OF WASHINGTON, VOLUMK XVI, KU4 1_'7 



to form the tip of the sulcate frontal projection, at the sides of which the 

 antennae are inserted. Eyes very large, convex, reaching and touching 

 the base of the elytra. Mandibles very short, broad and blunt, not reach- 

 ing within their own length of each other. Maxilla- a little longer, two 

 jointed, cylindrical, the first joint almost twice as thick as the second, and 

 neither quite as long as the mandibles. Antenna? elongate, seven jointed, 

 flattened foliaceous, with large sensory pits; first two joints simple, third to 

 sixth moderately elongate, each produced just before the attachment of the 

 succeeding joint into a broad flattened lamina not much more than twice as 

 long as the main stem; seventh joint also produced, laminate. Pronotum 

 subquadrate, cut off at sides by -head. Mcsonotum band-like, also in- 

 cluded within the cavity of the head. Elytra elongate. Mefanolmn with 

 prsescutum elongate, convex at base, sides roundingly approximate toward 

 apex, where they almost meet; scuti narrow, elongate, only a little longer 

 than prsescutum; scutellum broad, quadrate, basally convex, apically 

 bisinuate, not much longer than postlumbium; postlumbium at least two- 

 thirds as long as wide; postscutellum long, broad; femoralia reaching to 

 middle of postscutellum. Wings with radial vein meeting the costal mar- 

 gin beyond the middle, a small detached cloudy vein behind the tip of tin- 

 radius, medius strong, with a long anterior cloudy branch, cubitus missing, 

 first anal merely a cloudy vein, second anal strong, third anal missing. 

 Tarsi three-jointed, the first joint of different shape from the following; 

 claws absent. (Edeagus strongly bent ; the under side being twice bent and 

 the upper thrice ; the last bend being a very strong reflexion at apical fourt h ; 

 apex very acute. 



The generic name is derived from Stenocranus (the host genus) 

 + <tXos (loving), signifying a parasite of Stenocranus. 

 Type of genus, quadratus n. sp. 



Stenocranophilus quadratus new species. 



Described from one type and five paratype males bred by 

 T. H. Jones, October 19, 1912 from two female and four iiymphal 

 Stenocranus saccharivorus Westwood collected October 14, and 16, 

 1912 from sugarcane at Rio Piedras, Porto Rico, and bearing the 

 Porto Rico Sugar Planter's Association accession number "847- 

 1912." One paratype was returned to the association. The 

 specific name is intended to draw attention to the quadrate form 

 of the pronotum and the scutellum. This form of scutellum lias 

 not heretofore been found in the Halictophagidae. 



Mule: Length 0.9 mm., wing expanse 2 mm. Color golden brown. Ver\ 

 few points not mentioned in the generic description remain to be noted. 

 The first tarsal joint is broad, apically broadest and somewhat acute on 

 outer angle, the point of attachment of the second is subapical at the inner 

 angle; the point of attachment on the second joint is dorsal and very near 



