MORGAN HEBARD 179 



more lateral in position, slanting to their attingent apices, widen- 

 ing gradually distad with lateral surfaces definitely convex (in- 

 stead of vertical and flattened) and distad finely shagreenous 

 and evenly rounded (without indication of angulation). 



In the Montana and Idaho males some tendency toward 

 indigens indigens is shown in the dorsal lobes of the penis having 

 their lateral surfaces less convex and the lateral outline of their 

 apices with weak but appreciable rounded angulation indicated 

 in rare specimens of the Haugan series. More material from 

 other localities in the mountains of Idaho and extreme western 

 Montana is needed to decide the geographic significance of the 

 present insect. It is surprising to find it at the more eastern 

 localities noted, there being apparently little geographic or zonal 

 significance when these are considered in conjunction with the 

 localities from which indigens indigens is known. 



Type. — $ ; Haines, Oregon. July 10, 1931. (R. H. Beamer). 

 [Hebard Collection, Type No. 1269]. 



Generally as here described for type of indigens missoulae, except as fol- 

 lows. Pronotal disk (usually) with medio-longitudinal carina very weakly 

 indicated on prozona (but varying to obsolete there) ; transverse sulci 

 sometimes (but not always) slightly more distinct. Furcula very feebly 

 ■divergent (varying in paratypes to moderately divergent). Supra-anal 

 plate with lateral margins showing a moderately decided thickening 

 opposite cereal bases. Cerci with margins more convex in distal portion and 

 resultantly more spatulate, which portion includes over half the cercus and 

 has its outer surfaces impressed, more evenly rounded at apex with ventral 

 margins rounding dorsad distinctly more definitely than in indigens 

 indigens. 13 Subgenital plate produced in a heavily binodose apex (the 

 apex in paratypes varying from this condition to transverse and dimpled or 

 broad and bluntly transverse). Dorsal lobes of penis distinctive, as 

 described above. 



Allotype. — $ ; same data as type. [Heband Collection]. 



Differs from male as does this sex of indigens missoulae. Females of the 

 races of indigens are apparently indistinguishable. 



The measurements of the extremes in the nine males and ten females 

 from Haines, Oregon, are: Length of body $ 17. to 20.5, $ 18.5 to 21.8; 

 length of pronotum $ 4.8 to 5., $ 5. to 5.3; caudal width of pronotal disk 

 $ 2.7 to 2.9, $ 3.3 to 3.4; length of tegmen $ 2.7 to 3.8, $ 3.4 to 4.4; 

 length of caudal femur <£ 10. to 10.9, $ 11.8 to 12.3 mm. 



13 Only in a few of the males from Haugan, Montana, is distal truncation 

 of the cercus shown. 



TRANS. AM. ENT. SOC., LXII. 



