TITLES. 
Ins. 47 
725. Riley & Howard. Some Icerya and Vedalia notes. Ins. Life, iii, 
pp, 439-441, fig. 31. 
726. & . An interesting aquatic bug. Op. cit. iv, pp. 1 98-200. 
[ Rhynchota .] 
727. Riley, C. V.. & Marlatt, C. L. Wheat and grass saw-flies. 
T.c. pp. 168-179, [ Hymenoptera.~\ 
728. Rippon, R. H. F. leones Ornithopterorum : Pts. 3 & 4. London : 
1891. 
729. Ritrema, C. A new genus of Calmidrince. Notes Leyd. Mus. xiii, 
pp. 147-150. [ Coleoptera .] 
730. . A new species of RhynclmpJiorns. T. c. p. 151. [ Coleoptera .] 
731. . Two new species of the Lncanoid genus Cyclommatus , Parry. 
T. c. pp. 233-238. [Coleoptera. J 
732. . A new Oriental species of the Coleopterous genus Chelonarium. 
T. c. p. 249. 
733. . Two new species of the genus Helota from Borneo. T. c. 
pp. 197-201. [ Coleoptera .] 
734. . Further contributions to the knowledge of the Helota species 
of Burma. T. c. pp. 251-254. [ Coleoptera .] 
735. . Synopsis and alphabetical list of the described species of the 
Coleopterous genus IJelota. T. c. pp. 223-232. 
736. Rivers, J. J. New species of Scarabceidce. P. Cal. Ac. Sci. (2) iii, 
p. 97. [ Coleoptera .] 
737. . Description of the larva of Dascyllus davidsonii, Lee ., and a 
record of its life-history. T. c. pp. 93-96. [ Coleoptera .] 
738. Rober, J. Exotische Schmetterlinge. Theil n. 6 Lieferung. 
Schluss. pp. 225-284, pis. xliii-1. [ Lepidoptera.~\ 
Deals with Erycinidai and Lyccenidai , completing the work. 
739. Robertson, C. Descriptions of new species of North- American- 
Bees. Tr. Am. Eut. Soc. xviii, pp. 49-65. *[ Hymenoptera .] 
740. Roder, V. v. Dipteren gesammolt von Herrn F. Grabowsky ini 
der Bielshohle und neuen Baumann’shohle (Tropfsteinhohlen) in’ 
Harz. Ent. Nachr. xvii, p. 346. 
741. . Dipteren gesammelt in den Jahren 1868-1877 auf einer Reise' 
durch- Siid-Amerika von Alphons Stiibel. Berlin : 1892, 16 pp.,. 
and pi. 
The descriptions appeared in 1886 in S. E. Z., but the plate is new. 
742. Rodzianko, W. N. Notice sur la reproduction des Libellules du 
genre Diplax. Rev. Sci. Nat. St. Petersb. 1891, pp. 29-33 & 53, 
[Afeuj'optera.] 
Entirely in Russian, with a brief resume in French, on p. 53. 
