NO. 19?.0. DESCRIPTION' H OF NEW HAWPLIES—ROEWER. 233 



with distinct separate punctures; supraclypeal foveas deep, punctiform, 

 not confluent with the antennal fovese; supraclypeal area rectangular 

 in outline, convex; middle fovea triangular, more sharply defined 

 above; ocellar basin large, extending to the crest, rounded below; 

 postocellar area convex, slightly impressed medially, more than twice 

 as wide as long; antennal furrows complete to near occiput where 

 they are punctiform; third antennal joint longer than the fourth joint 

 by about half the length of the fourth joint; scutellum more closely 

 punctured than the scutum, lobe polished, shining; stigma long, 

 angled near base, tapering to apex; sheath concave above, apex 

 sharply pointed, obliquely truncate, lower margin broadening basally. 

 Black; angles of pronotum, tegulae, legs below coxae white or whitish; 

 lateral margins of prescutum, part of pronotum, upper part of meso- 

 episternum, and sides of abdomen rufo-piceous. Wings hyaline, 

 slightly dusky; venation black. 



Male. — Length, 5 mm. Differs from the female in color as follows: 

 Rufo-piceous markings wanting; legs largely piceous, paler at joints. 

 Hypopygidium broadly rounded apically. 



Forest Hills, Boston, Massachusetts. Females and males sent by 

 Dr. W. M. Wheeler, who states that the insect "has been very destruc- 

 tive to one particular tree on the Bussey grounds, almost completely 

 defoliating the lower branches." The tree is one of the white oaks, 

 probably Quercus macrocarpa. 



Type.— Cat. No. 14554, U.S.N.M. 



PERICLISTA ALBICOLLIS (Norton). 



Selandi-io. albicollis Norton, Trans. Amer. Ent. Soc, vol. 4, 1872, p. 85, male. — 

 Cresson, Trana. Amer. Ent. Soc, vol. 4, 1872, p. 155; vol. 8, 1881, p. 42. 



Phymatocera albicollis Kirby, List Hym. Brit. Mus., vol. 1, 1882, p. 1G5. — Dalla 

 Torre, Cat. Hym., vol. 1, 1894, p. 177. 



Periclista albicollis Dyar, Joum. New York Ent. Soc, vol. 7, 1898 (June), p. 130. 



The type of this species seems to be lost; at least it is not in Phila- 

 delphia or New Haven. A female from the Belfrage collection is in 

 the National Museum. It agrees well with Dyar's determination of 

 the species. In the foregoing discussion this is taken as the correct 

 interpretation of the species. 



Subfamily SKIlijSLlSriDRIIJSrjE:. 



In some of the oriental members of this subfamily in which the 

 thorax is black it appears on first examination that the prepectus 

 is wanting, but by careful study or by the aid of a drop of chloroform 

 it can be made out. The venation in those in which trouble has been 

 experienced is that of Stromboceros and allies, so no trouble should be 

 had. It may be that tliis group will be better divided on characters 

 of the metapleurss, but at present not enough of the genotypes are 



