00 BULLETIN 66, UNITED STATES NATIONAL MUSEUM. 



ventral elongate, overhung by the much larger tenth dorsal, with 

 the cedeagus arising from its tip. (Edeagus chitinous, concave on 

 the inner margin for two-thirds of the distance to the apex, then 

 abruptly turned outward, making a very sharp process below; on 

 the outer edge acutely curved outward opposite the inferior process 

 and meeting the inner margin to form a very acute apex. 



Named in honor of its collector, Dr. A. Fenyes, of Pasadena, Cal. 



Type.— Cat. No. 10081, U.S.N.M. 



3. Family STYLOPIDiE Kirby, 1813, redefined. 



Strepsiptera or Stylo pidse Hoeven, 1850 (part). 

 Hymenopterobise (part) Saunders, 1872. 

 Stylopides Saunders, 1872. 



Type-genus. — Stylops Kirby (1802). 



Antennae six-jointed, third laterally produced; tarsi four-jointed. 



This family includes three genera, parasites of Andrenidse. 



5. Stylops Kirby (1802), parasitic on Andrena; Europe, America. 



6. Parastylops Meijere (1909); Java. 



7. Halictostylops , new genus, parasitic on Halictus; Europe. 



The location of the third genus is uncertain, as no male has ever 

 been seen; but since the female of Halictostylops spencii Nassonow 

 resembles a Stylops female it is placed here. The genus may subse- 

 quently be found to fall near Halictoxenos in Xenidse. 



5. Genus STYLOPS Kirby (1802). 



Stylops Kirby, 1813.— Curtis, 1828.— Hoeven, 1850.— Saunders, 1872.— 

 Pierce, 1908. 



Type of genus. — Stylops melittx Kirby (1802). 



Name derived from avAoc (pillar) + w^ (eye), = stalked eye. 



Parasitic on the genus Andrena. 



Curtis described this genus as follows: 



Male. — Antennae inserted between the eyes near the crown of the head, mem- 

 branous, perforated or punctured, composed of six joints, the basal one somewhat 

 cup-shaped; second very short, transverse; third produced on the internal side into a 

 dilated hollow lobe extending beyond the fifth joint; fourth large subclavate; fifth 

 smaller subovate; sixth as long, ovate and compressed. Lab rum wanting. Pharynx 

 visible. Mandibles arising between the eyes, very remote, at their base conniving, 

 long, slender, lanceolate and horny. Maxillae large and robust, membranous, indis- 

 tinctly pubescent, biarticulate. Prothorax and mesothorax very short rings, not so 

 broad as head. Tarsi four-jointed, each with pulvillus, basal joint largest, terminal 

 smallest and notched at tip (Curtis, 1828). 



Female. — Cephalothorax rather abruptly narrowed behind stig- 

 matal angle, subtriangular to ovate, more or less obtuse or truncate 

 in front. Stigmata often prominent. Mouth ventral with mandibles 

 on each side, rather broad and obtuse. Abdomen with five median 

 genital canals on second to sixth segments (Nassonow, 1893 a). 



