TITLES. Ins. 17 
255. Dixey, F. A. Mimetic attraction. Tr. ent. Soc. London, 189V, 
pp. 317-332, pi. vii. [Lepidoptera.] 
Summary in J. R. Micr. Soc. 1898, p. 191. 
256. . Mr. Merrifield’s experiments on the relation of temperature to 
variation. Nature, lvii, pp. 184-188. 
257. Dixon, G. B. Supposed causes of variation. Tr. Leicester Soc. iv, 
pp. 374-385. 
258. Dognin, P. Hdtdroc&res sud-Amdricains. Ann. Soc. ent. Belgique, 
1897, pp. 22-31. [Lepidoptera.] 
259. . Hdtdrocdres nouveaux do l’Amdrique du Sud. T. c. pp. 243- 
250. [Lepidoptera.] 
260. . Hdtdrocdrcs nouveaux do Loja et environs (lilquatcur). T. c. 
pp. 407-420. [lepidoptera.] 
261. Dolbear, A. E. The cricket as a thermometer. Amer. Natural. 
1897, p. 970. [Orthoptera.] 
262. Dolles. Der Nutzen der Braconiden im forstlichen Haushalte. 
Forstl. Zeitschr. Munchen, vi, pp. 1-7. [Hymenoptera.] 
263. . Stroifzug im Gebiete von Feinden unserer schfidlichen Wald- 
insekten. T. c. pp. 258-270. 
264. Dominique, J. Notes Orthopt&ologiques. Bull. Soc. ouest France, 
1897, pp. 265-271. 
265. . Contributions k la connaissance et au catalogue des Chrysides 
de la Loire-infdrieure. T. c. pp. 129-144. [Hymenoptera.] 
266. Druce, H. Descriptions of some new species of Heterocera from 
Tropical America. Ann. Nat. Hist, xx, pp. 299-305. [Lepidoptera.] 
. [See also Godman & Salvin (416).] 
267. Druce, H. H. Descriptions of four new species of Lyceenidce from 
the Eastern Archipelago. Ann. Nat. Hist. 1897, xix, pp. 13-15. 
[Lepidoptera.] 
268. Dubois, R. Physiological light. Smithson. Rep. 1895, pp. 413-431, 
pis. xxiii-xxvi. 
269. Duboscq, O. Sur le systdme nerveux sensitif des Trachdates. Arch, 
zool. exp. (3), v, pp. 401-416, pi. xix. [Orthoptera.] 
270. Ducke, A. Aufzahlung der bei Triest im Jahre 1896 von mir 
gesammelten Osmia-Axtexi und Beschreibung einer neuen Art. Ent. 
Nachr. xxiii, pp. 38-43. [Hymenoptera.] 
271. Dudgeon, G. C. A catalogue of the Heterocera of Sikhim and 
Bhutan. With notes by H. J. Elwes and additions by Sir George 
F. Hampson. J. Bombay Soc. ix, pp. 239-251, 406-419, etc. 
[Lepidoptera.] 
272. Dunning, S. N. Notes on Philanthus. Ent. News Philad. 1897, 
pp. 68-71. [Ilymenopterai] 
273. . A new species of Protandrena , Ckll. Canad. Ent. xxix, 
p. 47. [Hymenoptera. ] 
274. . Another new species of Protandrena , Ckll. T. c. p. 264. 
Durrant, J. H. [See Lord Walsingham & J. H. Durrant (1142).] 
275. Dyar, H. G. A generic revision of the Ptilodontidce and Melalopliidce. 
Tr. Amer. ent. Soc. xxiv, pp. 1-20. [Lepidoptera.] 
276. . A generic revision of the Hypogymnidce ( Liparidce ). Canad. 
Ent. xxix, pp. 12-16. [Lepidoptera.] 
1897. [Vol. xxxiv.] e 2 
