. 1893. NOTES AND COMMENTS. 409 
SrvERAL contributions have lately been made to knowledge of 
the distribution of the mollusca. Mr. A. Everett has made extensive 
collections of land-shells in Borneo and the Philippine Islands, and 
these have been described by Mr. E. A. Smith (Foun. Linn. Soc. Zool., 
vol. xxiv., 1893, pp. 341-352, pl. xxv., and Anu. Mag. Nat. Hist. [6], 
vol. xi., 1893, Pp. 347-353, pl. xviii.).§ Mr. A. Abercrombie has col- 
lected 320 species of mollusca on the coast of Bombay, and 25 are 
determined to be new by Mr. Cosmo Melvill (Mem. and Proc. Manches- 
tev Lit. and Phil. Soc., vol. vii., 1893, pp. 17-66, pl. i.). A list of 205 
species from the Seychelles is also given by P. Dautzenberg (Bull. 
Soc. Zool. France, vol. xviii., 1893, pp. 78-84). 
Tue American Naturalist for April contains an article, by 
Professor E. D. Cope, on the Genealogy of Man. Professor Cope 
agrees with M. Topinard in believing that the Hominide descended 
directly from the lemurs, without the intervention of the Simiide. A 
special feature of this article isa plate showing the peculiar character 
of the grinding faces in the teeth of the Paleolithic men of Spy. 
Tue vexed question of Man and the Glacial Period is discussed 
over twenty pages of the American Geologist for March. Messrs. 
Shaler, Wright, Leverett, Upham, Claypole, Winchell, Hitchcock, 
and Putnam contribute to the discussion, which has apparently been 
induced by the publication of Professor Wright’s book, noticed in 
this Journal for February. There are also some papers on Glacial 
deposits; and those on Pleistocene Geology, read at the Ottawa 
meeting of the Geological Society of America, held in December, 
1892, also appear in print. 

One result of the recent excursion of the Geologists’ Associa- 
tion to Norfolk (to which we called attention in our April issue) was 
the finding in the Norwich Crag, at Bramerton, of a portion of an 
antler of Cervus sedgwicki ?, Falconer. The specimen was obtained 
by Mr. R. W. Hinton, and identified by Mr. E. T. Newton. 
Although named with a query, it belongs to a form hitherto not 
recognised out of the Cromer Forest Bed. 
Tue subject of chlorophyll in animals has just been discussed 
again in a lengthy article by Dr. E. L. Bouvier (Bull. Soc. Philom. 
Paris [8], vol. v., 1893, pp. 72-149). He admits that the green 
colouring matter is sometimes diffuse in Infusoria, but he considers 
that in the large majority of cases there is distinct proof that it occurs 
solely in symbiotic alge of the family Palmellaceee. He points out 
that these green specks are frequently found free in the water, and in 
that case they multiply by zoospores like the isolated alge of certain 
lichens. He has also observed the inoculation of organisms by these 
free chlorophyll-bearing cells. 
