46 STUDIES IN NORTH AMERICAN MEMBRACID.E 



in conformity with the dorsal contour and a little surpassing 

 the tip of the abdomen. Face flat, closely and evenly punctured 

 including the base of the tylus, the longitudinal striae on the 

 base of the vertex scarcely indicated. Elytra hyaline with the 

 nervures moderately distinct. Last ventral segment of the 

 female deeply triangularly notched, its outer angles truncated. 

 This species is concolorous so far as I can make out from 

 the dried specimens except that in some examples the dorsal 

 carinae are more or less tinged with rufous. I have seen this 

 form from Alabama, Mississippi, and Arizona and Dr. Ball has 

 two examples from the island of Hayti. It would not be sur- 

 prising if Stictocephala dubia Fowler (Biologia p. 109.) should 

 prove to be this species or its variety rufivitta Walker. 



Stictocephala festina var. rufivitta Walk. 



This variety as I locate it is a little smaller and more 

 slender than festina, and the dorsal carinae are not evanescent 

 before their point of meeting the posterior carina and are more 

 deeply tinged with rufous. I have seen but one individual with 

 the black venter as described by Walker and in this the carinas 

 are scarcely touched with rufous. Of this variety I have seen 

 only males. They are from Louisiana, Georgia and Florida 



Stictocephala festina var. angulata n. var. 



This differs from the typical festina in being a little broad- 

 er with the metopidium more strongly angled either side form- 

 ing there nearly a right angle. It is perhaps a little more 

 coarsely punctured and the notch in the last ventral segment 

 of the female is shorter and less angled. Of this form I have 

 seen only females. They were from Arizona and Texas. This 

 would appear to be the extreme form of the female as does 

 rufivitta of the male. Both grade insensibly into the typical 

 festina. 



6. Stictocephala rotundata Stal. PI. 1, fig 15. 



This species I have seen only from Cuba. It is very close 

 to festina but the pronotum is a little more elevated with a 

 higher and narrower metopidium the sides of which are quite 

 regularly rounded. The last ventral segment of the female is 

 broadly angularly excavated to the lateral angles. The head is 

 closely and evenly punctured as in festina. I include this 



