AMERICAN COLEOPTERA. 315 



One specimen from the Southern coast of Newfoundland, given 

 to Dr Leconte by Mr. L. Reiche of Paris, belonging to Mr. Reitter's 

 subgenus Acanthogethes and apparently most closely allied to M. brevis 

 St., of Europe. 



CYCHRAMINI. 

 Maxillae with one lobe. Labrum distinct. Thorax margined at 

 base covering the base of the elytra. Elytra covering the abdomen 

 in <^reat part, the pygidium is part only exposed. Prosternum more 

 or less prolonged at apex. Tarsi distinctly five-jointed. 



The -enera here placed contain species of broadly oval convex 



form, ei'ther pubescent or glabrous. The tribe as constituted here 



is the same as that of Erichson and Lacordaire, excepting that 



Oyhocephalus has been removed in accordance with the views of 



Duval, (Gen. Col. Eur.), and Psilopijga added. 



The senera are distinguished in the following manner: 

 Mesosternum protuberant in front, the middle cox* widely separated, 

 ''^roter^^u/prolonged, dilated laminifor,n at tip covering entirely the ne 



sternum. Body glabrous, elytra striato-punctate ..Psilopyga. 



Prosternum less prolonged, feebly dilated at tip, not covermg ent.rely the 

 .esosternum. Body pubescent, elytra irregularly P"--- ^^^^^^^^^, 



Mesosternum small, oblique, not protuberant. 

 Metasternum protuberant, widely separating the middle cox.. Prosternum 

 not prolonged at tip, not laminiform, vertical beh.nd the ^^^^r.o^r^c^oxj. 



Body glabrous • """ 



Metasternum not protuberant, n.iddle cox* narrowly separatea. 



Hind tarsi longer than the others. Body glabrous .Pallortes. 



Tarsi equal in length. Body pubescent Cycliramus. 



PSII^OPYGA Lee. 

 Labrum prominent, deeply bilobed. Front prolonged at middle 

 truncate. Antennae with an oval, abrupt, three-jointed club, grooves 

 deep subocular, parallel. Mentum transverse, sides short, apex arcu- 

 ate Last joint of maxillary palpi cylindrical, rounded at tip, the 

 labial oval Prosternum prolonged behind the coxae, the tip broader 

 and explanate covering the mesosternum which is carinate. Thorax 

 marc^ined at base, covering the base of the elytra, the middle with a 

 short but broad, squarely truncate lobe. Scutellum large, broadly 

 triano-ular. Elytra truncate. Tibiae with outer apical angle denti- 

 forml anterior tarsi dilated, the middle feebly, the posterior simple. 

 Tarsal claws simple. 



The males have a small additional segment. 



I have removed this genus from the preceding tribe and place it 



