1880. ] Recent Literature. 121 
cape but not north, while Xera albifrons (copiosa Stm.), dotea 
irrorata, Limnoria lignorum and Leptochela algicola are found on 
both sides of that promontory. In the paper we notice that no 
species of Bopyride (with the exception of Cepon distortus) is 
reported south of Massachusetts. Dr. Leidy informs us that 
during the last summer he found Crangon vulgaris at Atlantic 
City, N. J., badly infested with another species —¥. S. K. 
CARCINOLOGICAL Papers oF PauL Mayer.'—We have here : 
two papers, one on the color changes of the Isopoda, the 
other descriptive of a new parasitic crustacean, Jve dalanoglossi, 
found, as the name indicates, in the body cavity of Balanoglossu. 
The sexes closely resemble each other, except that the males are 
much the smaller. The body is not segmented, but the five pairs 
of appendages which are present show their articulate character 
more plainly than in many Lerneans. The stomach is a blin 
sac, and the circulatory apparatus is wanting. The male adheres 
to the female near the genital opening. Dr. Mayer succeeded in 
rearing the Nauplius from eggs.— ¥. S. K. 
Herrick’s Entomostraca2—lIt is occasionally our lot to run 
across the productions of some naturalist, who, laboring under 
the impression that the scientific world has been at a standstill for 
a quarter of a century, deems it his duty to start it, and the re- 
sult is almost invariably the same, it retards the motion which, 
though inappreciable to his senses, nevertheless existed. é 
time necessary to unravel the confusion produced in synonymy by- 
such persons is enormous, and the amount of work required can 
only be appreciated by the systematist. 
Such a work is now before us and seems to demand some slight © 
attention. The author seems to have had very slight access 
to the literature of the subject, and to be entirely ignorant of any 
work done since the days of Baird’s British Entomostraca (1850), _ 
and Dana’s Crustacea of the U. S. Exploring Expedition (1852), the 
works of Claus, P. E. Miiller, G. O. Sars, Lilljeborg, Brady, Birge, 
etc., being unknown to him. The synonymy quoted, however, would — 
at first sight indicate an extensive acquaintance with the bibliog- _ 
raphy, but a slight examination shows that all references are 
taken second-hand and no credit is given; for instance, fifty-five 
references are quoted from Daphnia pulex verbatim (but owing to a ! 
careless proof reading not literatim) from Baird’s British En- : o 
tomostraca, and we would venture to say not one of them has 
been verified by our author, and what is more, his Pierian font, — 
baird’s work, is not quoted atall in connection with that species. 
Ve had Supposed that the classification of the lower crustacea 3 - 
' Mittheilungen aus der Zoologischen, Station zu Neap:l. 1 bd. 4 heft, page 
515-522 one plate, 1879. . ; eee 
the Microscopic Entomostrac, by C. L. Herrick, in the Seventh Annual Report of 
_ the Geological and Natural History Survey of Minnesota, 1879, pp. 81-123. } |, 20. 
VOL. XIV.—No, 11, 9 Ho la ee : 
