June, '08] ENTOMOLOGICAL NEWS. 285 



while only five of them have spines on the ventral surface. 

 The ventral surface of the first segment bearing dorsal spines 

 is hidden by the tip of the wing sheaths. The dorsal portion 

 of the last segment is curved dorsally and ends in two very 

 strong spines. On the dorsal surface of the last segment near 

 the base there are two laterally projecting spines as on the 

 ventral surface. 



The breathing tubes are club-shaped, with a short, much 

 wrinkled stalk, and bear two longitudinal rows of foramina 

 along their dorsal surface. The segmentation of the antennae 

 shows distinctly through their semi-transparent sheath. 



Psychoda domestica n. sp. 



Body dark brown to black, clothed with long black hair, which to 

 the unaided eye gives the insect a distinct blackish appearance. Thorax 

 lighter than abdomen, and in some specimens the hair has a brownish 

 cast. Legs black with black hairs and scales, the latter on the hind 

 tarsi brownish. Wings long, rather acutely rounded at the tip of 

 second simple nervure ; evenly and well clothed with long black hair ; 

 posterior fringe black, about one-half the breadth of wing; anterior 

 fringe much narrower; dense tuft of long black hair on base of costa. 

 Anterior furcation one-sixth length of wing nearer tip than posterior ; 

 slightly beyond middle of wing. Female wing, length 2.25 mm. to 

 3.25 mm.; breadth, .75 mm. to i.oo mm. Male, length, 1.8 mm. to 1.85 

 mm. ; breadth, .65 mm. to .7 mm. Length of antennae about one and 

 one-half breadth of wing; i6-jointed; i, slightly longer than broad; 

 2, spherical ; 3-13, with basal enlargements and terminal pedicles, 

 which are slightly swollen in the middle; 14-16, much reduced and 

 closely applied to 13 and to each other; 3-16, with dense whorls of 

 smoky-black hairs ; 1-2, with shorter hairs and scales. Male genitalia 

 strongly developed ; superior pair about as strong as inferior ; two- 

 jointed; basal quite strong, slightly longer than broad; second twice 

 as long as first, slightly expanded at base, weaker distally where it 

 terminates in a very acute claw ; inferior genitalia one-jointed, greatly 

 expanded at base, but tapers rapidly to tip, which bears a single long, 

 strong papilla about one-half the length of the segment. Ovipositor 

 and ventral plate yellowish brown ; ventral plate broader than long, 

 with broad emargination behind reaching half way to base; ovipositor 

 as long as breadth of plate, much curved ; plate and base of ovipositor 

 armed with short hair. 



Habitat : Columbia, Missouri ; bred in laboratory from De- 

 cember Qth to March 2Oth. 



