Horn.] OVO [June 20, 



smooth, very sj^arsely and minutely piinctulate. Anterior tibife bidentate 

 and above the upper tooth minutely denticulate. Length .08-. 10 inch ; 

 2-2.5 mm. 



The peculiar striation of the elytra at once distinguishes this species 

 from all others in our fauna. 



Occurs in Middle States and Illinois. 



P. mimeticus, n. sp. 



Oblong oval, sub-depressed, surface brilliant metallic blue, legs and an- 

 tennae piceous, under surface black. Head feebly convex, sparsely punc- 

 tured. Thorax equally punctured with moderate punctures with coarser 

 punctures intermixed at the sides. Elytra sparsely punctulate, more 

 evidently punctured at apex, subhumeral stria entire, dorsals 1-4 entire, 

 tiuely punctured, fifth abbreviated at base, sutural replaced by punctures 

 which extend slightly in front of middle. Propygidium and pygidium 

 sparsely and finely punctured. Prosternal strife well impressed, meso- 

 sternal stria entire. Anterior tibise bidentate and multidenticulate above 

 the upper tooth. Length .06 inch ; 1.5 mm. Plate V., tig. 5. 



Closely allied to ceneicoUis and dominicanus, and difters from the first 

 by the abbreviated fifth dorsal, and from the latter by the entire stria of 

 mesosternum. 



One specimen in cabinet of Mr. Ulke, collected in Arizona. 



P. quatuordeeimstriatus, Steph. Illust. Brit. Ent. V., 1833, p. 412 ; 

 nana, Lee. Bost. Journ. V., p. 71, jjl. 4, fig. 4. 



Oblong oval, convex, piceous black, shining, antennse and legs reddish- 

 brown. Thorax sparsely punctulate, punctui'es at the sides coarser. 

 Elytra with the subhumeral stria entire, striaj 1-5 entire, punctured, the 

 fifth slightly arching at tip, and joining the entire sutui-al. Propygidium 

 and pygidium sparsely punctured, the latter much more finely and 

 sparsely. Anterior tibiae bidentate. Length .08-.10 inch; 2-2.5 mm. 



This species occurs in many parts of the world, and it is found in our 

 own country from the Middle States to Georgia. 



P. lautus, Zimm. Trans. Am. Ent. Soc, 1869, p. 253. 



More elongate and convex than the preceding species. Thorax sparsely 

 punctured, punctures moderately coarse and evenly distributed over the 

 entire surface. Subhumeral stria entire, dorsals 1-5 entire, sutural 

 abbreviated at base and not joining the fifth dorsal. Pygidium and pro- 

 pygidium sparsely and finely punctulate. Anterior tibiae bidentate. 

 Length .06 inch ; 1.5 mm. 



Occurs in Noi'th Carolina. 



P. opuntise, Lee. Am. Lye. V., p. 164. 



Oblong oval, moderately convex, piceous black, shining. Thorax very 

 minutely and sparsely punctulate, punctures more evident at the sides. 

 Elytra Avith the subhumeral stria straight and entire, dorsals 1-4 entire, 

 fifth abbreviated at base and continued by punctures and gradually con- 

 verging toward the sutural which is also similarly abbreviated. Propy- 



