38 THE CANADIAN ENTOMOLOGIST. 



the intermediate space. Thorax brown with broad white stripes. Scu- 

 tellum brown with black hairs. Abdomen brown with two broad white 

 stripes of sub-equal width with the space between. Hind margin of seg- 

 ments white. Venter dark, covered with gray pollen, hind margins white. 

 Feet yellowish, base of femora and tips of tarsal joints infuscated. Wings 

 hyaline, costal cell and stigma pale yellow. Veins brown. First cell open. 

 Nine £ received from Mr. G. M. Dodge, Glencoe, Nebraska, to 

 whom the species is affectionately inscribed. 



Tabanus sparus. 



£ . Length 9-1 1 m. m. Palpi yellowish-white with a few short white 

 and black hairs. Face gray with white pollen. Antennae fulvous, third 

 joint compressed, upper angle obtuse, annulate portion black, short. Eyes 

 large, naked, unicolorous, dark green with a purple reflection. Front 

 coarctate, gray, no ocellar tubercle. Callus rectangular, a connate line 

 above. Thorax brown with light gray stripes. Scutellum concolorous. 

 Abdomen dark brown, the segments with white margins, the central tri- 

 angles smaller than the oblique lateral ones, which are frequently discon- 

 nected from the margin on the posterior segments. Venter dark fulvous, 

 black posteriorly, segment margins white. Legs varying from blackish 

 brown to pale yellow, the base of tibiae being lightest. Wings hyaline; 

 stigma pale yellow. First cell open. 



Milford, N. H. June and July. Abundant. One $ , Prof. F. G. 

 Sanborn, same locality, resembles $ closely, but the black on abdominal 

 dorsum prevails and the tip of venter is darker. 



This species resembles pumilus Macq., but is larger; the spots on 

 second segment coalesce with the margin, the eyes are unicolorous, while 

 pumilus has two bright green parallel stripes on purple ground. 



Parasite on the Common House-fly.— Prof. Leidy recently stated 

 that in examining various common animals of our household, he found a 

 thread-worm infesting the house-fly. The worm is from a line to the tenth 

 of an inch in length, and lives in the proboscis of the fly. It was found 

 in numbers from one to three in about one fly in five. This parasite was 

 first discovered by Mr. H. J. Carter, the well-known naturalist, in the 

 house-fly of India, who described it as Filaria viuscce. — Science- Gossip. 



