498 The Ohio Naturalist. [Vol. VI, No. 6, 



Genitalia,- — Last ventral segment of female deeply emarginate, pygo- 

 fer with sinviate borders the sides meeting a little in front of apex of ovi- 

 positor, whole margin pallid, the surface and the tip of sheath hairy. 



Male ventral segment narrowing posteriorly, subtruncate apically 

 with about ten close ridges, anal plate about as long as broad, outer por- 

 tion flattened, central stripe black, claspers strongly curved back, polished. 



The male agrees closely with the female in size and coloration, the 

 opercula are broader than long, curved posteriorly, inner edge not meet- 

 ing the hind border, extending only to border of abdominal segment. 



This species is reported by Mr. Newell as depositing eggs to 

 such an extent as to cause serious injury to cotton, com and 

 some other plants. A detailed account of its habits is given in 

 the report of the Association of Economic Entomologists for 

 1905. This species has been taken at Shreveport, June 19, '05, 

 and Logtown, La., June 19, 1905. 



I have also in mv collection two specimens of males collected 

 by Mr. F. W. Mally at Shreveport, La., July 2, 1891. These 

 specimens were determined as possible examples of Cicada ni- 

 griventris Walk, but with a larger series of individuals this refer- 

 ence seems impossible. Prof. Uhler has kindly compared with 

 his sordidata and agrees with me that it cannot be referred to that 

 species. Seven males and three females. 



Cicada delicata n. sp. 



Similar to pallida I ittant, but difl"ering in elytral marking and in 

 coloration, length to tip of abdomen, IS mm., to tip of elytra, 27 mm., 

 width of head and eyes, 8 mm. 



Head including eyes nearly as wide as widest point on pronotum. head 

 produced anteriorly, the front with abcut nine transverse ridges each side. 

 Pronotum with narrow marginal carina expanding slightly into the 

 posterior angle. Cress veins of elytra quite oblique and deeply infus- 

 cated. 



Colcr, — Light green, especially pronounced on front; legs, except 

 tarsi, hinder margin cf pronotum, basal portion of elytral veins, vertex, 

 hinder pcrticn of prcnctum and disc of meso-thcrax, opercula and ab- 

 domen below (chery-yellcw, d< rsum of abdomen tinged with testaceous. 

 A transverse irregular band j reduced backwardly to ccciput and includ- 

 ing the reddish ( celli and dorsal prrticn of front and eyes, black. The 

 anterior pcrtion of prcnctum is marked with two spots extending from 

 the black margins cf the vertex. TVe anterior part of mescthcrax in- 

 cludes fotir cuneifrrm Mack spots, tie outer pcrtion is also infuscated 

 becoming a fairlj' cistii.ct black pcstcrirrly and there are two distinct 

 black points just in frcnt cf the elevated x cf the scutellum. The tip-) of 

 the rcstrum and claws of tarsi and S] ines of hind tibi.r arc blackened but 

 otherwise under picrticn is pallid. 



Genitalia, — Last ventral segment cf female rather shert, shallowly 

 emarginate 1 ehind with shallow rounded nctch at centre and bare cal- 

 lous spot each side, pygofer shcrt, berders barely meeting beneath, a 

 short sharp spine dcrsally. ^!ale ventral segment narrowed abru];tly 

 behind, ay ex slightly ccnvex. a few transverse furrows, anal plate nar- 

 rowed, berders strongly rcflexed, apex obtusely pointed, claspers short 

 and blunt. Male is very similar to female in size and coloration, the 

 opercles bread, sinuate laterally, reaching second abd< min.il segment 

 posteriorly, inner margins narrowly tourhin^ 



