1865.] 107 



on each side; apical searaent flattened, mibquadrate. truncate at tip, 

 with the apical anjiles acute ; the venter has a transverse reddish-brown 

 stain on the apex of the second and one or more of the following seg- 

 ments. Length 6 — 8 lines; expanse of wings 10 — 12i lines. 



Hah. — "Arkansa," (Say); Illinois, (Dr. Samuel Lewis and Mr. 

 Walsh.) Coll. Ent.Soc. Philad. 



One 9 , six % specimens. This is doubtless the Philanfhus zonatus 

 of Say, although he says nothing of the broad yellow bands on the 

 two basal segments of the abdomen. 



2. Eucerceris laticeps, n. sp. 



Black : spot on each side of face and posterior orbits 9 . base of antenna;, and 

 mandibles except tij>s ferruginous: face of 'J, , interrupted line on collar, spot 

 on each side of metathorax. and interrupted bauds on first and second abdomi- 

 nal segments, yellowish : legs honey-yellow ; wings fusco-hyaline, much darker 

 on the anterior margin. 



Female. — Black, opaque, very closely and deeply punctured, clothed 

 with a very short indistinct golden pubescence; head very wide, and. 

 as well as the face and mandibles, shaped as in the preceding species ; 

 an irreo-ular triangular mark on each side of the face, a spot on middle 

 of clypeus, mandibles except tips and upper margin, and broad poste- 

 rior orbits, rufo-ferruginous ; antenna; slender, black, the three basal 

 joints fulvous. Thorax shaped and sculptured as in the preceding 

 species ; a narrow interrupted line on the collar, and an ovate spot on 

 each side of the metathorax, obscure whitish ; postscutellum faintly 

 tino-ed with brownish ; tegulse testaceous, with a yellow spot in front. 

 Wings colored as in the preceding species. Legs bright honey-yellow; 

 coxEe, trochanters and base of the femora behind more or less blackish. 

 Abdomen shaped as in the preceding species, black ; first segment 

 with abroad sub;t]3ical yellow band, slightly interrupted in the middle; 

 second segment with a subtriangular yellow spot on each side at tip ; 

 apical segment tinged with brownish, upper surface flattened with the 

 sides acutely carinated and the tip obtuse ; beneath piceous, shining, 

 with the apical margins of the segments more or less brownish. liength 

 7 lines; expanse of wings 12 lines. 



j/ale. — Differs from the female as follows : — the head not so broad ; 

 the face beneath the antennae is yellow, this color extending upwards 

 on the anterior orbit for a short distance above the insertion of the 

 antennae; between the antennae there is a longitudinal yellow line 

 almost reaching the anterior ocellus ; the clypeus has a small black 

 line on each side of the middle lobe, with the three teeth at tip also 

 black ; the collar and metathorax are immaculate ; the wings are clearer 



