164 DAVENPORT ACADEMY OF NATURAL SCIENCES. 



angle rounded, the disk gently convex on the prozona with no lateral 

 carinae, on the metazona plane with obscure rounded lateral carinae; 

 median carina slight though distinct and infuscated on the metazona, 

 and less so on the front j^ortion of the prozona ; prozona barely longi- 

 tudinal, smooth, but slightly longer than the feebly and rather sparsely 

 punctate metazona. Prosternal spine moderate, compressed conical, 

 blunt ; interspace between mesosternal lobes narrow, at least four 

 times as long as broad, but gradually broadening in posterior half, the 

 metasternal lobes attingent over a long space. Tegmina slender, 

 gently tapering throughout, apically rounded, surpassing a little the 

 hind femora, pale fuscous, immaculate ; wings pellucid, with a scarcely 

 perceptible flavous tinge, the posterior veins pale glaucous. Fore and 

 middle femora testaceous ; hind femora fuscous on the outer face, 

 tinged apicallv with blue, elsewhere flavous or orange flavous twice 

 barred above with fuscous, the genicular lobes pallid with a basal 

 fuscous spot, the genicular arc heavily infuscated ; hind tibiae dark 

 glaucous, pallescent at extreme base, the spines pale glaucous with 

 blackish fuscous tips, 10-11 in number in the outer series. Extremity 

 of abdomen feebly clavate, upturned, the supraanal plate obscurely 

 clypeate. the lateral and a|)ical margins a litde and broadly raised, 

 the median sulcus obsolete; furcula consisting of a jjair of strongly 

 flattened, straight, ])arallel plates, broad and attingent in basal half, 

 each suddenly narrowing to half its former width by the rounded ex- 

 cision of its inner margin, the apex broadly rounded and reaching 

 beyond the middle of the underlying plate; cerci rather small, taper- 

 ing to a little more than half their extreme width in the basal half, 

 when each is bent slightly inward, thereafter continues equal to the 

 blunt and rounded tip, which fails considerably to reach the tip of 

 the supraanal plate ; subgenital plate forming a well-rounded scoop, 

 the apical margin of which is distinctly elevated and bluntly notched, 

 and notwithstanding this elevation considerably narrower apically 

 than at base. 



Length of body, 25 mm.; antennse, c. 13 mm.; tegmina, 22 mm.; 

 hind femora, 14.5 mm. 



I S' ■ Fort Collins, Larimer County, Colorado, August ii,C. F. 

 Baker. 



This species is separable from all others of the Bowditchi series by 

 the elevation of the apical margin of the subgenital plate of the male; 

 it bears the closest general resemblance to M. boivditclu. 



