154 ENTOMOLOGICAL NEWS. [April, 'l8 



L. — The biting powers of ants, 172, xviii, 141-7. Perkins, R. C. L. 

 — The synonymy of Andrena wilkella and its allies, with notes on 

 habits, as confirming specific distinction, 9, 1918. 36-9. Vemer, 

 S. P. — Ant pests and ant-eating animals, 556, xxi, 1575. 



Catalogue of the Hemiptera of America North of Mexico, ex- 

 cepting THE Aphididae, Coccidae AND Aleurodidae. By Edward P. 

 Van Duzee. University of California Pnblications, Technical Bul- 

 letins, vol. 2, pp. i-xiv and 1-902. (Paper $5.00, cloth $5.50. In the 

 East it may be had at the University of California Press, 280 Madison 

 Ave., New York.) 



Through this work, Mr. Van Duzee definitely assures his leadership 

 of present-day American hemipterists. I voice the mind of his col- 

 leagues in this country in congratulating him and ourselves on this 

 very valuable volume. For years to come this Catalogue will be the 

 basis of all work in Hemiptera for our fauna; all must refer back 

 to it to agree or to disagree. It is indispensable. 



The Catalogue is carried out on the excellent plan of Oshanin's 

 rcrseichniss dcr palaearktischcn Hcmipteren mit besonderer Bcriick- 

 sichtigung Ihrcr I'ertheilung tin Russischen Reichc* the only work 

 on a restricted fauna to which it may be compared. It differs from 

 Oshanin in that the references given are only such as are material. 

 Oshanin lists every reference. The classification follows Renter— 

 with mitigations. Horvath is guide in matters of nomenclature. Many 

 types are renovated or changed to agree with the author's interpre- 

 tation or understanding of the International Code. This question of 

 nomenclature and priority will always be with us to vex until we 

 come to an agreement as to what constitutes priority, so framed 

 that no room will be left for personal interpretation. We must also 

 put the casual biologists — the science teacher, the sanitarian, the physi- 

 cian — in a position where they shall not he able to dictate to the 

 specialist what his names must be, lest a change compel the casual 

 to learn perhaps three or four new names. 



The arrangement of the aquatic and semi-aquatic forms is not 

 satisfactory, but this must be the subject of more extended com- 

 ment. 



Generic and specific indices add greatly to the completeness and 

 usefulness of the work. 



The volume as a whole is surprisingly free from errors, except of 

 typography; a little more exacting editing would have done away 

 even with these few. 



* Beilage zum Ann. Mus. Zool. Acad. Imp. Sci. St. Petersb., Bd. 

 XI-XIV, pp. i-x.xiv. 1-1087, 1906-09; Bd. XI, XII, XIII, pp. i-xvi, 

 1-402, 1906-08; Bd. XV, pp. i-xvi, 1-217, 1910, 



