224 Fiftieth Report on the State Museum 



Fore coxa nearly three-fourths the length of the femur or tibia; tarsi 

 longer, first segment nearly as long as the remaining four; middle legs 

 about as the fore legs; posterior tibia longer than the slightly elongated 

 femur; first segment of the tarsi, equal to the remaining segments, h'tjjljf 



Abdomen of both sexes sparsely invested with setae. That of the 

 female enlarges to the fourth segment from which it tapers to the slender 

 ovipositor. Terminal portion of the genital plates oval. 



Abdomen of the male nearly cylindrical and bearing the usual en- 

 larged segment with claspers which are terminated by single stout 

 curved spines. The whole of the terminal segment is more setose than 

 are the preceding segments, especially the claspers on their tips and 

 inner margins. On the median line of the ventral sclerite there is a 

 thick group of stout setae. (PI. VI, Fig. ii.) Near the basal third of 

 the clasper there is a very long seta, extending nearly to the median 

 line. There is also a pair of long, stout setae, a dorsal and a ventral 

 one, at the base of each clasper. 



Length: male, body, 2.5 mm., wing, 2.4 mm.; female, body, 3 mm., 

 wing, 2.8 mm. 



This species was reared by Dr. Smith from mushrooms. 



The specimens reared by him from decaying potatoes resemble the 

 preceding species in many ways; however, on further study it was found 

 to be quite distinct. Its description follows: 



SciARA pauciseta n. sp. Head, thorax and abdomen black; anten- 

 nae light brown with a thin whitish pubescence; palpi hght brown; 

 wings hyaline, somewhat iridescent, anterior veins nearly black; 

 halteres fuscous apical ly, yellowish at the base; coxa and femur yellow- 

 ish, tibia darker, tarsi nearly black. 



Antennae longer than head and thorax; basal segments enlarged, 

 first, cuboidal; second, globose; third, about one-fourth longer than 

 fourth ; fourth to fifteenth nearly cylindrical ; proximal segments barely 

 twice as long as thick ; distal, nearly two and one-half times as long as 

 thick ; apical segment nearly conical. Paipi : basal segment short ; 

 second elliptical oval, apically with a large sensory pit; third subellipti- 

 cal, one-third shorter than either preceding or terminal segment; fourth 

 slender; each with a few large setae and numerous minute ones, which 

 have a verticillate arrangement on the third and fourth segments. 



Thorax with scattering hairs on the scutum of the mesothorax; the 

 three rows of minute setae are easily seen on its surface in some speci- 

 mens. 



Wings: subcosta (ist longitudinal) short, not extending to the fork of 

 the second branch of radius (3d longitudinal) and media (4th and 5th 

 longitudinals). First branch of radius (2d longitudinal) joining costa 

 before the fork of media near the middle of the length of the wing and 

 joined beyond its middle to the second branch by the short cross- 

 vein. Tip of second branch of media (5th longitudinal) nearer apex 

 of wing than is the point where the second branch of radius joins 

 costa. The two branches of cubitus (6th and 7th longitudinals) and the 

 second branch of media reaching the margin of the wing nearly equi- 

 distant. Anal vein (8th longitudinal) two-thirds the length of the second 

 branch of cubitus in the female, in the male it is but one-half (PI. VI, 

 Figs. 3, 4.) 



