470 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.54. 



30. Genus PYRILLOXENOS Pierce. 



Pyrilloxenos Fierce, 1914, Proc. Eut. Soc. Wash., vol. 16, p. 128. 



Male. — Head not conspicuously excavated behind. Eyes large, 

 convex with very large facets. Mandibles short, triangular, glabrous. 

 Antennae short, seven jointed, flattened, foliaceous, with large sen- 

 sory pits; first two joints simple, the second shorter; the remaining 

 five joints crowded, each broadened laterally in a broad lamina, the 

 apices of which are about even with each other, the entire antennae 

 not longer than width of head. 



Pronotum very short, transverse band-like. Mesonotum a little 

 longer, also band-like. Elytra pedunculate spatulate, sensitive, 

 pubescent. Metanotum with praescutum rounded, keystone-shape, 

 truncate, sinuate at apex, longer than scutellum and postlumbium 

 together; scuti oblique, considerably surpassing praescutum at outer 

 angles and supporting it by a tiny projection at inner angles; scutel- 

 lum broad, irregular in outline, narrower at base than praescutum, 

 broadening in a concave line behind scuti, with anterior angles 

 rounded, almost rectangular, and posterior angles diagonally pro- 

 duced as quadrate peduncles, apex otherwise truncate; postlumbium 

 short, transverse, fitting in between and scarcely surpassing the 

 posterior peduncles of the scutellum; postscutellum large, convex, 

 broadly rounded. 



Tarsi three- jointed, the first joint mucronate ; claws absent. Eighth 

 ventral segment acutely produced beneath ninth. Anal segment 

 small, flap-like. Oedeagus strongly bent, broad near base, rectangu- 

 larly bent near apex, apical process slender and very acute. 



The generic name is derived from Pyrilla (the host genus) -\-Xenos 

 (the typical Strepsipterous genus) signifying a Strepsipterous para- 

 site of Pyrilla. 



Type of the genus. — Pyrilloxenos compactus Pierce, from India. 



PYRILLOXENOS COMPACTUS Pierce. 



Plate 77. 

 Pyrilloxenos compactus Piebce, Proc. Ent. Soc. Wash., 1914, vol. 16, p. 129. 



Described from a type female and allotype male and two para- 

 type females from Pusa, Bihar, India, collected by C. S. Misra. 



The original description is as follows : 



The material was collected in August, 1907; March 15, 1"913; and 

 May 23, 1914. The specimens collected in August, 1907, consist of 

 allotype male, pupal cephalothorax, and three paratype females with 

 triungulinids. This material is the property of the Entomological 

 Section, Agricultural Research Institute, Pusa. The type is deposited 

 in the United States National Museum, and a paratype female is in 

 the author's collection. The author is indebted to Mr. T. Bainbridge 

 Fletcher, imperial entomologist, for the material. The specific name 



