Cresson.] 170 [Docenibor 2. 



ceiioe, that on mesotborax shortest ami mixed with sparse bhick hairs, 

 giving the surface a niacuhite appearance; scuteUum with short black 

 j)ubescence, margined entirely with whitish; metathorax and pleura 

 ■with mixed black and hoary pubescence, long on the former; base of 

 metithorax coarsely reticulated or crennlated; teguhe black, polished; 

 v,-ings hyaline, nervures black, a small blackish spot beneath stigma, 

 and a larger one at tip of marginal cell, the nervures at apex of both 

 Avings margined with fuliginous; legs robust, black, with short, dense, 

 hoary and black sericeous pubescence; abdomen short, broad, robust, 

 convex, shining, closely punctured, with short black pubescence, 

 longer and more obvious on apical segments; base of first segment 

 v/ith rather long, thin, hoary pubescence; a,pical margin of all the 

 segments, except last, with a narrow fascia of white pubescence, 

 sometimes more or less interrupted above; apical ventral segment 

 sometimes fulvous. Length five lines. 



Hah. Orizaba, Mexico. Prof. F. Sumichrast. (Coll. Am. Ent. 

 Soc.) 



Readily distinguished by the maculate wings. 



14. C. SUbmarginata Cresson, Proc. Ent. Soc, iv, p. 167, 9. 

 This is short, robust, black; head clothed with whitish pubescence, 

 long on the cheeks, and mixed vvith black on vertex; (lagellura dull 

 testaceous beneath; thorax rather densely clothed with short hoary 

 pubescence, that on upper surface much intermixed with black, that 

 on scutellum mostly black, that on sides of metathorax long, and on 

 jjleura rather sparse and short; tegulaj pale piceous; wings hyaline, 

 faintly dusky at apex; legs piceous black, the four anterior femora 

 clothed with long whitish pubescence, that on tarsi and posterior legs 

 short and brownish; posterior femora and tiblaj unusually robust; 

 tarsal tips rufo-testaceous; abdomen ovate, convex, polished, black, 

 with a slight opaline iridescence, delicately punctured, base of first 

 segment with a thin hoary pubescence ; apical margin of the segments 

 narrowly fringed with white pubescence, widely interrupted centrally 

 on three basal segments. Length five and one-half lines. 



(5 more slender than ? , the pubescence longer, antennas longer and 

 entirely black, thorax less densely punctured, legs slender, the pubes- 

 cence lung and whitish, and the abdominal fascia; very slightly inter- 

 rupted. Length five lines. 



Ihih. Cuba. Prof. P..ey ? ; Dr. (nmdlach <I . (Coll. Am. Ent. 

 Soc.) 



15. C. mexicana, n. sp. 9. Very closely resembles C swi/war- 

 (jiiia a in sli:i])e and color, and may be at once distinguislied by the 



