612 THE BOTHRIOTHORACINE INSECTS— HOWARD. tol.xvii. 



liead resembles that of Chalcaspis; the ocelli are similarly placed, tlie 

 eyes are shorter, more rouuded, and hairy; facial depression well 

 marked, geual sulcus plain but not widely opened at eye-border, as in 

 Chalcaspis. Mesoscutum is nearly as long as scutellum; axilhie are 

 very difficult to distinguish and are widely separated at tips; scutum 

 and scutellum rather closely punctate, with plain shagreening in addi- 

 tion. Scutellum rather flat, margined round entire free border, and 

 with a delicate central longitudinal carina. Antenna^ resemble those 

 of BothriotJiorax. Forewings broad and rather short, stigmal given 

 off before snbinarginal reaches costa, postrnarginal about as long as 

 stigmal; both, however, short. Radial angle narrow. Abdomen, 

 short, triangular, rather sharjily pointed at tip. 



PENTELICUS ALDRICHI, new species. 



Female. — Length, 1.5 mm. ; expanse, 2.S mm.; greatest width of fore- 

 wing, O.G mm. Puuctation of front divides at top of facial depression 

 and runs in a narrow band down below each eye. Walls of facial 

 depression faintly shagreened, the shagreening continuing in a longi- 

 tudinal manner upon the cheeks, each side of the genal sulcus and so 

 around upon the occiput. Mesoscutum with punctures lacking upon 

 its anterior border. Teguli^ smooth; abdomen smooth; mesopleura 

 faintly shagreened. Antenna^ with indistinct joints, funicle joint one 

 nearly as long as pedicel ; funiclejoints subequal m length, but increas- 

 ing in width to flattened and very obli(piely truncate club, which is as 

 long as two x>i'eceding funiclejoints together. General color somewhat 

 metallic greenish-black; face highly metallic, with greenish-bronzy 

 reflections, facial depression witli bright green reflections; mesonotum 

 much duller. Teguhe black, autennai dark brown or black, scape honey- 

 yellow. All fenKunx and tibiiie black, with yellowish extremities: tro- 

 chanters yellowish; tarsi Tight honey-yellow, with black apical joints. 



Described from one female specimen collected in South Dakota by 

 Mr. J.M.Aldrich. Type m the U. S. National Museum. 



Genus P H .E N O I) I S C U S, Foe r s t e r. 



PJifDiodiscKS, FoERSTKR, Hymenopterologisclie Stndien, ii., 1856, ji. 144. 

 Discodcs, FoK.KSTER, Hymeuopterologisclie Studieu, ii, 1856, ji. 32— Suellen 



v.\N VoLLENHOVEN, Scbetseu, 1871, Tab. vii. 

 Plumodiscus. Thomsox, Hymenoptera, Scandiuavi;i', iv, 1875, p. 136. — Mayr, 



Europaiscbe Encyrtiden, 1875, p. 83. 



No American species of this genus have yet been found. So many 

 European genera, however, have already been recognized that it is 

 probably only a question of time before species of this genus will be 

 found to occur in the United States. I know the genus only through 

 a single male specimen of P. rt'^ews, Dalman, given to me by Dr. Mayr, 

 and am therefore obliged to repeat here this author's comprehensive 

 description of the genus. 



Female. — Body short, moderately broad; antennae inserted not far 



