492 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.40. 



MENGENILLA CHOBAUTII Hofeneder (1910a). 



Described from a male collected in Ain Sefra, Algeria, in 1896, in 

 the collection of Dr. A. Chobaut, in whose possession it remains as 

 type. 



Male. — Length 4.5 mm., breadth between tips of expanded 

 wings 6.5-7 mm. Color light brown, head darker; abdomen and 

 legs light golden, wings milky, with the strongest veins brownish. 

 Head approximately twice as wide as long; dorsally emarginate at 

 base. Mandibles moderately long, acute. Maxillse two-jointed, 

 slender. Antennse sensitive, pubescent, six-jointed, the first two 

 joints goblet-form; third, fourth, and fifth laterally produced, 

 lamellate; sixth elongate, lamellate. Eyes ellipsoidal, prominent, 

 with about fifty ommatidia. Pro thorax short. Mesothorax longer 

 but shorter on the median line, and wider at the sides. Metathorax 

 elongate, with prsescutum more or less quadrate, causing emargina- 

 tion of mesothorax; scuti about twice as long as wide; scutellum 

 ogival, elongate; postlumbium almost as long on middle line as it is 

 wide at base; postscutellum broad, hardly more than twice as long 

 as wide, rounded at apex, deeply emarginate at base of postlumbium. 

 Elytra normal, pubescent. Wings normal. Anterior and middle 

 trochanters elongate, posterior shorter; femora stout, cylindrical; 

 tibise more slender; tarsi five-jointed, with two large claws. (Edea- 

 gus at base very large, but rapidly diminishing to a point, gently 

 sinuate, but not angulate. 



Superfamily XENOIDEA Pierce. 

 Family MYRMECOLACID^ Pierce. 



Genus MYRMECOLAX Westwood. 

 MYRMECOLAX NIETNERI Westwood. 

 Elcnchus tenuicornis Green (1902). 

 There is practically no doubt in my mind but that Mr. Green's 

 Peradeniya (Ceylon) specimen is identical with the original Ram- 

 boddo (Ceylon) species described by Westwood. As this rare insect 

 belongs to the collection of Mr. Green a full description will be pre- 

 sented in the forthcoming generic revision, with a colored illustration. 



Family STYLOPID.E Kirby. 



Genus STYLOPS Kirby. 



The genus Stijlojjs still contains mainly species described from 

 females. In addition to the species described herewith the writer 

 has just received a number of other species which must be treated 

 later. The host genus Andrena is an immense complex which has 

 been divided into many subgenera or species groups. It seems to 



