456 Bibliography. 



Description and Anatomy of a new subgenus of Planaria; J. Leidy. — p. 251. De- 

 scriptions of two new species of Planaria; J. Leidy. 



Annals and Magazine of Natural History, Vol. xx, No. 131. August. 

 On the Ventriculidse of the Chalk; J. T. Sra^.— Geographical Distribution and 

 Classification of Zoophytes; J. D. Dana. — Circulation in Insects; E. Blanchard. 



— Microscopic silicious Polycistina of Barbadoes ; R. H. Schornburgk. — Lit. and 

 Phil. Soc. of St. Andrews: Dr. Reid on the development of the Medusa.— Zoolog- 

 ical Society : J. E. Gray on the genera of the family Chitonidae. 



No. ]3'2. September. Fossil Botany and Zoology of the coal formation of Aus- 

 tralia ; F. M'Coy. — Note on the Teredo Norvegica, Xylophaga dorsalis, Limnoria 

 terebrans and Chelura terebrans; W. Thompson. — On the pliocene deposits of the 

 valley of the Thames at II ford; R. P. Cotton. — Additions to the Fauna of Ireland; 

 W. Thompson— On the Ventriculidae of the Chalk; J. T. Smith. —Zoological So- 

 ciety : Dr. Davy on the early generative power of the Goat; J. E. Gray on 

 some new genera and species of Asteriadae ; A. Adams on a new species ol 

 Fulgora ; A. White on some new Crustacea in the British Museum ; G. B. Sower- 

 by on several new species of JSpondylus. 



Bulletin (Monatsbericht) of the Royal Prussian Academy, Berlin. 

 October, 1846. On the new planet ; Encke. — On the anomalous form of the annual 

 temperature curve in North America; Dove. — On the larva condition and the met- 

 amorphosis of the Ophiura and Echinus; Mailer. — November. On the Carburets 

 of Iron ; Karsten. — Microscopic investigation of the Sirocco dust; Ehrenberg.-- 

 On the decomposition of water by Galvanism, and some allied topics ; Poggendorff. 

 On heat; H. Knoblauch.— On the position of the Cycadese in the Natural System; 

 Link. — December. On microscopic organisms from the volcanic ejections ol Ice- 

 land ; and also from a new case of Sirocco dust, from Genoa, May 16; Ehrenberg. 



— Microscopic Polycistina from Barbadoes; Ehrenberg. — January, 1c47. Reac- 

 tion of metallic zinc with mercurial solutions; H. Rose. — On promoting the de- 

 composition of water by galvanism; Poggendorff, — On the geographical distribution 

 of the Camel and Date Palm ; Ritter.— -On the deposit of stone salt at Stafsfurth, and 

 on the Boracite in salt beds; Karsten. — On the planet Astraea; Encke. — February. 

 On the movement of heat in the earth's strata of different geognostic character; 

 Dove. — A new insectivorous mammal, genus Rhyncocyon, from Mozambique 

 (R. Cirnei) ; Peters.—- Chemical investigaiion of silicates containing chlorine, sul- 

 phuric acid and carbonic acid; Whitney. — Microscopic siliceous Polycistina from 

 Barbadoes, &c ; Ehrenberg. --Discovery of Creatine in Urine ; Heintz.— Examin- 

 ation of the ashes of organic substances; H. Rose.— On the appearances presented 

 by polarized light, when the plane of polarization is suddenly turned ; Dove. 



Bulletin de la Societe Imperlale des Naturalistes de Moscou. Annee, 

 1846. 3pl.— No. I. Observations on Scandinavian Geology; E. EichwaUL— 

 Coleoptera Myrmecophila fennica; F. G. Mttklin.— Hylaeus quadricinctus, Fabr. , 

 E. Eversmann. — No. II. A systematic arrangement and economical review 

 of grape vines; Dr. F A. Kolenati.— Remarks on the collection of Russian 

 Coleoptera of Victor de Motschoulskv. — Treatise on the atomic theory; "• Lin- 



brodt.—Now or little known species of Russian Coleoptera; Dr. E. Eversmann. 

 Geological section of the environs of Moscow; M. Rouillier — Notes upon some 

 passages of the work of Murchison, Verneuil and Keyserling, on the Geology o 

 Russia and the Urals ; J. Auerbach and H. Frears.— On the beetles of the Aleutian 

 Islands and Sitka ; C. G. Mannerheim. .— Supplement to a memoir on the foliaceou 

 Musci of the Russian empire; A. Weinmann.— Meteorological observations mane 

 at the astronomical observatory of the Imperial University of Moscow; Spassky. 



