XVII. 



78 Journal New York Entomological Society. [Voi. 



convex in the middle, with nearly straight anterior border. Frontal area distinct 

 Antenna! scapes simple, curved and feebly compressed at the base ; funicular joints 

 all longer than broad ; club S-jointed. Thorax rather slender, with pronounced 

 mesoepmotal constriction ; pro- and mesonotum evenly rounded in profile ; epinotum 

 unarmed, base slightly convex, passing through a distinct, but obtuse angle into the 

 somewhat shorter, straight and sloping declivity. Petiole slender, fully three times 

 as long as broad, in profile with a well-developed, cylindrical peduncle, armed with 

 a small acute, antero-ventral tooth, and surmounted by a low rounded node just 

 behmd the middle. Anterior slope of node concave, posterior more convex Post- 

 pet.ole fully 1% times as long as broad, subcampanulate ; in profile with its upper 

 surface nsmg in a gentle curve towards the posterior edge of the segment and then 

 abruptly descending. Gaster elliptical, rather large. 



Shining ; head and thorax subopaque, petiole, postpetiole, gaster and le^s 

 glabrous. Mandibles densely striato-punctate. Clypeus, frontal area and hea^d 

 finely, longitudinally rugose, the ruga, somewhat curved and diverging on the front 

 but straight on the posterior portion of the head. Cheeks and posterior corners also 

 coarsely punctate. Thorax finely rugose like the head, the rug^ being transverse 

 on the pronotum and base of epinotum, longitudinal on the pleura and mesonotum 

 On the epinotal declivity they are faint or obsolete, and the surface is densely and 

 finely punctate. 



Hairs golden yellow, long, abundant and pointed, suberect or reclinate covering 

 the body and appendages throughout. ' 



Mandibles, thorax, petiole and postpetiole brownish-yellow ; head, mandibular 

 denticles, gaster, legs and antennal scapes black ; trochanters, bases of femora knees 

 tips of tibiae, tarsi and antenna! funiculi, except their clubs, yellowish-brown In 

 some specimens the mandibles are more or less infuscated, with paler masticatory 

 borders ; in certain individuals, also, the coxae are more or less yellowish like the 

 thorax. Vent* and sting brown or yellowish. 



Described from fifteen specimens taken by Mr. J. Chester Bradley 

 in Alta Meadow, Tulare County, Calitornia, at an altitude of g ^oo 

 feet. ^ 



This beautiful species may be readily distinguished from the allied 

 M. ruhida of Europe and nmtica of the western states by its color and 

 its glabrous and much more slender petiole and postpetiole. In both 

 the species mentioned the postpetiole is nearly as broad as long. 

 The epinotum of bradleyi is more angular than in mutica. and there- 

 fore more like the epinotum of rubida. This form also resembles 

 bradleyi in having the upper surface of the postpetiole smooth and 

 shinmg. There is in my collection a pale yellow variety of mutica 

 from Moscow, Idaho (J. M. Aldrich), with smooth and shining peti- 

 ole and postpetiole, but these segments are much more robust than 

 those of bradleyi. 



