54 PROCEEDINGS OF THE ACADEMY OF [Jan., 



Heteronemia ignava n. sp. 



Types. — c? and 9 ; Piedras Negras, Costa Rica. (Schild and Burg- 

 dorf.) [Cat. No. 6,976, U. S. N. M.] 



Apparently closely related to H. mexicana Gray and H. striata (Bur- 

 meister), but differing from the former in the stouter body, longer limbs 

 and different abdominal appendages in the male; and from striata in 

 the shorter seventh abdominal segment in the male, and the different 

 proportions of the three terminal segments in the female. From H. 

 festuca (GigHo-Tos), another ally, it can readily be .separated by the 

 character of the female subgenital opercule, which is tridentate in 

 festuca. 



(S". — Size rather small; form moderately slender, subequal; surface 

 chiefly glabrous. Head subequal, dorsal aspect bearing about fom- 

 longitudinal rows of minute blunt tubercles; eyes very prominent; 

 antennse rather robust, about equal to half the entire length, basal 

 joint somewhat depressed, the greatest width basal. Pronotum sub- 

 equal in width, over half again as long as broad. Meson otum very 

 slightly expanded posteriorly, equal to the median femora in length. 

 Metanotum (with median segment) al^out three-fourths the length of 

 the mesonotum; median segment slightly transverse, about one-fifth 

 the total length of the metanotum. Abdomen with the segments 

 longitudinal, but about equal in width to the mesonotum; seventh 

 dorsal segment slightly bullate apically and fused with the short eighth 

 segment, the Hne of demarcation being hardly visible; ninth dorsal 

 segment operculate, somewhat bullate, the apical margin with a deep 

 V-shaped median emargination ; cerci but slightly shorter than the 

 ninth segment, compressed, slightly decurved and provided with a 

 dentiform point at the lower angle of the apical margin; subgenital 

 opercule with the apical margin rounded, and provided with an acute 

 ungual preapical hook. Limbs rather short, femora and tibiae sub- 

 quadrate in section, all unarmed. Anterior femora and tibiae each 

 equal to the pronotum, mesonotum and half of the head in length; 

 metatarsi equal to the remaining joints in length. Median femora 

 and tibiae equal to the mesonotum in length; metatarsi considerably 

 shorter than the remaining tarsal joints. Posterior femora reaching 

 to the apex of the fourth abdominal segment; tibiae slightly exceeding 

 the femora in length; metatarsi about equal to the remaining tarsal 

 joints in length. 



General color pale greenish-yellow, becoming brownish on the limbs 

 and apex of the abdomen; head with faint longitudinal bars of dull 

 brown. 



