1894.] Zoology. 345 
ZOOLOGY. 
The Cestodes of Herbivorous Animals.'—Dr. ©. W. Stiles 
and Albert Hassall have issued a well illustrated list of the adult tape 
worms of cattle, sheep and allied animals. In this work the authors 
have had the great assistance to be derived from studying many of the 
original types. From this paper we learn that the domestic cattle are 
infested by 8 adult cestodes, the goat by 2, the sheep by 11, etc. The 
new species described are Monezia oblongiceps from a South American 
Coassus, M. trigonophora from sheep, and M. planissima from sheep 
and cattle. In connection with each species is a good anatomical 
description. 
Cladoceran Crustacea.’—Prof. E. A. Brige, in the third of his 
“Notes on Cladocera,” enumerates 63 species of Cladocera as having 
been found in Wisconsin and Northern Michigan. A table is given 
showing the distribution of each species in the lakes explored, and four 
plates illustrate the new or little known forms enumerated. The new 
species are Moina affinis, Ceriodophina lacustris, Daphinia breviceps, 
Bunops (n. g. for Macrothrix serricaudata Daday and B. scutifrons 
nov.) Chydorus faviformis, Anchistropis minor, A most interesting 
comparison is made between the Cladoceran fauna of Wisconsin and 
various regions of Europe. 
Eyes of the Harvestmen.—Dr. Frederick Purcell has just 
issued an account of the eyes of the Phalangids’ which is rather dif- 
ficult to understand, on account of the absence of all illustrations. 
The Phalangids have two eyes which Purcell homologizes, without a 
doubt, with the median eyes of the scorpions. Like them, they are 
developed from three layers, the middle forming the inverted retina. 
The retinulæ each consist of five cells arranged in a circle and each 
retinular cell gives rise to a rhabdomere so that the rhabdom is five- 
‘parted and the longitudinal grooves on the outer surface of each 
thabdomere give it a star-like section. The retinal cells are pig- 
mented distally, the nucleus and nerve termination are in the proximal 
portions. Besides these there are club-shaped pigment cells in the dis- - 
T.S. Dept. Agric., Bureau of Annual Industry, Bulletin, 4, 1898. 
"Trans. Wise. Acad. Sci. Arts, 1X, 1893. 
*Ueber den Bau der Phalangiden Augen; Dissertation. Berlin, 1894. 
