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XII. Descriptions of Neiv Genera and Species of Hetero- 

 niera. By Frederick Bates. 



[Eead 1st June and 6th July, 1868.] 



Family TENEBRIONID^. 

 Sub.-fam. CCELOMETOPIN^. 



HypaulaXj n. g. 



Mentum not borne on a projection of the submentum, 

 its base and the bases of the maxillae on a nearly even 

 plane ; of variable form, usually with an angular notch in 

 the middle of the fore-margin, front angles rounded, nar- 

 rowed behind, and impressed down the median line ; * 

 maxillcB having the inner lobe armed with a strong claw, 

 unequally bifid, whereof the upper prong is much shorter 

 than the lower ; f labium somewhat prominent, rounded 

 or broadly emarginate in front, and ciliate in the latter 

 case : last joint of the labial palpi sub -triangular, that of 

 the maxillary moderately securiform ; mandihles bifid at 

 the end; lahrum transverse, rather prominent, sinuous 

 in front, with the angles rounded. Head more or less 

 prominent, but little contracted behind, more or less 

 convex and smooth between the eyes ; antennary orbits 

 moderately prominent, rounded, with an impressed line 

 within, in front of the eye t front and epistome together 

 trapeziform, the latter very short, broadly emarginate 

 in front, fore angles rounded, separated from the former 

 by a lightly impressed lunate or subangulate line ; cheeks 

 prominent, with a deep channel or groove beneath, 



* There also occurs here (as in some species of Nyctohates, and in a 

 crowd of other genera), that peculiar form of mentum comj)Osed of a cen- 

 tral portion large and convex, and two smaller flat pieces situate on each 

 side at the back, which might appropriately be termed "the wings " of the 

 mentum. I propose to caU this form of mentum "winged," as, in its most 

 exaggerated form, it can scarcely be considered trilobed. 



t The same form exists in the genera Ccelometojyus, fyhthimus, Cwloc- 

 nemis, &c. Lacordaire says of this last genus "machoires inermes" : — 

 in the two species that I have dissected, there is distinctly visible a short 

 obtuse claw, which is unequally bifid. 



TRANS. ENT. SOC. 1868. PART III. (SEPTEMBER). T 



