296 [April, 



reaching to the suture, and an angulated spot at the apex (as in H. undulatus) 

 yellow. Body beneath rufo-testaceous, coarsely densely punctured. 



27. H. o p p o s i t us Say ; III. prozimus Aube. The length given by Aube is 

 rather less than that of any specimen seen by me ; the species is very similar to 

 the preceding, and seems distinguished principally by the margin of the thorax 

 being a little broader, with the anterior angles not porrected ; the general form 

 is more obtuse anteriorly, and the color is usually darker, so much so that the 

 fascia? of the elytra are at times hardly visible. The punctures of the eljtra of 

 the female are more distinct than in H. undulatus. 



29. H. spurius, ovalis, postice magis attenuatus, ferrugineus, pubescens, 

 capite suhtiliter punctulato haud marginato, thorace confertim punctulato, mar- 

 gine bisali nigricante, lateribus raarginatis cum elytris angulum haud forman- 

 tibus, his (maris) confertim subtiliua punctatis striis versus suturam2 vel 3 punc- 

 tatis parum impressis ; nigris, margine fasciis duabus undulatis, apiceque testaceis. 

 Long. -18. 



One male, from Vermont, was kindly given me by Dr. Harris. This species 

 closely resembles in form, sculpture and color, H. oppositus, but the 

 epistoma is not margined. From H. sericeus it is distinguished by its less 

 elliptical and less convex form, and by the large lateral spot behind the humerus 

 not being produced so as nearly to unite the two yellow bands which are also 

 in that species broken up into a series of linear spots hardly connected together. 

 The male is also less finely punctured than the male of H. sericeus. 



30. H. m i x t u s, longior ovalis, postice magis attenuatus, ferrugineus subtiliter 

 pcrce pubescens, capite subtiliter punctulato, vix obsoletissime late marginato, 

 thorace minus dense subtilius punctato, apice et basi vix nigricante, lateribus 

 fortius marginatis, elytris parcius minus s&btiliter punctatis stria suturali punc- 

 tata, nigris margine fasciis undulatis duabus interrupiis apiceque testaceis. 

 Long. -17. 



One male from Nebraska. Longer and more pointed posteriorly than H. un- 

 dulatus, with only a very faint transverse line representing the margin which in 

 that species is quite distinct. The anterior angles of the thorax are not por- 

 rected, and the punctures of the elytra are larger and more distant. 



32. H. s e m i r u f u s, rufo-testaceus parum convexus ovalis postice at'enuatus, 

 confertissime subtiliter punctulatus, breviter pubescens, capite punctulato, tho- 

 race latius marginato, cum elytris angulum vix formante, his lineolis quatuor 

 sutura margine basali macula postica alterisque duabus submarginalibus con- 

 fluentibus nigris. Long. -16. 



Fort Laramie, Nebraska. The first of the lateral spots is placed about the 

 middle, and is frequently not connected with the others ; the second spot is about 

 one-fourth from the apex, and internally is usually connected with the common 

 sutural black spot near the apex. The four discoidal lines are more or less con- 

 fluent, and are gradually shorter externally ; the outer ones are connected with 

 a short black basal margin. 



33. H. 1 i n eo 1 a tu s, longior ovalis, postice attenuatus, rufo-testaceus sub- 

 tiliter pubescens, capite subtilissime, thorace subtiliter parce punctulato, hoc 

 lateribus tenuiter marginatis, cum elytris angulum haud formantibus, margine 

 basali nigricante, elytris subtiliter punctulatis, sutura vittisque angustis utrinque 

 quatuor plus minusve confluentibus, maculisque externis duabus angustis nigris. 

 Long. -08. 



Illinois ; Mr. Willcox. The second and fourth black lines of the elytra reach 

 the base ; the first and third are abbreviated anteriorly ; the two outer spots are 

 narrow, as if formed by the interruption of a fifth line, of which a trace is some- 

 times seen on the humerus in the form of a dusky dot. Between the suture and 

 first line is sometimes seen a very slender black line. 



34. H. v i 1 1 a t u s, ovalis, subconvexus, postice suba'tenuatus, rufo-testaceus 

 parce pubescens, capite postice punctulato, thorace punctulato, apice et basi 



