NORTH AMERICAN COLEOPTKRA. 61 



jfl. coryli Say, Jouin. Acad, iii, p. 455; ed. Lee. ii, p. 220. — Oval, moderately 

 convex, broader behind, yellowish testaceous, elyti'a metallic-blue, with a broad> 

 transverse testaceous band at middle, broader at suture and sides. Antennae 

 pale brown. Head sparsely punctate, with a median impressed line from the 

 occiput to the labrum, transverse impression feeble. Thorax more than twice as 

 wide as long at middle, apex emarginate, base truncate, sides regularly arcuate, 

 the margin slightly refiexed posteriorly, anterior angles slightly prominent, hind 

 angles obtuse, disc transversely depressed, surface sparsely finely punctate ; elytra 

 twice as long as wide at base, dilated behind the middle, surface punctate, but 

 less distinctly at apex and base. Body beneath and legs dull testaceous, the ab- 

 domen often darker. Length .40 — .60 inch.; 10—16 mm. 



3Iale. — Last ventral segment broadly and deeply transversely emarginate, a 

 slight fovea at the apex of the notch. 



Female. — Last ventral broadly, but not deeply emarginate. 



I'his species varies greatly in size, and I think I have seen speci- 

 mens larger than the measurements given above. The normal col- 

 oration is that described above, but specimens occur with less blue, 

 and some almost entirely yellow. 



Occurs in Virginia, Illinois and Kansas. 



HAL,TI€IDEA n.g. 



Head oval, not deeply inserted, the eyes oval, prominent and free, 

 frontal tubercles distinct, not prominent ; a transverse groove between 

 the eyes ; labrum transverse, faintly emarginate ; maxillary palpi 

 short and stout, the terminal joint conical, longer than the preceding 

 joint. Antennae slender, nearly half the length of the body ; first 

 joint slightly clavate, twice as long as the second, this a third shorter 

 than the third joint, fourth joint scarcely. longer than third, joints 

 five to ten slightly shorter, eleventh longer and acute at tip. Thorax 

 more than twice as wide as long, sides arcuate, hind angles not dis- 

 tinct, disc convex, with a median transverse impression, sometimes 

 indistinct or obliterated at middle ; elytra oval, slightly oblong, the 

 epipleurjB distinct in front, but becoming internal behind the middle ; 

 anterior coxal cavities narrowly closed behind, the prosternum not 

 visible between the coxae. Legs moderate in length, the tibiae scarcely 

 broader at tip, the outer edge finely grooved, no terminal spurs ; tarsi 

 rather stout, the first joint about equal to the nex two ; claws strong, 

 deeply bifid, the portions widely divergent. Bojody glabrous. 



This genus is proposed for several small species which might 

 readily be mistaken for Haltlca by their facies. Among the groups 

 suggested by Chapuis it seems best placed in the Galerucites by its 

 entire anterior coxal cavities, unarmed tibise and bifid claws, although 

 it differs from them in its glabrous surface. 



TKANS. AM. ENT. SOC. XX. APRIL, 1893. 



