann's Abrolhos, off the western coast of Australia. 



MICROSCOPICAL SOCIETY. 



Oct. 15, 1845.— J. S. Bowerbank, Esq., F.R.S. &c., in the Chair. 



A paper by H. Deane, Esq., being a continuation of a former com- 

 munication, read at the last meeting of the Society, " On Fossil 

 Xanthidia found in Chalk," was read. 



After a brief summary of the former paper, in which he stated that 

 various species of the genus Xanthidium had been found by him in 

 the Folkstone chalk, Mr. Deane went on to state that this discovery, 

 by affording the means of isolating and mounting these bodies in 

 various ways for examination, suggested to him the possibility of 

 ascertaining their true nature. Their minuteness and other obvious 



i 



