38 Journal New York Entomological Society, t^^o'- xxiii. 



24. Okanagana vanduzeei var. consobrina Dist. 



Distant, Ann. Mag. Nat. Hist., Ser. 8, XIV, p. 165, 1914. 



This form differs from typical vandxizeei in being a little larger 

 and apparently if not actually a little broader, and in being more 

 hairy, with the surface more closely clothed with appressed yellowish 

 deciduous scale-like hairs. It also has the pale colors much more 

 extended with the elytral nervures pale on their basal one half. The 

 male uncus scarcely differs from that of vanduseei. Its more hairy 

 surface, paler colors and more compact oval form gives this species 

 a much more distinct appearance than its structural characters will 

 justify. 



25. Okanagana noveboracensis Emm. 



Emmons, Nat. Hist. N. Y., Agric, V, 152, pi. 9, fig. 6, 1852 {Cicada). 



This is the only Okanagana I know that is peculiar to the east It 

 is included here to complete the record of our known forms of this 

 genus. It is a little longer than rimosa with an obviously narrower 

 head (i^ by 6 mm.), and has the pale markings much more extended 

 and more tinged with greenish rather than with orange, the lateral 

 areas of the pronotum being mostly pale. The male uncus is a little 

 longer and more parallel than in rimosa and is without a hook at 

 apex. I have seen specimens of this only from the vicinity of 

 Niagara Falls. 



26. Okanagana vandykei new species. 



Allied to rimosa with the pale markings much extended and scarcely 

 tinged with orange, sometimes distinctly greenish. Head sJ/S mm. by 7 mm.; 

 pronotum 4 by 10 mm.; length 25 to 27 mm. to tip of elytra 33 to 27 mm.; 

 expanse 70 mm. Front rather strongly compressed, the median carinse un- 

 usually prominent and the sulcus well expanded below the middle. 



Color black, less polished than in rimosa. Vertex black with a pale basal 

 mark behind each lateral ocelhis ; supra-antennal plates and superior base of 

 the front conjointly pale ; a black cloud on the prominent apex sometimes 

 extending to the basal suture. Pronotum pale with a median black vitta 

 geminate anteriorly, and some black marks in the lateral depressions. Meso- 

 notum with a lateral vitta, the edge of the expanded lower margin, the disk 

 of the X and a large spot at the tip of its anterior branches including the 

 apex of the loop, pale. Hind edge of the metanotum and basal segment of 

 the abdomen slenderly pale. Tergum and superior genital pieces black, the 

 sides of the apical segment marked with pale. Beneath and legs mostly pale, 



