608 General Notes. [June, 
Latzel has — upon them, especially his figures of the 
mouth-part 
For the yi e Latzel adopts the term Diplopoda of 
Blainville and Gervais; the latter term is a better one’ if it has pri- 
ority, as it is shorter and more expressive, but the author does not 
give his reasons for using it in preference to the commoner name. 
However, he regards the Chilognatha as the second suborder of 
Diplopoda, proposing two new suborders, first the Pselaphognatha 
(for the Polyxenidze), and third and lastly the Colobognatha for 
the Polyzonidz, all the other diplopods being placed ‘under the 
Chilognatha. 
The Lysiopetalide, as limited by American authors, is dismem- 
bered, all except a TIF being referred to the family Chor- 
deumi a, whereas he should regard the two groups as sub-fami- 
lies of Newport's Bec Lysiopetalinaz, established in 1844. The 
American genera Scoterpes, and Zygonopus are considered as 
identical, a view we at first entertained, but afterwards abandoned, 
so great is the difference in the sixth pair of legs and the male 
genital armature. Trichopetalum is regarded as identical with 
Craspedosoma and perhaps partly with Chordeuma. 
TROUESSART AND Mecnin’s Sarcorptip Mires.—The first part 
- Of Trouessart’s “ Les sarcoptides plumicoles ou Analgésinés,” em- 
braces an account of Pterolichus and its allies, worked out with 
the aid of M. P. Megnin. These mites live on the plumage of 
birds, feeding upon the oily substance excreted by the skin, and 
not annoying the birds themselves ; they are not then true para- 
sites, but simply commensals. Several new genera and many new 
species are described, and the present part is illustrated by about 
twenty-five wood-cuts. About 1 150 species will be described. 
_ They have been taken from birds brought from different parts of 
the world, and it has been found that the same species of the sub- 
family lives on all species of birds belonging to one family. They 
are exposed to much variation, particularly Fregana anatina. 
The great variability of this species is readily explained by the 
parasite habits and by special condition of the medium, of food, 
habitat and climate. The work promises to be of much value to 
American students, for the subject here is almost unworked. 
EntomotocicaL News.—The twelfth volume of the Transac- 
tion of the American Entomological Society opens with the 
second part of the late Dr. LeConte’s Short studies of North 
Ta Ara Coleoptera ; and is followed by Dr. Horn’s Study of 
era of Elateridæ ; Mr. Williston’s Notes on the North 
erlai Aside Bue 1); $ oh oe B. Smith’s Notes on the 
- systematic some North American Lepidoptera, re- 
te ae Ayri oie en Peele aia Monarchie. Von Dr. Robert 
eo 2 owed Dies p oe d Diplopoden. Wien, 1884. Alfred 
