420 G. R. CROTCH, M. A. 



ture clearer and brighter, dorsal punctures well marked; posterior coxae obso- 

 letely punctulate, tibiae as in A. suturalis. % anterior tarsi witb tbe claw 

 dentate. L. -35 inch. 



California, Wyoming, Utah, Indian Territory, Oregon. 



Differs from G. mturalis by its parallel sub-depressed form and by 

 the male tarsi. 



G. seriatus, Say, Tr. Am. Phil, ii., 97; striatus, Aube, Spec, p. 305 



Ovate, sub-convex, black, legs rufescent, above bronzed; thorax with the sides 

 rounded in front, posterior angles rectangular, not strongly margined ; elytra 

 with the lateral pale spot obsolete, shining, very finely and closely reticulate, 

 dorsal punctures evident; posterior coxae obsoletely punctulate, tibiae with an 

 accessory row of deep punctures. £ anterior claws obtusely dentate. L. .40 

 inch. 



Pennsylvania, Canada. (Leconte, Horn.) 



Posterior tibial spurs much shorter than the first tarsal joint, an- 

 terior tibiae unarmed. 



G. parallelus, Lee. Lake Sup, p. 213.— Very close to G. seriatus, but 

 more elongate, parallel, sub-depressed, legs black. % anterior tarsal claw 

 with an obtuse tooth. L. "42 inch. 



Lake Superior. (Leconte.; 



G. iiiftiscatus, Aube, Spec, vi., 330, 33.— Ovate, brassy-black, mouth, legs 

 (femora infuscate), sides of thorax, margins of elytra and ventral segments 

 yellowish-brown; thorax with the sides nearly straight, finely margined, an- 

 terior angles broad, almost rounded ; surface coarsely rugulose and reticulate; 

 elytra very finely reticulate, forming extremely small but perfectly equal 

 areolae, dorsal series confused; prosternum acutely carinate, posterior femora 

 sparsely punctate, tibiae alutaceous, tarsi with the last joint larger than fourth. 

 £ tarsal claws elongate, dentate at the base. L. *30 inch. 



Lake Superior. (Leconte.) 



The different sculpture of the thorax and elytra is characteristic of 

 this species. 



G. scapularis, Mannh. Bull. Mosc. (1852), 2. 303; anthracinus, Man nh. 

 1. c. p. 304. — Ovate, sub-convex, black, slightly bronzed above, antennae, legs 

 and humeral region of the elytra pitchy-red; thorax short, sides slightly 

 rounded, finely margined anterior, angles rufescent; elytra rather coarsely re- 

 ticulated, with unequal but easily visible areolae, dorsal series obsolete; pos- 

 terior femora strigose, apical angle produced, spurs short, tibiae smooth except 

 four basal punctures, last joint of larsi longer than fourth. £ anterior tarsal 

 claws elongate, sinuate, tarsi narrow. L. - 30 inch. 



Sitkha, Canada. (Leconte, Horn.) 



