62 Journal New York Entomological Society. [Voi. xv. 



erect, pale hairs. Elytra a little longer than one and a half times the basal width, 

 slightly widening to apex ; surface rugose with feebly impressed strise and extremely 

 short semi-erect, pale hairs. Pygidium densely confluently punctate. Labrum arcu- 

 ately emarginate. Metasternum moderately coarsely punctate. Ventral segments 

 with slightly smaller, submuricate and more sparsely placed punctures. Anterior 

 tibifB tridentate. Claws cleft, but the lower part broader and much smaller than the 

 upper and obliquely truncate at apex. Length II mm. 



Hampton, New Hampshire (S. A. Shaw). 



This species looks very distinct, but differs very little from sordida, 

 except in the absence of dense, yellowish pubescence of the thorax and 

 also the much shorter and scarcely visible pubescence on the elytra. 

 I have examined a number of specimens of sordida, but the thoracic 

 pubescence, even in old worn examples, seems to be persistent, while 

 there is no trace of longer yellowish hairs in riigosioides, in which the 

 short greyish hairs can only be seen from a lateral point of view. The 

 form is also more depressed and not as convex as in sordida. 



Diplotaxis muricata, new species. 



Oblong, dull black, elytra with rows of pale recumbent hairs. Head coarsely 

 cribrately punctate, clypeal suture almost obliterated ; clypeus short, apical angles 

 rounded, scarcely reflexed and very feebly emarginate in front, genas nearly continu- 

 ous with the clypeus. Thorax twice as wide at base as long ; sides arcuately 

 rounded, t)ie widest part at middle ; apical angles sub-acute, basal angles distinct but 

 obtuse ; surface densely and very coarsely punctate, punctures less dense and more 

 separated on the disk ; from each puncture arise pale, short hairs. Elytra not quite 

 one fourth longer than wide ; humeral angles distinct ; sides nearly parallel, very 

 feebly widening behind ; costa; almost indistinguishable ; punctuation coarse and 

 somewhat muricate ; viewed laterally, there are a number of nearly regular rows of 

 short, recumbent, pale hairs. Underside very coarsely punctate, punctuation sparser 

 on the abdominal segments ; pygidium and propygidium coarsely, cribrately punc- 

 tate, but the latter only so in a transversely impressed apical space ; labrum broadly, 

 but not deeply arcuate-emarginate ; maxillary palpi oblong-oval ; presternum cari- 

 nate ; front tibice tridentate, the upper tooth further removed from the second than 

 the latter is from the first ; tarsal joints rather short and stout : claws cleft, the lower 

 part broader and much shorter than the upper and obliquely truncate. Length 5 mm. 



Alpine, Texas (H. F. Wickham). 



I received two specimens of this distinct species from Mr. Warren 

 Knaus- under the name of puberulus, one of which he kindly pre- 

 sented to me. From piiheruiiis it differs in form of thorax and elytra, 

 punctuation and pubescence ; from brevisetosa the form and punctua- 

 tion of elytra and claws will separate it. 



