128 GEO. H. HORN, INI. D. 



Occurs from eastern Pennsylvania westward to Kansas, Dacota 

 and Montana, and soiith to Georgia and Texas. Dr. Hamilton takes 

 the gentiUs variety on Robinia pseudacacia as well as by sweeping 

 low herbiage. 



In the Biologia Cent.-Amer. vol. vi, pt. 1, p. 600, INIr. Jacoby de- 

 scribes a genus Oroetes, in which the species has the middle tibise of 

 the male notched as in PhyUedhrus. While it is doubtless distinct, 

 the genus seems related to PhyUedhrus. 



GALERUCA Geoff. 



Head moderately large, not deeply inserted, front grooved between 

 the antennae, the tubercles not large. Eyes oval, feebly prominent; 

 labrum short, transverse; maxillary palpi stout, the terminal joint 

 elongate conical, as long as the preceding, but narrower. Antennae 

 rather stout, not longer than half the body, joint three nearly twice 

 as long as the second, 3-10 gradually decreasing in length, eleventh 

 longer. Thorax transverse ; scutellum nearly semicircular. Elytra 

 oval ; epij)leur£e entire ; anterior coxre contiguous, the cavities closed 

 behind; middle coxte very narrowly separated. Legs rather I'obust; 

 tibiie carinate on the outer edge, slightly broader at apex, the middle 

 pair with one terminal spur; tarsi stout, the first joint of the poste- 

 rior pair nearly as long as the next two ; claws cleft slightly behind 

 the middle. 



The name Galeruca is adopted for this genus in accordance with 

 the views of Mr. Crotch. It corresponds with Adimonia, as recog- 

 nized by Chapuis and others. In our species the middle tibise in 

 both sexes have a well-marked spur, although Chapuis states that 

 the tibise are unarmed. 



In his remarks on this genus Crotch admitted all the species of 

 LeConte's first group (Proc. Acad. 1865, p. 214), but a closer ex- 

 amination shows that all have the anterior coxal cavities open, ex- 

 cept externa, which will alone represent the genus in our fauna. 



G. externa Say, Journ, Acad, iii, p. 458; edit. Lee, ii, p. 222; rudis Lee, 

 Pacif. E. R. Rep. p. 69. — Form rather broadly oval, moderately robust, piceous- 

 black, feebly sbiiiincr^ the side mar};in and apex of elytra yellowish testaceous. 

 Head cribrate-punctate. Thorax more than twice as wide as long, slightly nar- 

 rowed in front, sides arcuate, parallel behind the middle, hind angles distinct, 

 but obtuse; base oblique each side, disc convex, a vague median depression, sur- 

 face very coarsely and closely punctate. Elytra on each side quadricostate, 

 often the third entirely absent and the first abbreviated, intervals coarsely and 

 closely punctate, the surface between the punctures alutaceous. Body beneath 



