42 BULLETIN 85, UNITED STATES NATIONAL MUSEUM. 



than two and a half times as long as broad; pterostigma long; mar- 

 ginal cells subequal. 



Oenitalia. — Male and female genitalia similar to type-species. 



Described from 17 males and females from San Diego, Texas (E. A. 

 Schwarz), on Acacia amentacea,^ May, October, and December; 1 

 female from Pahn Springs, California (Hubbard), on Phorodendron 

 growing on Acacia gregii, February. 



Type.— No. 18073, U. S. Nat. Mus. 



The chief characteristics of this subfamily are the rounded head 

 and the usually visible frons. Head short, uniformly rounded 

 forward and down, with the frons usually not concealed by the 

 gense and the gense variously swollen (conical in Calojjliya). Wings 

 hyaline, ovate; pterostigma usually large and long; first marginal 

 cell often enlarged, or long and narrow. 



The typical genus, Pauropsylla, is not represented in the American 

 fauna. For a description of this genus see Riibsaamen '99: 263; 

 Kieffer'05: 167; or Crawford '12c: 429. 



SYNOPSIS OF GENEUA. 



a^Gente more or less swollen, but not produced into conical processes; frons always 

 visible; first marginal cell not unusually large. 

 6'. Frons, gense and vertex forming a relatively smooth surface, frons not as in 

 following genus; head uniformly rounded forward and down; antennae not 



very long Paurocephala Crawford 



b^. Frons forming the bottom of a groove between genag, with gense protruding 

 below frons; head less uniformly rounded down in front; antennae very long 



and slender Hetero-psylla, new genus 



a?. Genae produced into two short or longer conical processes, with the frons sometimes 

 covered; head rounded downward as in the first genus; first marginal cell very 

 much larger than second; antennae short Calophya Loew 



Genus PAUROCEPHALA Crawford.^ 



Body robust, surface strigate; thorax strongly arched. Head 

 strongly deflexed, rounded downward in front, presenting a roundly 

 convex surface in dorsal view; frons not covered by gense, visible as 

 a small sclerite forming an uninterruptedly smooth surface with 

 vertex and genae; gense not conical, though often swoUen. Eyes 

 large. Antennae longer than width of head. Wings hyahne, more 

 or less oval in shape, with a pterostigma. 



Type of genus. — P. psijlloptera Crawford (a PhiUppine species). 



PAUROCEPHALA MAGNIFRONS, new species. 

 Figs. 16, 73, 296, 461. 



Length of body, 2.6 mm.; length of forewing 3.5; width of head 1. 

 General color greenish yellow throughout. 



» The lirst description of this genus is being published in the Philippine Journal of Science, Vol. 8, No. 

 4, sec. D, p. 293, Aug. 1813. 



