MORGAN HEBARD 175 



A male in a series in which the majority represent oregonensis 

 oregonensis (Thomas) from Glacier Park, Montana, was re- 

 corded by the author in 1932. 



The material originally recorded as this race from Idaho is 

 now known, from study of the penis, to represent indigens 

 Scudder. 



Melanoplus indigens missoulae new subspecies 



(PI. XII, fig. 6; pi. XIII, figs. 1 and 2.) 

 1928. Melanoplus indigens Hebard, Proc. Acad. Nat. Sci. Phila., lxxx, p. 



267. [Only the series of eight males and eleven females from Missoula, 



Montana.] 



Hitherto I had supposed that a single variable species, indigens, 

 nearest in relationship to oregonensis, existed. Study of larger 

 series now show that there are actually two species, one of which 

 divides into three geographic races. The characters shown by 

 the penis are by far the most important in distinguishing these. 



The present race resembles typical indigens closely and in 

 external characters can be distinguished only by the male cerci 

 which do not widen distad. The dorsal lobes of the penis, 

 however, are distinctive, their apices represented by very small 

 rounded projections. 



Realizing that the cerci agree with those of oregonensis and 

 that the penis is of very similar type, it is evident that missoulae 

 represents a condition diverging from indigens toward oregonensis. 

 I do not, however, feel justified in placing either indigens or 

 missoulae as a race of that species. 



Type. — $ ; Missoula, Montana. August 2, 1904. [Hebard 

 Collection, Type No. 1268]. 



Indistinguishable from typical indigens in all external characters except 

 the cercus. Size and form medium. Vertex moderately broad with distinct 

 lateral carinae, its dorsal surface concave. Frontal costa with weak blunt 

 lateral carinae, moderately impressed at median ocellus. Pronotal disk 

 with a fine medio-longitudinal carina on metazona, absent (or rarely very- 

 weakly indicated, this more frequent in females) on prozona. Prosternal 

 spine moderately elongate, rather slender, with apex well rounded. Tegmina 

 elongate ovate (with apices varying from broadly to rather sharply rounded, 

 the normal condition intermediate), separated by a brief interval, length 

 very definitely less than that of pronotum. Apex of abdomen moderately 

 thickened. Furcula represented by a pair of small, slender, moderately 



TRANS. AM. ENT. SOC., LXII. 



