1873.] 181 



NOTES ON HETEROMERA, AND DESCEIPTIONS OF NEW GENEEA 

 AND SPECIES (No. 4). 



BY r. BATES. 



Alegoria Sallei, sp. n. 



Glossy black ; palpi pitchy-red, the labials sometimes brighter red : mentum 

 with the front angles strongly rounded, punctured (but not closely), an oblong 

 depression at each side near the margin ; last joint of maxillary palpi moderately 

 securiform ; antennae of the same form as in A. dilatata, black, the outer joints 

 dusky (sometimes slightly rufescent) ; labrum sparingly and minutely punctured, 

 the anterior angles strongly rounded, the apex broadly notched in the middle ; head 

 with a broad transverse depression on the front, the epistomal suture well marked at 

 each side by a very fine deep line ; a few well marked punctures on the front and 

 neck, rest of head sparingly and minutely punctured ; the antennary orbits are 

 prominent in front of the eyes, giving to the head, at the sides, the square angular 

 appearance seen in A. dilatata ; prothorax one-fifth wider than long, sides gra- 

 dually (and slightly sinuously) roimded to five-sixths their length, thence somewhat 

 abruptly contracted and sub-parallel to the hiiid angles, which are slightly out- 

 wardly directed ; apex sinuous, the fore angles prominent ; base sinuous ; base 

 and sides somewhat strongly margined and grooved, apex margined only to one- 

 third the width at each side ; laterally, at each side the disc, are two or three shallow 

 rounded foveae, and there is also an impression at each side the middle of the base ; 

 minutely punctured at the sides and angles, the punctuation at the front angles the 

 strongest ; scutellum with a transverse depression on the disc, impunctate ; elytra 

 elongate, sub-parallel ; base shghtly sinuous, humeral angles prominent, rounded ; 

 punctate-striate, intervals fl[at on the disc, convex at the sides and apex, impunctate ; 

 under-side deep black, less shining than the upper ; flanks of the prothorax faintly 

 rugose, impunctate ; prosternal process longitudinally convex, scarcely margined, 

 faintly punctate, the extremity obtuse ; legs shining black, feebly punctate ; anterior 

 femora rather strongly arched, scarcely more robust (but less compressed) than the 

 four posterior ; anterior tibiffi elongate, sinuous, apically inwardly curved and pro- 

 duced, keeled on the upper-face, the apical half outwardly ciirvedly expanded and 

 hollowed out superiorly for the reception of the tarsi in repose, the under-side of this 

 expansion is thickly beset with short conical teeth j middle and hind tibisB shorter, sub- 

 equal, thickened at the extremity (which is also closely denticulate at the outer edge 

 and on the under-side), the apex inwardly produced: tarsi short, massive; first 

 joint of the posterior not longer than the last ; mesostemum somewhat abruptly 

 declivous in front ; intercoxal process broadly triangidar at apex. 



Long. Corp. 7i lin. 

 Hah. : Mexico ; three examples. 



In this and the following two Bpecies of Alegoria there is a con- 

 siderable departure from the generic type ; indeed, some of the 

 characters (those of the form of the anterior tibiae more especially in 

 the present species, and of the last joint of the maxillary palpi, form 

 of prothorax, antennae, meeosternum, and intercoxal process, in the 



