1897] SOME NEW BOOKS 425 
at a glance what forms have been described from different parts of the 
main area. 
En passant we may note two accidental mistakes—the first that a 
number of rodents from Mashonaland, described by Mr de Winton in 
1896, have been wrongly credited to the present reviewer, and the 
second that by a confusion of two similar names, the marsupial 
Thylamys carri, of Trinidad, appears as a rodent in the genus 
Tylomys. 
We may express a hope, in conclusion, that this invaluable list 
will not be allowed to come to an end without having a good index 
appended to it, at least of the genera names and their synonyms (with 
page, not number, references), as this will enormously increase the 
facility of its use, and will make it really worthy of its claim to be 
Editio completa. 3 Aa ip 
PARASITIC FLIES 
REVISION OF THE TACHINIDAE OF AMERICA NortH OF Mexico. By D. W. Coquillett. 
Pp. 154. Washington. 1897. (U.S. Department of Agriculture, Division of 
Entomology. Technical Series, No. 7.) 
LIKE most of the publications of the admirable Washington depart- 
ment, this work will be welcomed both by the systematic student and 
the practical farmer. The flies described are parasitic on various 
insects, usually on the caterpillars of moths, hence they play an 
important part in keeping the numbers of injurious species within 
bounds. The work contains tables of the parasites with their hosts 
and the hosts with their parasites, together with synoptical tables, 
and full descriptions of all the Nearctic genera of species. As most of 
the genera are identical with those of Europe, the monograph should 
be valuable to dipterologists generally. We notice with regret that 
there are no illustrations. In the study of so difficult a family, a few 
figures of structural details would be of great help to the beginner. 
FURTHER LITERATURE RECEIVED 
Das Kleine Botanische Practicum, E. Strasburger, ed. 3: Gustav Fischer. Bau und 
Leben unserer Waldbiume, K. Biisgen: Gustav Fischer. The Span of Gestation, J. 
Beard : Gustav Fischer. Wild Traits in Tame Animals, L. Robinson: Blackwood. La 
Face de la Terre, French Trans. of Suess, Das Antlitz der Erde, by E. de Margerie, vol. 
i.: Colin, Paris. The Living Substance as such and as Organism, Mrs E. A. Andrews : 
Ginn, Boston. Cheltenham as a Holiday Resort, 8. S. Buckman ; Norman, Sawyer & 
Co ; Cheltenham. 
On some European Slugs of genus Arion, and on two new species of Parmarion, 
W. E. Collinge: Proc. Zool. Soc. On Flow-Structure in an Igneous Dyke, and on Augite- 
diorites, by T. H. Holland: Rec. Geol. Surv. India. A Dictionary of the Call Notes of 
British Birds, C. L. Hett. Field Columbian Museum, Papuan Crania, G. A. Dorsey. 
Ratzel’s History of Mankind, pts. 21, 22: Macmillan. U.S. Dept. Agriculture, 
N. Amer. Fauna, No. 13. Concilium Bibliographicum, cards relating to Nat. Sci. 
Amer. Geol., Nov.; Amer. Journ. Sci., Nov.; Amer. Nat., Nov.; Botan. Gaz., Oct.; 
Feuille des Jeunes Nat., Noy.; Irish Nat., Nov.; Journ. School Geogr., Oct.; Literary 
Digest, Oct. 16, 23, 30, Nov. 6; Naturae Novit., Oct.; Naturalist, Nov.; Nature, Oct. 
21, 28, Nov. 4, 11, 18; Naturen, Oct.; Photogram, Nov.; Psychol. Rev., Nov.; Rivista 
Quindicinale di Psichologia, vol. i., fasc. 9,11 (Sept., Oct.) ; Revue Scientifique, Oct. 16, 
23, 30, Nov. 6, 13; Science, Oct. 8, 15, 22, 29, Nov. 5 ; Scientific American, Oct. 9, 16, 
23, 30, Nov. 6; Scot. Geogr. Mag., Nov.; Scot. Med. and Surg. Journ., Nov.; Vic- 
torian Nat., Sept., Oct.; Westminster Rev., Nov. 
2G 
