THE CANADIAN ENTOMOLOGIST. 271 



punctured and with a short median, unpunctured groove extending about 

 one-third its length from its anterior edge. A small, somewhat triangular 

 spot of golden pubescence is situated on the pleuron just posterior to the 

 prothoracic lobe, and sometimes a smaller one occurs between this and 

 the wing attachment. Tegulas smooth, pale yellow. Mesopleura and 

 sternum covered sparingly with long yellow hairs. Scutellum black, 

 punctured, the punctures rather more scattered than on the mesonotum ; 

 on each side just mesad to the attachment of the hind wings is a golden 

 pubescent spot. Postscutellum covered by golden pubescence. Median 

 segment coarsely punctured, on each side a golden pubescent band passes 

 from the front edge just lateral to the edge of the pubescence on the post- 

 scutellum backward below the stigma to the posterior coxa, Just above 

 the base of the petiole is a golden pubescent spot. 



Abdomen : petiole slightly curved, ferruginous yellow, somewhat 

 darker at the base beneath, covered with yellowish hairs; its posterior 

 portion yellowish pubescent. Base of abdomen above, yellowish, remain- 

 der black, the hinder edges of the segments, however, dull yellowish ; 

 surface finely pale pubescent. A few hairs scattered over the more 

 posterior segments. Beneath, minutely punctured, with scattered hairs in 

 the female, in the male with a cross row of black hairs on each of the last 

 three or four segments. Legs : coxse, trochanters and proximal part of 

 femora black, hairy, remainder ferruginous. .Sometimes a yellowish 

 pubescence is present on the coxa^ and trochanters. Tips of claws nearly 

 black. Spines dark ferruginous. Posterior tibia^ yellow pubescent 

 behind. Wings smoky, with a slight violet reflection. 



Length, 16-20 mm. Wing expanse, about 30 mm. 



Described from five male and two female specimens from Indian 

 River and Biscayne Bay, Fla., and from N. C. and Ga. Types have been 

 deposited- in the collections of the National Museum at Washington, 

 American Entomological Society at Philadelphia, Massachusetts Agricul- 

 tural College, Amherst, Mass., and of Mr. W. H. Ashmead, Washington, 

 D. C. 



Isodoiitia macrocephala, var. cinerea, n. var. 



This variety differs from the typical form only in the fact that the 

 thoracic hairs are longer and whiter, giving the insect a noticeably gray 

 appearance very different from that of the typical form, which is glossy 

 black, the few gray hairs not modifying this, and, in fact, being generally 

 overlooked unless the body is closely examined. 



