THEODORE H. FRISON 29 



Head below antennae slifjlitly convex, cephalic margin of clypeus iin- 

 jjunctate and polished., remainder of area moderately punctate, the punctures 

 ventrad somewhat arranged in ohli(jue-lonsitu(hnal rows; a small tubercle 

 on face, connected with antennal basin by a slightly swollen ridge; antennal 

 basin limited below by a slightly swollen punctate ridge, area between antennae 

 faintly elevated in middle and polished; malar si)ace not distinctly separated 

 from face by a carina, less than one-fourth as long as eye, nearly twice as long 

 as pedicel, finely wrinkled; occipital orbits broad, wider below than above, 

 finely punctate and somewhat finelj^, longitudinally wriid-cled; mandibles 

 with a few scattered, moderately-sized punctures on proximal half, with 

 numerous pale setae. Head above antennae nearly flat, moderately and 

 densely punctate, a small longitudinal carina extending a short distance 

 below median ocellus. Head viewed from above scarcely broader than thorax, 

 transversely subquadrate, slightly convex in region of antennal fossae; viewed 

 from the front with eyes almost parallel; ocelli arranged in a triangle, lateral 

 ocelli somewhat farther apart than distance from inner margin of eye; with 

 numerous whitish-yellow setae occurring from cephalic margin of clj'peus to 

 half way between articulation of antennae and median ocellus, those about 

 and dorsad of ocelli sparse and more erect. Antennae inserted somewhat 

 farther apart than distance from inner margin of eye, far below middle of eyes; 

 scape about four times as long as distance from its articulation to inner margin 

 of eye, four times as long as pedicel, almost equal to length of the pedicel and 

 first flagellar segments together; pechcel about one-fourth the length of first 

 flagellar segment; flagellar segments of nearly equal thickness throughout, 

 first flagellar segment longer than either the second or third. 



Alitrunk one-third longer than broad, somewhat longer than high; with 

 numerous pale setae, unusually long on ventral portions. Pronotum forming 

 a distinct collar when viewed from above, cephalic margin strongly cariiiate; 

 humeral angles angular. Mesoscutum with deej) parapsidal grooves, slightly 

 intermitted anteriorly by weak transverse ridges; lateral grooves distinct, 

 but weakly impressed; cephalic portion with a few large and numerous minute 

 punctures, besides some weak transverse wrinkles; caudal portion polished, 

 minutely punctate. Mesoscutelkun separated from mesoscutum by a narrow 

 transverse suture and a few small adjacent punctures; disk polished, with 

 several large scattered puruitures; lateral margins with several longitudinal 

 rows of coarse, often confluent punctures. IVIetanotum narrow, deeply im- 

 j)r(\ssed, with a row of large subquadrate punctures. Propodeuin above 

 cephalad of articulation of petiole with irregular {junctures of moderate size, 

 shar])ly and abrujjtly limitetl by reticulations of lateral aspect. Propleura 

 concave, oblicjuelj- longitudinally wrinkled, minutely punctate. IMesopleura 

 with ventral portion of anterior swelling minutely punctate, dorsal i)ortion 

 coarsely punctate; dorso-cephalic portion of sulcus and area adjacent to pro- 

 pleura pDJisluMJ, impunctate; polished area bordered above by a narrow band 

 of small ptmctures adjacent to interpleural suture and impres.sed, wrinkled 

 cephalo-dorsal angle. Metuiuipleura with its cephalo-dorsal angle forming 

 a finely punctate triangular area; sulcus shallowiy imiiressed, without a 



TRANS. AM. ENT. SOC, XLVIII. 



