March, I9I3-] DaVIS : NeW SpECIES OF CiCADAS. 17 



part of the mesonotum. At the tip of each anterior line of the X 

 there is a black impressed puncture. Metanotum with posterior edge 

 greenish yellow. Dorsum of the abdomen black with the segments 

 narrowly edged with yellow except the last segment which is yellowish 

 with a large irregular spot dorsally and a faint, narrow one each 

 side. In the dorsal spot there are indications of two small included 

 light spots at the base of the segment. Supra-anal plate dorsally 

 black with the sides yellow. Uncus yellow shaded with brown, par- 

 ticularly at the tip. Beneath, the valve yellow, also the posterior 

 margins of the abdominal segments, the last one having the entire 

 central area yellow. Each ventral segment has two dark spots, one 

 on each side of the central area. The opercula yellow touched with 

 orange and black. Legs yellow streaked and spotted with black. 



A paratypic female has the hind margin of the last ventral seg- 

 ment deeply notched almost to the base; the segment is pale with a 

 black spot on either side; otherwise the female is colored as in the 

 male. 



In addition to the type and the female mentioned above, there are 

 in the author's collection i6 males and 14 females, all from Merced 

 Co., California. This series shows the transverse fold crossing the 

 fore wings at the node, often considerably developed and in this 

 respect approaching the much larger Tibicinoidcs hesperiiis, which it 

 also resembles in color and markings more than it does syiiodica. 

 Further the uncus is shaped much more like that of hespcrius than 

 syiiodica, the head, however, in form is more hke the latter species. 

 The outer row of cells in the fore wing are proportionately short in 

 mcrccdita. whereas they are long in licspcriiis and syiiodica. The 

 front in hesperius is usually margined on the upper surface by a well- 

 defined elevated ridge. 



Okanagana minuta new species. 



Type from Stanford University, California, May 26, 1914. 



The smallest Okanagana so far described. 



Length 16 mm.; to the tip of the wings 18 mm.; fore wings 5.5 

 by 15 mm. Head not quite as broad as the front margin of the 

 pronotum: the front produced as in synodica; supra-antennal plates 

 anteriorly not much rounded. Median sulcus of the front broad. 

 Pronotum 2.5 by 6 mm., the sides not parallel, the humeral angles 



