THE GENERAL SUBJECT. 
Ins. 13 
[ScuDDER, S. H.] Problems in Entomology. An Address as President 
of the Entomological Club of the American Association for the 
Advancement of Science. P. Am. Ass. 1880, pp. 609-615. [Cf. Zool. 
Pec. xvii. Ins. p. 8.] 
Points out how much yet remains to be done in the investigation of the 
embryology, morphology, and anatomy of insects. 
Semper, K. The Natural Conditions of Existence, as they affect 
Animal Life. London : 1881, 8vo, pp. xvi. & 472. 
Contains various matter relating to insects, but little original. 
Snellen von Vollenhoven, S. C. See Van der Wulp. 
Spedizione Italiana neir Africa Equatoriale. Risultate Zoologici. 
Ann. Mus. Genov, xvi. pp. 200-298. 
Includes new species of Coleoptera, by Gestro ; Orthoptera, by Bur 
mans; Odonata, by Selys-Longchamps ; Hyrnenoptera^ by Gribodo ; For- 
micidcBj by Emery ; and Hemiptera^ by Lethierry. 
Targioni-Tozzetti, a. Relazione intorno ai lavori della P. Stazione 
di Entomologia agraria di Firenze per gli anni 1877-78. Parte 
Scientifica. Aunali di Aggricoltura, 1881, No. 34. Poma: 1881, 8vo, 
pp. 194, pis. 3, & figs. 
Thomson, G. M. The Flowering Plants of New Zealand, and their 
relation to the Insect Fauna. Tr. Bot. Soc. Edinb. xiv. pp. 91-105. 
Diptera appear to take the place of Hymenoptera in New Zealand, in 
fertilizing flowers. 
Trelease, W. On the Fertilization of Calamintha nepeta. Am. Nat. 
XV. pp. 11-15, woodcuts. 
The purple spots at the mouth of the corolla tube attract insects, but 
those which are too small to assist in the conveyance of pollen are pre- 
vented from entering by dense ridges of stiff hairs on each side. 
Triciit, — Van. Nos Insectes. Deux Causeries. 2 edn. Namur: 
1881, 12mo, pp. 152. 
Van der Wulp, F. M. S. C. Snellen von Volleuhoven als Entomolog 
geschetst. Tijdschr. Ent. xxiv. pp. Ixxxix.-cviii., portrait. 
An obituary notice of Vollenhoven, with a complete list of his publi- 
cations. 
Walker, J. J. Entomological Collecting on a Voyage to the Pacific* 
Ent. M. M. xviii. pp. 81-86. 
Notes on insects of various orders collected or observed in the Azores, 
Straits of Magellan, Chili and Peru, &c. 
Wallengren, H. D. j. Et forsok att bestamma en del af de utaf H. 
Strom, beskrifna Norska Insecter. Forh. Selsk. Chr. 1880, No. 2, 
pp. 31. 
Relates to Lepidoptera and Neuroptera. Entirely of bibliographical 
interest. 
Westwood, J. 0. See Oates, F. 
Weyenbergh, D. H. Sobre la Paedogenesis. Nat. Arg. i. pp. 105, & 
214-218. 
