W. L. MV ATEE 285 



Type— 9 ; Halifax, Nova Scotia, August 5, 1917, on eltn, [N. 

 S. Dept. Agriculture. 



Paratijpes — Same data, also, same locality, Sept. 1, 1917, [N. 

 S. Dept. Agriculture; W. L. M.]. 



Erythroneura dentata CJillette 



Typhlocyha dentata, Gillette, C. P. Am. Typhlocybinae, 189.S, pp. 7(>.'3 t(i 7()G, 



figs. 130 to 131. [Folsom, California.] 



Ground color stramineous, markings pale yellow to orange yellow, as 

 follows: two pairs of flecks on vertex the posterior larger, a pair of large 

 roundish spots on disc of pronotum, angles of scutellum, a wide vitta on clavus, 

 another on corium, and parts of radial margin of tegmen; costal plaques not 

 evident. Underside and legs of ground color, almost unicolorous, claws dark 



The last ventral segment of the female is more produced than usual in 

 the genus and more or less notched in all the specimens so far examined; in 

 one of the two specimens available for the present study, the notch is merely 

 a shallow emargination, in the other it consists of two divergent slits border- 

 ing a central tongue or tooth which reaches almost to the posterior edge of 

 the segment. The value of such notches for taxonomic purposes is question- 

 able; it has been suggested more than once that they are made din-ing coi)u- 

 lation, a view which is supj)orted by their variability. 



Length, 3.36 mm.; vertex: LM 8, LE 5.5, WA 9, WP 25; OA S, OP 14, 

 OH 20; iironotum L 13, W 26; tegmen 17-70. 



Type and pamtype — (3.46 mm.), l)oth females, Folsom, Cali- 

 fornia, August 7, 1885, [Type no. 3453, U. S. N. M.]. 



Erythroneura abolla new species 



A species with a wide, fourth apical cell, distinctly angulate at 

 base, and with a comparatively ])lunt vertex (fig. 3), easily dis- 

 tinguished from the three other. species in its group l)y the char- 

 acters given in the key. The present species has a number of 

 color varieties, two of which resemble in appearance parallel vari- 

 eties of E. ohliqua. However the blunter vertex and angulate, 

 not smoothly curved, base of fourth apical cell identifies them with 

 E. abolla. 



With little doubt a variety of this species is the form Gilk^tte 

 speaks of in connection with E. ohliqua, as having been found 

 among Hart's Illinois material, "having the red coloration almost 

 evenly diffused over the vertex, pronotum, scutellum and ant- 

 terior two-thirds of the elytra. "^ I have seen the species in the 



"^Gillette, C. P., Am. Typhlocybinae, 1898, p. 758. 



TRANS. AM. ENT. SOC, XLVI. 



