354 The American Naturatst. [April, 
PLATHELMINTHES. 
` PACKARD, A. S.—The Cave Fauna of North America. Mem. 
Nat. Acad. Sci, IV., 1889—Describes Vortex (?) cavicolus 
and Dendrocelum percecum. 
NEMATODA. 
Buttock, Epwarp A.—Ova of Trichocephalus dispar in the 
liver of Rat. Am. Mo. Micro. Jour., X., p. 193, 1889. 
Mark, E. L.—Trichine in Swine. Ann. Rep. Mass. State 
Board of Health for 1888, p. 113. 1889—Results of examina- 
tions of 4186 hogs. 
ANNELIDS. 
Wurman, C. O.—Some new factsabout the Hirudini. Jour. 
Morph., II., p. 586.—A preliminary paper largely devoted to 
sense organs. 
Cuaney, L. W.—Histology of the Earth-worm. Microscope, 
IX., p. 196. Plate. 1889.—Nothing new. 
BepparD, F. E.—Note upon the green cells in the integument 
of olosoma tenebrarum. Proc. Zool. Soc., London, 1889, p- 
51.—In foot-note gives notes on Cragin’s species of olosoma. 
PROSOPYGII. 
Strokes, A. C.—The Statoblasts of our Fresh-water Polyzoa. 
Microscope, IX., p. 257, 1889.—A popular account with keys to 
Statoblasts and to genera of fresh-water Polyzoa. 
Anprews, E. A.—Reproductive organ of Phascolosoma gouldi. 
Zool. Anzeiger, XII., p. 140, 1889——Reproductive organs fim- 
briated bands, running from nerve cord along posterior retractors. 
Attempts at artificial impregnation unsuccessful. 
MOLLUSCS. 
Pirspry, Henry A.—New and little known American Mol- 
luscs. Proc. Phila. Acad., 1889, p. 81, 3 Plates——Describes as 
new Holospira elizabethe from S. W. Mexico, Pacilozonites rein- 
ianus var. goodei from Bermuda, Bithynella e@equicostata from 
Florida, Amnicola peracuta from Texas, Spherium (Limsima) 
