H Y DROMETRIDJC CICADI DAI. 
Ins. 231 
IlYDROMETRIDiE. 
A eimphilus honnairii, Signoret. Genus and species recharacterized and 
figured by him ; Tijdschr. Ent. xxiii. pp. 1-3, pi. i. figs. 1-9. 
Gerris thoracica var. fuscinotum from Finland described, and the 
Finnish species of the siibgenus Limnotrechus, Stal, tabulated ; Reuter, 
Medd. Soc. Fenn. v. pp. 191 & 192. 
Mesovelia parra^ Sahib., = furcata, M. & R. ; id. 1. c. p. 166. 
Nepid^. 
Ranatra vicina, sp. n., Signoret, Bull. Soc. Ent. Fr. (5) x. p. cxxxv., 
Egypt. 
Notonectid^. 
Ploa letourneuxi, sp. n., Signoret, Bull. Soc. Ent. Fr. (5) x. p. xxxiv., 
Alexandria. 
CoRISIDiE. 
Corisa prccusta, Fieb., var. producta from Finland described; Reuter, 
Medd. Soc. Fenn. v. p. 193. 
HEMIPTERA-HOMOPTERA. 
Mayr, P. M. Rhyncliota Tirolensia. ii. Hemiptera-IIomoptera (Cica- 
dinen). Ber. Ver. Innsbr. x. pp. 79-101. 
A local list, with localities. 
Thomas, C. Eighth Report of the State Entomologist on the Noxious 
and Beneficial Insects of the State of Illinois. Springfield : 1879, 
8vo, pp. X. & 212, woodcuts. 
This volume is entirely devoted to the Psyllidai and Aphididcn of the 
United States, of which a full account is given, many species of the latter 
being described as new. Their insect enemies are also noticed, many 
Coccinellido}, &c., being described and figured. A Supplement contains 
copious extracts from Riley’s & MonelFs papers on the subject [cf. Zool. 
Rec. xvi. Ins. pp. 247 & 248]. 
CiCADIDiE. 
Rossi, A. Sul modo di terminare dei nervi nei muscoli dell’ organo 
sonoro della Cicada. Rend. Acc. Bologn. 1879-80, pp. 119 & 120. 
Cicada septemdecim noticed and figured ; Riley, Am. Ent. iii. pp. 25-30 
(map), 172 & 173, fig. 76. 
Tihicina quadrisiynata^ Hag., and picta, Ger., noticed ; Chicote, An. 
Soc. Esp. ix. pp. 198 & 199. 
