472 PROCEElDINGS OF THE ISTATIONiAL MtJSEIJAl vol. 94 



which curves slightly outward and ventrad at extreme tip; a small, 

 narrow, sub ventral, inner process (10 RPo) extends nearly halfway 

 down the inner side of 10 RPi. Nintli sternite (H) well pigmented, 

 transverse; process (HP) narrow, truncate apically, narrowly united 

 to H at outer third, separated from H mesad by a narrow, transverse 

 membranous area. Left paraproct (LPPT) prominent, fused along 

 entire inner side with H and HP; outer side produced at base as a 

 narrow, fingerlike process projecting laterocaudad; apex produced 

 caudad and nearly attaining tip of 10 EPi. Left cercus-basipodite 

 (LCB) strongly developed, more broadly sclerotic beneath, produced 

 mesad as a broad, acute sclerite, and mesocaudad as a broad lobe, 

 which is abruptl}' acuminate and sclerotic at apex — this tip minutely 

 truncate and nonfurcate. Right cercus-basipodite obsolete. Left 

 cercus (LCi) membranous except on inner apical third, constricted 

 basally; terminal segment cylindrical, similar to that of right cercus. 

 Right cercus with basal segment gradually expanded toward base; 

 basal foramen biemarginated dorsally, broadly and acutely produced 

 ventrally. 



Female (in alcohol). — Pigmented areas reddish brown on a golden 

 yellow integument ; head more reddish ; tip of abdomen darker brown, 

 venter yellowish. Length 6.5 mm. 



Head relatively small, subcircular, characteristic basal pattern 

 present ; occipital foramen longer than broad, evenly arcuate ante- 

 riorly; gailar bridge narrow. Mandibles with teeth large, acutely 

 pointed. Antennae with basal segments lighter in color. 



Hind basitarsi with only one sole-bladder; ventral setae large, ir- 

 regular in size, sparse. 



Abdominal sternites pale except seventh, eighth, and ninth : seventh 

 with a small, circular pigmented area on each side, otherwise pale, 

 membranous; eighth with pigmented areas covering entire lateral 

 fourth, somewhat broadened caudad, membranous medially; ninth 

 transverse, pale, but pigmented throughout except for a transverse, 

 rectangular basal area. 



Holotype, male (on slide), and allotype, female (on slide). — U. S. 

 N. M. No. 66587, collected by the writer at New Braunfels, Tex., August 

 20,1942. (See also p. 499.) 



Paratypes. — Numerous topotype males and females with above 

 data to be deposited in several major entomological collections. 



Remarks. — Oligemhia melanura is distinctly arboreal. Its pre- 

 ferred habitat appears to be the bark of trees sufficiently rough, or 

 covered with moss and lichens, and protected from the sun to afford 

 a moist, secluded environment. The type series was collected on trees 

 growing on the shaded side of a narrow, rocky canyon cutting a 



