260 General Notes. 
Professor Ernst Haeckel has published an abridgement of his recent 
monograph of the “Challenger” Radiolaria. It appears under the 
title“ Grundriss einer allgemeine Naturgeschichte der Radiolarian,” 
in a quarto volume of 266 pages, illustrated with 64 of the plates 
of the ‘“‘ Challenger” Report. The price is sixty marks. 
EcCHINODERMS.— The brothers Sarasin call attention (Zool. Anz., 
x. 674) to the powers possessed by Linckia multifora of repairing 
injuriés, and figure a specimen where an arm has budded at its 
extremity a new star fish with four new rays, but state that the 
madreporic body is not yet developed. 
Worms.—Beddard calls attention (Zvol. Anz., No. 268) to the 
so-calied prostrate glands of earth-worms, claiming that these organs 
in Pericheeta an the homologue of the atrium in other earth-worms. 
He also describes the reproductive organs of Monilogaster, which 
differ from those of other worms and resemble those of the limico- 
lous forms. He shows that Claparéde’s division of the Oligochætes 
is unnatural. 
Mammats.—August Fjelstrup describes (Zool. Anz., No. 269) the 
histology of the skin of the black fish, Globiocephalus melas, and 
incidentally states that Eschricht’s statement that the number of 
hairs about the lower jaw and nasal openings and their arrangement 
. may be used in identifying foetal Cetacea is erroneous, th 
varying with size and development. . 
ENTOMOLOGY! 
Tue Grass-Eatine Turips.—Attention is called by Dr. Lint- 
ner in his annual report (reviewed below) to “An Unknown Grass- 
Pest.” As the insect in question is one which I have had under 
observation for many years, I am able to give more definite infor- 
mation regarding it than is contained in Dr. Lintner’s report. 40 
fact, I feel a peculiar personal interest in the insect in question, as 
it was the first species upon which I made original observations ; 
and in a little work? published thirteen years ago I gave a bri 
account of it. : 
This grass-pest is exceedingly common and widespread. It is @ 
species of Thrips, which infests the stalk just above the upper 
1This department is edited by Professor J. H. Comstock, Cornell | 
University, Ithaca, N. Y., to whom communications, books for notice, 
etc., shou sent. i 
2 Notes on Entomology : A Syllabus of a Course of Lectures Deliveređ 
at the Cornell University. Ithaca, 1875. (In the second edition of this 
work the account cited was omitted.) 
