TITLES. 
Ins. 63 
1167. Riffarth, H. Die Gattung Heliconius Latr. neu bearbeitet und 
Beschreibung neuer Formen. Fortsetzung. Berlin, ent. Zeitschr. xlvi, 
pp. 25-183. [Lepidoptera.] 
1168. Ritsema, C. Two new species of the genus Helota from British 
Bhotan. Notes Leyden Mus. xxii, pp. 27-32. [Goleoptera.] 
1169. -. Two new Malayan Lucanidce. Notes Leyden Mus. xxii, pp. 189 
-292. [Coleoptera.] 
1170. -. Pelargoderus sijthoffi n. sp. Op. cit. xxiii, p. 94. [ Coleo - 
ptera.\ 
1171. *Ritzema-Bos, J. Phytopathologisch Laboratorium Willie Com- 
melin Scholten; Yerslag over de inlichtingen, gegesen in 1899, 66 pp. 
Amsterdam. 
Summary Allg. Zeitschr. Ent. vi, p. 29. 
1172. Roberston, C. Some new Aculeate Hymenoptera from Illinois and 
Florida. Tr. Amer. ent. Soc. xxvii, pp. 195-204. 
1173. -. Some new or little known bees. Canad. Ent. xxxiii, pp. 229- 
231. [. Hymenoptera .] 
1174. -. Some new Diptera. T. c. pp. 284-286. 
1175. -. Homologies of the wing veins of Hymenoptera. Science xi, 
1900, pp. 112, 113. 
1176. Rogers, L. The relationship of the water-supply, water-logging, 
and the distribution of Anopheles mosquitos respectively to the preva¬ 
lence of malaria north of Calcutta. J. Asiat. Soc. Bengal lxix, 
pp. 457-476. [Diptera.] 
1177. Rohr, E. M. Stomatite erythemateuse et erysipele de la face chez 
le cheval, determines par les chenilles processionaires ( Bombyx ou 
Cnethocampa processionea ). C.R. Ass. franc, xxix, 2, pp. 803, 804. 
[Romanoff, N. M. Son Altesse imperiale. Me moires sur les 
Lepidopteres , vol. viii. Cf. Ragonot (1104).] 
1178. Ross, R. First progress report of the campaign against mosquitoes 
in Sierra Leone. Liverpool School trop. Medicine, Mem. v, pt. 1, 
24 pp. Liverpool, 1901. 
1179. -. Malaria and mosquitoes. P. R, Inst. Brit, xvi, pp. 295-313. 
1180. -. Malaria and mosquitoes. Nature lxiii, p. 440. 
Cf. Hutchins (660). 
1181. -, Annett, H. E. & Austen, E. E. Report of the malaria 
expedition with supplementary reports by Major G. M. Giles and 
R. Fielding-Ould. Liverpool School trop. Medicine, Mem. ir, 60 pp., 
5 pis., 4 maps. 
Published with Thompson Yates Lab. Rep. ii, 1900. Memoir hi, 
published in connection with Vol. iii, as “ Report of the malaria 
expedition to Nigeria,” also includes some information as to Ano¬ 
pheles. 
1182. Rossum, van. Parthenogenetische Kweckingen van bladwespen. 
Tijdschr. Ent. xliv, Verslag, pp. 24-33 and 57-66. [ Hymenoptera .] 
1183. Rostagno, F. Classificazione descrittiva dei Lepidopteri italiani. 
Boll. Soc. zool. Ital. ix, pp. 117-140, 222-239, and x, pp. 20-40, 
97-122. 
