102 Proceedings of the Biological Society of Washington, 



3. Elevation on elytra large, in length at least one-third of dis- 



coidal area. Areoles in hood small. magna n. sp. 



Elevation on elytra smaller, not so long as one-third the length 



of discoidal area. Areoles on hood comparatively larger 



densata n. sp. 



Dolichocysta venusta Champion. 



1898 — Champion, Trans. Ent. Soc. Lond., p. 57. 

 1917— Drake, Ohio Jr. Science, xvii, No. 6, p. 214. 

 1917 — Van Duzee, Cat. Hemiptera of N. A. etc., p. 215. 



Pronotal hood large and broad, especially at base, apex blunt as viewed 

 from above. Carinae wavy, membranous margins wide, flaring and rounded. 

 Antennae only moderately long. Posterior pronotal process with large 

 areoles, pronotum finely punctate before. Elytra with a prominent bulbous 

 elevation along each carina which separates the subcostal and discoidal 

 areas. This elevation is evenly rounded and as viewed from above appears 

 somewhat flattened. Costal area with heavy veins which are irregularly 

 branched, making two irregular rows of areoles. Subcostal and discoidal 

 areas with about six rows of areoles. 



General appearance of insect dark, veins of membranous portions irregu- 

 larly darkened giving a mottled appearance as viewed from above. An- 

 tennae and legs yellowish brown. Last segment of antennae much dark- 

 ened. The first two segments of antennae and femur of legs chestnut 

 brown. Tibiae yellowish brown. Beneath the insect is chestnut brown to 

 black. 



The specimens examined are all from Los Angeles, California. It is 

 also recorded from Lower California and Colorado. 



Practically nothing is known of its food plants. 



Dolichocysta magna, n. sp. 



Pronotal hood not as broad as in venusta Champ. Carinae wavy, mem- 

 branous margins wide, flaring and rounded. Elytra with a prominent 

 bulbous elevation but which is not so large or rounding as in venusta. As 

 viewed from above it is more narrow and acutely rounded above, not at 

 all flattened. Costal area regularly biseriate, subcostal and discoidal areas 

 with about six rows of areoles. 



General appearance resembles venusta. Legs somewhat darker. 



Type d\ Fort Collins, Colorado; allotype $ , Hill City, South Dakota; 

 paratype 9 , Nebraska. All in the collection of the U. S. National Museum. 

 Type No. 22,293. 



Dolichocysta densata, n. sp. 



Closely resembles the preceding species, from which it differs only in 

 the wider and more evenly rounded membranous margins of the pronotum, 

 the larger and higher elevation on the elytra, and the two irregular rows of 

 areoles in the costal area of the elytra. 



