270 



dusky. Wings hyaline, veins light brown, distinct. Described from one female 

 specimen reared from a female Icerya purchasi at Los Angeles, Cal., July 6, 1887, by 

 Mr. D. W. Coquillett. 



Fig. 60. — Encyrtus ditbius, Howard— enlarged (Original). 



ENCYRTUS DUBIUS, sp. liov. 



Male. — Length, L2""" ; expanse, 2.'<J'""' ; greatest width of fore wing, 0.37™™. Scape 

 of antennae long, thin, cylindrical, together with bulla as long as hrst three fuuicle 

 joints; pedicel short, conical; joint 1 of fuuicle longer than pedicel ; joint 2 slightly 

 shorter than joint 1 ; joints 2 to 6 subequal in length and width, each constricted at 

 either extremity ; club ovate, one-third longerthanjointG of funicle, but not exceeding 

 this in width; funicle and club with hairs at least as long as the joints themselves> 

 but not arranged in regular whorls. Marginal vein of fore wings lacking; postmar, 

 ginal equal in length to stigmal. Head, mesoscutum, and scapuhe very delicately 

 shagreened ; mesoscutellum with regular fine longitudinal ridges. Metanotal spi- 

 racles circular. Abdomen ovate, slightly longer than thorax, and equal to it in 

 width. General color, brown, glistening ; head and mesouotum with greenish metal- 

 lic luster; antennse and legs light brown, base of tibite whitish. Wings hyaline, 

 veins brown. 



Described from one g reared from Iceri/a purchasi at Los Angeles, Cal., September 

 3, 1887, by D. W. Coquillett, issuing in a box which contained only adult females of 

 the scale. 



Differs in antennae and sculpture of scutellum from any <? Eucyrtus which I have 

 seen. As the 2 has not been reared, this may prove to belong to some allied genus, 

 hence the specific name. 



A CONTRIBUTIOJl TO THE HISTORY OF THEOPHILA MANDARINA. 



By Philip Walker. 



Desiring about two years ago to obtain some information about the wild 

 mulberry-feeding silkworm of China, the TheophUa mandarina, which 

 had excited some-attention in Europe, the Commissioner of Agriculture 

 requested the Secretary of State to instruct the consul-general of the 

 United States at Shanghai to examine into the matter and obtain sam- 



