162 tHE CANADIAN ENTOMOLOGIST. 



distance between the long bristle and the root of the antenna. Antennse 

 black ; second joint with a grayish pollen, and with a crest of short, stiff 

 bristles ; third joint long, with parallel sides, more than three times the 

 length of the second, not quite reaching the edge of the mouth. Eyes 

 distinctly pubescent. 



Ground color of the thorax bluish black, almost concealed by five 

 stripes of gray pollen, with intermediate black lines ; the gray stripes are 

 especially apparent when viewed obliquely from the posterior end of the 

 body ; in this light the median stripe appears bifurcate posteriorly ; the 

 next pair abbreviated posteriorly ; the lateral pair very broad anteriorly, 

 over the humeri. Scutellum bluish-black, with gray poUinose reflections ; 

 its tip faintly brownish ; on the hind edge there are six bristles, the 

 intermediate pair being the shortest ; above this pair, on the plane of the 

 scutellum, another similar pair. Pleurae, grayish poUinose. 



Abdomen black, marmorate with silvery gray ; the fourth segment 

 brassy-yellow. The whole abdomen is covered with dense short hairs ; 

 a pair of longer bristles near the hind margin of the first and second 

 segments ; a row of such bristles on the hind margin of the third segment, 

 and a double row at the end of the fourth. Legs black ; pulvilli brown ; 

 knees slightly brownish. 



Wings : the first posterior cell open (closed by the prolongation of the 

 costal vein, however, which nearly reaches the apex of the wing); the 

 distance between the tips of the second and third veins is a little longer 

 than that between the third vein and the apex of the wing ; the elbow of 

 the fourth vein without stump of a vein (a very minute one in one of the 

 specimens); the great cross vein oblique, parallel to the last section of 

 the fourth vein ; small cross vein (in most specimens) opposite to about 

 the middle of the distance between the tips of the auxiliary and first 

 veins. 



Bred from Vanessa atalaiita (T. W. Harris and S. H. Scudder). 

 Numerous specimens. 



Tachiiia (Exorista) bianda, n. sp. ^ . Gray, thorax with four black 

 stripes, the lateral ones broken in the middle ; palpi and legs reddish ; 

 second and third abdominal segments with an additional pair of ma- 

 crochetse in the middle. Length 7 m.m. 



Distribution of the frontal bristles as in £. ftitilis ^ , that is, on each 

 side, beginning with the vertex, three longer bristles pointing backwards, three 



i 



