202 DAVENPORT ACADEMY OF NATURAL SCIENCES. 



tate metazona. Prosternal spine moderate, conical, erect ; interspace 

 between mesosternal lobes nearly or quite half as long again as broad 

 (d") or a little transverse (?), the metasternal lobes aitingent {(f) or 

 not very distant (?). Tegmina aboit (cf) or fully (?) as long as the 

 pronotum, attingent or feebly overlapping, obovate, apically rounded, 

 rarely in the least degree angulate, fuscous, often flecked with darker 

 fuscous. Fore and middle femora testaceous generally more or less 

 infuscated, moderately tumid in the mal^; hind femora testaceous, 

 broadly, heavily, and on the outer face angula-ly bifasciate with fus- 

 cous, sometimes sharply, sometimes obscurely, the whole geniculation 

 infuscated, the lower face dull flavous ; hind tibiae glaucous or plum- 

 beo-glaucous, in rare instances (of either sex) either wholly or apically 

 red, the spines black beyond the base, 10-12, usually 11, in number 

 in the outer series. Extremity of male abdomen strongly clavate, 

 considerably recurved, the supraanal plate with the basal portion rec- 

 tangular, the apical sharj^ly triangular, the apex being very acutangu- 

 late, all the margins a little raised, the median sulcus heavy, percurrent, 

 but its walls fading apically ; furcula wanting ; cerci moderately stout 

 and long, tapering to the middle and then similarly expanding, the 

 median portion three-fourths as wide as the base and as wide as the 

 narrowest part of the frontal costa, the apical portion strongly com- 

 pressed, the lower outer portion produced to a triangular, bluntly 

 acuminate lobe, the whole incurved and failing somewhat to reach 

 the tip of the supraanal plate; subgenital plate moderate, a little flar- 

 ing, subequal in breadth and nearly as broad apically as long, the api- 

 cal margin slightly elevated, rounded and entire. 



Length of body d', 16 mm , $, 19.5 mm.; antennee, d' , 8 mm., ?, 

 6.75 mm.; tegmina, d, 3.5 mm., ? , 4.25 mm ; hind femora, d, 9 

 mm., ?, 10. 25 mm. 



20 d, 26 ?. Ashland, Sept. 7, and Siskiyou, Jackson Co., Oregon, 

 Sept. 6, A. P. Morse. 



This species was taken by Mr. Morse only in the extreme southern 

 part of Oregon, being replaced farther north, even at Grant's Pass in 

 the same water shed, by the larger M. validus, which it closely 

 resembles, differing from it, however, distinctly in size and also in the 

 lack of male furcula, the relatively shorter cerci, the more rounded 

 form of the tegmina, and generally in the color of the hind tibiae of 

 the female; the eyes of the male are also more ])roniinent and the 

 antennas of the ^ame sex relatively longer. 



