46 PROCEEDINGS OF THE NATIONAL MUSEUM. 



distinct. The second sternite in some specimens bears a pair of tu- 

 bercles rather poorly developed but quite distinct; in other speci- 

 mens this sternite lacks these tubercles entirely. The eighth bears 

 a prominent discal spine. The wings are hyaUne and very long, 

 reachmg almost to the end of the abdomen and being more than 

 twice as long as the thorax and middle segment together. Variation 

 in the extent of the maculations is slight, yet there is some reduction 

 in the size of the spots on the thorax and median segment. When 

 the abdommal segments are closely drawn together the venter appears 

 almost entirely yellow. 



Habitat. — New Mexico, Arizona, Mexico. 



Number of specimens examined — Males, 11 ; females, 0. 



STICllELLA SCITULA Fox. 



Monedula scitula Fox, Proc. Acad. Nat. Sci. Phila., 1895, p. 369, female. 



Female. — Black: Labrum, mandibles except apices, clypeus, scape, 

 flagellum below, frons except a median black spot (shaped somewhat 

 like an expanded butterfly), connected laterallj^ above with a trans- 

 verse black stripe across the vertex, from which a stripe occupies the 

 pit of the anterior ocellus, broad posterior orbits broadly connected 

 across the vertex, prothorax, tegulac, broad lateral lines and U-shaped 

 discal mark, which may be broken into three spots, on scutum, large 

 lateral spots on scutellum approximated medially, fascia on metano- 

 tum, broad curved fascia on dorsum of median segment, broad lat- 

 eral angles and sides of median segment, sides and venter of thorax 

 entirely except the narrow lines of the sutures, broad fasciae on ter- 

 gitcs 1-5, first with a median anterior black spot, which in some 

 cases is comiected with the black on base of segment, second, third, 

 and fourth with wide, shallow, median, anterior emargination, 

 slightly extended backward at the posterior lateral angles, especially 

 on the second, fifth with anterior border undulate, apex of ultimate 

 tergite, sternites entirely, legs entirely, hright lemon yellow. 



LengtTi. — 10-11 mm. 



The flageUum is testaceous above, lightest at apex. The clypeus 

 and labrum are much Hghter in color than the rest of the body mark- 

 ings. The region posterior to the base of the mandibles, frons above 

 the antemiae, and the vertex are provided with long, dense, white 

 pubescence; the pubescence of the thorax and base of the abdomen 

 is shorter and more sparse. Altogether the pubescence is more con- 

 spicuous on tliis species than is common on females of this genus. 

 The pulvilli are large and distmct. The wings are hyaline, long, 

 reaching nearly to the end of the abdomen, and fully twice the length 

 of the thorax' and median segment combined. The species is of nor- 

 mal form, but in the case of many specimens the abdomen is abnor- 

 mally contracted, and it was from specimens of this kind that the 



