1918.] NATURAL SCIENCES OF PHILADELPHIA. 163 



like process, which is narrowly separated from a median rectangulate 

 projection by a distinct but not deep V-shaped emargination, dextrad 

 of the rectangulate projection the margin is briefly arcuate, then 

 strongly oblique truncate. Median and caudal femora with ventral 

 margins finely spined: caudal tarsi hardly shorter than the caudal 

 tibiae, the metatarsus occupying slightly more than one-half the 

 length of the tarsus: aroha present. 



General color mummy brown, becoming buckthorn bro\^Ti distad 

 on the femora and remainder of the limbs, and blackish-brown on the 

 head and proximal antennal joint. Abdomen becoming auburn meso- 

 proximad. Subgenital plate blackish-brown. Eyes blackish-browTi. 



Length of body, 6.2 mm.; length of pronotum, 1.5; greatest width 

 of pronotum, 1.7; length of tegmen, 5.3; greatest width of tegmen, 

 1.7. 



The type is unique. 



Oxyhaloinae. 

 ChorisoEeura parish! n. sp. (PI. I, figs. 19-21.) 



This is a most peculiar species, which we are placing in Chori- 

 soneura chiefl}^ on account of the peculiar structure of the male sub- 

 genital plate. The femora are very weakly spined ventrad, while 

 the general form is distinctly suggestive of an Anapleda, so much so 

 that we are not at all convinced of the proper generic position of the 

 species, the assignment of which is tentative. The insect does not 

 seem to be closely related to any of the described species of Chori- 

 soneura and we are unable to give a comparative diagnosis for that 

 reason. 



Type: d^ ; Igarape-assu, State of Para, Brazil. (H. S. Parish.) 

 [Acad. Nat. Sci. Phila., Type no. 5234.] 



Size rather small: form depressed, elongate elliptical: surface 

 moderately polished. Head projecting cephalad of the pronotum 

 when seen from the dorsum : occipital line arcuato-truncate when seen 

 from the dorsum; least interspace between the eyes, which is ventral 

 in position, very broad, subequal to the area between the antennal 

 scrobes; face moderately bullate: palpi with the third joint slender, 

 slightly longer than the fifth joint; fourth joint faintly shorter than 

 the fifth joint, slender proximad and regularly enlarging distad; 

 fifth joint somewhat thickened, elongate elliptical in outline: eyes 

 strongly reniform in basal outline: antennae slightly exceeding the 

 body in length; third joint nearly twice as long as the second joint, 

 proximal joint moderately enlarged, slightly longer than the third 

 joint. Pronotum transverse, its greatest length contained one and 



