300 Mr. G. Lewi's on 



''This species only differs from P, seminulum by the 

 cylindrical form, in which it deceptively resembles Teretrius 

 americanus, by having the elytra more finely punctured, and 

 by the entire absence of the sutural stria." 

 " Hah. Sault S. Marie, Michigan. One specimen. 



Isolomalus debilis, Leconte. 

 Paromalus debilis, Lee. Bull. U.S. Geol. Survey, v. p. 615 (1879). 



" Oval, subconvex, black and shining, finely punctured. 

 Head finely pnnctulate. Elytra without sutural stria ; there 

 are two short oblique faintly impressed stride at the base, and 

 two others more feebly impressed, visible near the margin 

 behind the middle. Prosternum without striae; mesosternum 

 margined only at the sides. 



" Of the same size and form as P. difficilis, Horn, but 

 much more finely punctured and with no sutural stria." 



Hah. Veta Pass, Rocky Mountains, U.S.A. 



This species and the last having no prosternal striae should 

 be placed in Isolomalus provisionally, notwithstanding the 

 absence of the sutural stria. 



Exosternus angolce, sp. n. 



Brexiter oralis, couvexus, niger, nitidus ; fronts utrinque marginata, 

 punctata ; pronoto stria marginali integra ; elytris striis 1-3 

 iutegris, 4 et suturali subintegris baud conjunctis; propygidio 

 pygidioque punctatis ; prosterno bistriato, striis antice divergenti- 

 bus ; mesosterno marginato ; tibiis anticis 8-9-dentatis. 



L. 3| mm. 



Somewhat shortly oval, convex, black and shining ; the 

 head, clypeus narrow and transverse, surface punctured but 

 not very evenly, marginata at the sides, not anteriorly ; the 

 tliorax, marginal striae complete but fine behind the head, 

 surface punctured not densely and the points vary in size ; 

 tlie elytra, outer humeral stria abbreviated apically about 

 one-tiiird, anteriorly clearly reaching the base, inner humeral 

 is shortened about one-third at the base, dorsal striae 1-3 

 strong and complete, 4 and sutural nearly join at the base, 

 but the fourth is slightly broken, 5 dimidiate and apical ; 

 the pygidia are evenly but not very densely punctured; the 

 prosternum is bistriate and the stria3 widen out at the middle 

 and continue widened to the anterior suture, keel densely 

 and finely punctulate ; the mesosternum is marginate ; the 

 anterior tibiae are 8-9-Jentate, 



It will be noticed that the fifth dorsal stria in this species 



