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U. S. NATIONAL MUSEUM BULLETIN 216 



because they lack the areolet. We have some of these species and 

 find that they are not true Epirhyssa but belong to Hierax (a pre- 

 occupied name) and to some undescribed genera. 



1. Epirhyssa dietrichi, new species 



Front wing of male 20 mm. long, of female 19 to 23 mm. long; 

 prepectal carina present; first tergite about 2.1 as long as wide in 

 male, about 1.85 as long as wide in female; tergites 3 to 6 polished, 

 with moderately close, fine, weak, setiferous punctures; ovipositor 

 sheath about 1.55 as long as front wing. 



Figure 184. — Locality for 



Epirhyssa dietrichi. 



Fulvous. Much or most of head, much of front part of thorax, 

 most of front leg, sub tegular ridge, a pair of median longitudinal 

 stripes on center of mesoscutum, and scutella, yellowish; head with 

 a narrow stripe between top of eyes and a narrow stripe over upper 

 part of occipital carina blackish; scape blackish above; most of pedicel 

 and all of fiagellum except the ring joint blackish; pronotum medially 

 in front, margins and notauli of mesoscutum, a stripe on front edge 

 of mesopleurum, a narrow transverse band at base of propodeum and 

 metapleurum, narrow band on apical margin of propodeum, a narrow 

 band on apex of first six tergites, and narrow band on base of second 

 through fifth tergites, black; middle and hind tibiae yellowish, fulvous 

 basally; wings strongly tinged with fulvous, the front wing faintly 

 infuscate apically; stigma fulvous brown. 



Type: 9, Bear Wallow, Mount Lemmon, Santa Catalina Mts., Ariz., 

 June 23, 1953, A. and H. Dietrich (Ithaca). 



Para types: d", 69, same locality and collectors as type, June 23 

 and 24, 1953 (Ithaca and Townes). 



