Vol. XI] VAN DUZEE—NEW SPECIES OF ANTH0C0RIDAZ 143 



Male: Darker in color with the second antennal segment thicker and 

 black or nearly so, and the elytra piceous with a pale median dot on apical 

 margin of corium, the membrane entirely fuscous. 



Described from five males and 24 females taken by me 

 on lodge pole pine at Huntington Lake, Fresno Co., Calif., 

 July 24, 1919, at an altitude of 7,400 feet, all in the Acad- 

 emy's collections. 



Holotype, male, No. 795, allotype, female, No. 796, 

 Mus. Calif. Acad. Sci. 



Type locality, Huntington Lake, Fresno Co., Calif. 



Our five North American species of this genus may be 

 roughly distinguished by the following key. Xylocoris uni- 

 formis Parshley is unknown to me in nature and the charac- 

 ters are taken from the description. 



Rostrum short, not attaining anterior coxae; size large (4J4 mm.); 

 pronotum castaneous with black callosities. Calif. 



latipennis, new species. 

 Rostrum at least attaining anterior coxae; length 4 mm. or less 1 



1. Ostiolar canal distinctly anteriorly curved at apex; rostrum at- 



taining posterior coxae. Calif. lepidus, new species. 



Ostiolar canal straight 2 



2. Rostrum scarcely surpassing anterior coxae; membrane surpassing 



cuneus by three-fourths its width. Colorado furvus, new species 



Rostrum attaining middle of mesosternum or longer 



3. Black with the elytra castaneous-brown varied with darker; mem- 



brane with a pale spot either side, another at base and pale 

 along the veins. Eastern States, Canada. americana Parsh. 



Light brown, almost uniform; pale markings on membrane mostly 



obsolete. New Hampshire. uniformis Parsh. 



8. Melanocoris nigricornis, new species 



Allied to obovatus Champ., but with the antennae longer 

 and entirely black; piceous-black; elytra castaneous-brown. 

 Length 4 mm., width \]/ 2 mm. 



Head as long as median line of pronotum; apex broadly truncate, almost 

 clavate; vertex broadly convex, the ocelli prominent, red. Antennae about 

 as long as median line of head and pronotum combined; segment I nearly 

 attaining apex of head; II about three times length of I; III thinner and 

 hardly longer than IV, these two together as long as II. Rostrum not passing 

 anterior coxae. Pronotum broad and unusually flattened; collum not distin- 

 guished; sides nearly straight, broadly expanded and rounded toward an- 

 terior angles; surface minutely transversely rugose, impressed across the 

 middle. Elytra opaque, not visibly punctate; membrane passing abdomen 

 by nearly one-half its length, very obscurely wrinkled, the veins about 



