256 The American Naturalist. [March, 
Witson, E. B—The embryology of the earthworm in the 
system. Jour. Morph., III., p. 387, 1889 [1890]. 
BEDDARD, F. E—On the structure of a species of earthworm 
belonging to the genus Diachæta. Quart. Jour. Micros. Sci., 
XXXI, p. 159, 1890.—Structure of Diacheta windlet, from the 
Bermudas. 
Benuam, W. B.—An attempt to classify earthworms. Quart. 
Jour. Micros. Sci., XXXI., p. 201, 1890.—An extended paper 
upon anatomy and classification, giving family and generic char- 
acters and a list of all known species. 
Forses, S. A—On an American earthworm of the family 
Phreoryctide. Bull. Ill. Lab. Nat. Hist., III., p. 107, 1890.— 
Detailed description of species described in Am. Nat., XXIV., 
P- 477- 
——An American terrestrial leech. Bull. Ill. Lab. Nat. Hist., 
III., p. 119, 1890—Vide Am. Nart., XXIV., p. 646, 1890. 
Semiscolex terrestris. 
Wutson, E. B.—The origin of the mesoblast bands in Annelids. 
Jour. Morph., IV., p. 205, 1890. 
PROSOPYGII, 
Anprews, E. A——On a new American species of the remark- 
able animal Phoronis. Ann. and Mag. Nat. Hist., June, 1890, p. 
445.—Ph. architecta, from Beaufort, N.C. Vide Am. NAT., XXIV., 
p. 1083, 1890. 
Suiptey, A. E—On Phymosoma varians. Quart. Jour. Micros. 
Sci, XXXL., p. 1, 1890.—Extended study of the anatomy, based 
upon material fom the Bahamas. 
AxprEws, E. A.—Notes on the body-cavity liquid of Sipun- 
culus gouldii Pourtales. J. H. U. Circ., IX., 65, 1890. —Notes on 
character and chromatology. 
ROTATORIA, 
PELL, Arr.—Three new rotifers. Microscope, X., p. 143; 1890. 
—Mastigocerca bicuspis, Cathypna stokesii, Copeus americanus. 
No localities. 
