NORTH AMERICAN COLEOPTERA. 79 



brown, paler at base. Head closely punctate, a moderate median depression, 

 which is more or less piceous. Thorax twice as wide as long, slightly narrowed 

 in front, sides arcuate, base on each side oblique, hind angles distinct, disc 

 slightly depressed each side, surface closely punctate and opaque with three 

 spots, the middle one linear; elytra very little arcuate on the sides, the margin 

 somewhat explanate, humeri distinct, but obtuse; sutural angle obtuse, surface 

 closely and not very coarsely punctate, punctures finer at apex, a subsutural 

 vitta not reaching either base or apex ; a short, slightly arcuate vitta at base, 

 external to which are two vittfe, the outer one entire the inner abbreviated at 

 both ends. Body beneath similar in color to the upper surface, the metasternum 

 usually darker. Legs pale. Length .14 — .20 inch.; 3.5 — 5 mm. 



ilf«?e. — Last ventral segment deeply, but narrowly triangularly notched ; claws 

 widely bifid at tip. 



-Female.— La,st ventral more widely triangularly emargiuate; claws widely 

 bifid at tip. 



As in notulata and integra, the middle coxa are contiguous. The 

 punctuation is finer than in the former and a little coarser than in 

 the latter. The elytral markings approximate those of some varie- 

 ties of notulata, but a little experience will soon enable one to dis- 

 tinguish the two species. 



Widely distributed with notidata, but no specimens have been seen 

 from the Pacific coast. 



G. iiymphteie Linn., Syst. Nat. ed. x, 1758, p. 376; Oliv., Ent. vi, p. 643. 

 pi. 3, fig. 31; marginella Kby., Faun. Am. Bor. iv, p. 308; Lee, Proc, Acad. 1865, 

 p. 217; sagittarise Gyll., Kby. loc. cit. p. 219; femoralis Mels., Proc. Acad, iii, p. 

 161; luctiiosa Mann., Bull. Mosc. 1852, ii, p. 368. — Oval, slightly oblong, narrower 

 in front, subdepressed, piceous-brown ; thorax dull yellow, with three piceous 

 spots; side margin, apex and epipleurse of elytra yellowish, surface finely pubes- 

 cent. Antennae piceous, five or six of the proximal joints pale at basal half. Head 

 piceous, frontal region pale, vertex and occiput densely punctured and opaque. 

 Thorax twice as wide as long, sides rather strongly augulate, frontal angles small, 

 prominent; hind angles nearly obliterated, disc with a large depression each side, 

 which is densely punctured and piceous, a median narrow depression ; surface, 

 except in the foveas, smooth and glabrous ; elytra slightly broader behind, margin 

 distinctly explanate, humeri distinct, but obtuse; sutural angle acute, surface 

 coarsely and moderately closely punctate, much finer at apex. Body beneath 

 piceous, last ventral segment pale. Legs pale. Length .18 — .24 inch. ; 4.5—6 mm 



Male — Last ventral segment slightly emarginate at apex, with an oval, sharply 

 limited depression as in cavicollis, but smaller ; claws rather deeply bifid ; posterior 

 tibiae slightly arcuate. 



Female. — Last ventral slightly emarginate, with a feeble depression near the 

 middle of the apical margin ; claws deeply bifid, the inner portion much shorter. 



The middle coxse are comparatively widely separated by a pro- 

 longation of the mesosternum meeting the metasternum. 



Comparatively little variation has been observed in the specimens 

 examined. The thoracic spots are, however, very inconstant as to 

 size, but the coloration in other respects varies but little. 



TEANS. AM. ENT. SOC. XX. MAY, 1893. 



