130 BULLETIN 85, UNITED STATES NATIONAL MUSEUM. 



horizonatally toward anal valve from near apex; with a tooth at 

 apex of forceps and one at about the middle of the posterior process. 

 Anal valve long, rather broad, sides subparallel, slightly recurved. 

 Female. — Genital segment not as long as rest of abdomen; dorsal 

 valve only slightly longer than ventral, very acute at apex. 



Described from seven males and females from Ames, Iowa (C. W. 

 Mally) and four from Luverne, Iowa (Mally), and six from West- 

 point, Nebraska, all on AmorpJia canescens, from March to June. 

 The latter specimens in the United States National Museum collection 

 are labeled Amblyrhina fractiforceps Riley, a manuscript name. 



After careful comparison of more specimens it seems evident 

 that the Florida species which I erroneously named Psyllopa ilicis 

 (Ashmead) in a former paper ^ is identical with amorphse. The 

 Florida specimens are considerably smaller than many of the Iowa 

 forms, but some of the latter are very small also. In structure they 

 are very similar. If we allow for a certain amount of variation in 

 size and minor characters, such as length of antennae, etc., we can not 

 recognize the two lots as even varietally distinct. The difference m 

 food habits is mteresting but not unusual. The ilicis species of 

 Ashmead, according to several determined specimens in the United 

 States National Museum collection, is neither an Arytaina nor an 

 ApJialara, but belongs to a new genus, Paurocephala. (See p. 43.) 



ARYTAINA CEANOTHiE, new species. 



Figs. 58, 240, 290, 442. 



Length of body 1.7 mm. ; length of forewing 2.3; width of head 0.70. 

 General color yellowish to light brown to dark brown; on the darker 

 forms the dorsum, vertex, and legs are light brownish yellow. Body 

 very small. 



Head strongly deflexed, about as broad as thorax, punctate. Ver- 

 tex arcuate on posterior margin, with a deep and prominent fovea 

 on each side and often a deep sulcate impression also, elevated 

 roundly on postocellar regions, bulging forward on each side of 

 median line. Genal cones very short, small, broadly rounded, 

 much depressed below level of vertex, divergent, not always easily 

 visible from above, slightly pubescent. Clypeus very large. Eyes 

 rather large. Antennae about twice as long as width of head, slender. 



Thorax strongly arched, rather broad and stout, coarsely punctate. 

 Wings small, rather transparent, oblong-ovate, broadly rounded at 

 apex, about two and one-fourth times as long as broad ; second mar- 

 ginal cell smaller than first; pterostigma nearly half as long as radial 

 sector; apex of wing sometimes indistinctly fumate. 



Genitalia. — Male.- — Genital segment rather long, semiovate; for- 

 ceps very long and very slender, roundly acute at tip. Anal valve 



1 Pomona Journal of Entomology, vol. 3, 1911, p. 629. 



