379 



said that the dorsum of the thorax is buff, having three fine whitish 

 Hnes, upon which there is a row of closely set pale hairs. In some 

 lights the anterior part] of the thorax, a space in front of the scutel- 

 lum, and the scutellum have a whitish sheen. Pleurae with three 

 brownish bars or spots. Abdomen pale yellow ; near the anterior 

 margin of each segment is a transverse row of brown spots, which 

 are sometimes confluent and form bands. Legs, including coxae, 

 cream-white, the hairs pale, apex of each tibia with a very minute 

 black comb with one tooth prolonged into a spur. Fore metatarsus 

 more than three fourths as long as its tibia. Wings with a brown 

 cloud covering the cross veins, a larger, paler cloud at the tip of Ri 

 extending nearly across the wing, but very faint beyond the media; 

 a third faint cloud at apex of posteria branch of cubitus, extending to 

 media ; a fourth very faint one in the anal cell. Halteres white. 



Female. — Differs from the male in having pale yellow antennae ; 

 palpi sometimes pale; abdomen yellow, the posterior margin of the 

 segments with a whitish sheen. (Abridged from Johannsen's descrip- 

 tion.) 



Length, 3.5-4 mm. 



This European species has been recorded from New York by 

 Johannsen, and a single larva taken from the Illinois River at Grafton 

 in 1913 agrees with the description of the larvae from which Johannsen 

 reared his specimens. I have seen one male specimen belonging to the 

 collection of the Academy of Natural Sciences, Philadelphia, taken at 

 Westmont, N. J., April 5, 1901. 



II. Tanypus dyari Coquillett 



Tanypus dyari Coquillett, Ent. News, Vol. 13, 1902, p. 85. 



Larva. — Length, 8-9 mm. Blood-red. Head about one and a 

 third times as long as broad; antenna less than half as long as head 

 (PI. XXVI, Fig. 11); palpi half as long as mandibles; mandible 

 strong, apical tooth blackened, the teeth along the inner dorso-lateral 

 edge distinct (PI. XXIV, Fig. 18) ; hypopharynx (PI. XXVI, Fig. 3) 

 brown, showing as distinctly as that of Protenthes ciiliciformis; labium 

 with 4 teeth (PI. XXV, Fig. i), the lateral process with long fringe. 

 Anterior pseudopods without strong apical claws; abdominal seg- 

 ments with numerous long, pale hairs laterally; posterior pseudopods 

 with the two circles of claws pale brown, one circle much stronger 

 and shorter than the other (PI. XXVI, Fig. 5, shows one of the 

 strong claws) ; papillae of the dorsal tufts about four times as long as 

 their diameter; dorsal tuft consisting of twelve sensory hairs; a dis- 



