36 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 52. 



On both sexes the flagellum is testaceous below with the first and 

 second segments yellowish. The ultimate segment is conical at the 

 apex and on the male is slightly curved. The pulvilli are indistinct 

 in both sexes and the pubescence is decidedly short and sparse; the 

 female is almost nude. The wings are hyaline and long, the veins 

 brown. On both male and female the fasciae on tergites 1-5 are 

 slightly notched on posterior middle and on the males the anterior 

 emargination on the third fascia may take the form of a pair of 

 median spots similar to those on the preceding fascia. On some 

 males the clypeus lacks the black basal border and the posterior 

 orbits may not be connected across the vertex. Two females from 

 Arizona (collected by F. H. Snow), which I have referred to this 

 species are extremely yellow; the pro thorax, sides, and venter 

 of mesothorax and metathorax, median segment, first four tergites, 

 and the first two sternites, are entirely yellow. It is a beautiful 

 species, and owing to its large size and bright colors it is not likely 

 to be confused with any species except tenuicomis, from which it 

 can be readily distinguished by the absence in this species of dis- 

 tinct pulvilli in both sexes, by the absence of long spines on the 

 lateral areas of the ultimate tergite of the female and by the pres- 

 ence of the serrate femora and curved metatarsi of the middle legs 

 and the unituberculate second sternite of the male. 



Habitat. — New Mexico, Arizona. 



Number of specimens examined — males, 4; females, 3. 



Type.— Male, Cat. No. 19806, U.S.N.M. 



STICTIELLA BITUBERCULATA, new species. 



Figs. 57, 58, 86, 104. 



Monedula tenuicomis Fox, Proc. Acad. Nat. Sci. Phila., 1895, p. 369, male (not 

 female). 



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

 below, lower part of frons, broad anterior orbits, broad V-shaped 

 spot inclosing anterior ocellus, posterior orbits broad below but 

 narrower above, a rather narrow line across the posterior border of 

 pronotum, sides of prothorax except a dusky line in front of tubercles 

 and a small round lateral spot above this line, tegulae, weak lateral 

 lines above tegulae on scutum, lateral spots on scutellum, fascia on 

 metanotum, curved fascia on dorsum of median segment, sides and 

 lateral angles of same, metapleurae, mesopleurae almost entirely, 

 mesosternum except small lateral spots in front and slightly above 

 middle coxae, fasciae on tergites 1-6 are more or less perfectly 

 broken into large rectangular lateral spots, and. a pair of ellipsoidal 

 medial posterior spots, apex of seventh tergite, sternites entirely 

 except small lateral spots of first and small medial spots on 3-6, 

 coxae, trochanters below, femora except broad stripe above, tibiae 



