1873.] -Jl iVLorn. 



subhumeral entirely absent. Epipleurje bistriate. Pygidium and pro- 

 pygidium moderately densely and coarsely punctured. Anterior tibise 

 tridentate, apical tooth feebly emarginate. Length .18 inch ; 4,5 mm. 



Occurs at Fort Yuma, California. 



Differs from s:ll the species of the group by the color of the elytra, 

 which are in great part red with the apical margin and trapezoidal 

 scutellar spot black. The form is also sub-hexagonal. 



H. curtatus, Lee. Bost. Journ. V,, p. 54, pi, 3, fig, 2 ; Mars, Mon.. 

 1854, p. 272, pi, 8, fig, 73, 



Form oblong oval, Iiuier thoracic stria entire, outer very short, 

 forming merely a short arc at the anterior angle. Elytra with four entire 

 dorsal striie, fifth short apical, sometimes extending to the middle, 

 sutural longer than the fifth, subhumeral appendix short. Epii)leura3 

 bistriate, Propygidium shining, very sparsely punctate, pygidium 

 neai'ly smooth with very few iJunctures at the sides only. Anterior 

 tibiae feebly tridentate, ajjical tooth slightly bifid. Length ,18 inch ; 

 4,5 mm. 



Differs from the sjiecies with 4-striate elytra by its more oblong form, 

 and by the presence of the very short humeral appendix. There is no 

 apical subhumeral stria. 



Pennsylvania and Illinois, 



H. Haldemanni, Mars. Mon., 1860, p. 547, pi. 7, fig, 37, 



From the description and comparisons made by Marseul, I cannot 

 separate this species from curtatus. A verification of this must be made 

 before placing this in synonymy. 



H. defeetus, Lee. Proc. Acad., 1859, p. 312 \ permixtus, Zimm. Trans. 

 Am. Ent. Soc, 1869, p. 252. 



Broadly oval. Inner thoracic stria entire, outer short apical. Elytra 

 with four entire stride, fifth short, apical, sutural half the length of the 

 elytra, subhumeral entirely absent. Epiijleurse bistriate. Propygidium 

 sparsely punctured, pygidium nearly smooth, and with a few punctures 

 near the base and sides. Anterior tibiae tridentate apical tooth deeply 

 bifid. Length .12 inch ; 3 mm. 



Very closely allied to the following species, and differs from serous by 

 the short external thoracic stria. 



Geoi-gia and South Carolina. 



H. indistinctus, Say. Journ, Acad., 1825, p. 35 ; Lee, Bost, Journ. 

 v., p. 56, pi. 3, fig. 6; Mars. Mon., 1854, p. 574, pi, 10, fig. 137. 



Thoracic striaj entire. Pygidium more distinctly punctured. Length 

 ,12-14 incih ; 3-3,5 mm. 



The above points are all those from which it differs from defeetus. 



North Carolina and Georgia, 



H. servus, Er. Jahrb., 1834, p. 147 ; Mars. Mon., 1854, p. 501, pi. 9, 

 fig. 126 ; Zimm. Trans. Am, Ent, Soc, 1869, p. 252. 



Thorax with two entire striae. Pygidium convex, coarsely and moder- 



