584 Goleopterological Notices, VII. 



dorsal much longer than the next two combined, the fourth but 

 little longer than the first ; behind the fourth there is a short 

 dorsal part of the large exsertible sixth ventral, which dorsal part 

 may be completely hidden at times under the fourth dorsal ; be- 

 hind this again there is a short transverse pygidium. In the male 

 the dorsal pygidium is large, transversely oval, with two deep 

 perforate cavities on the median line, the lower the larger, and is 

 strongly exsertible, the sixth ventral very mobile but fixed at base, 

 fitting in a large circular emargination of the fifth, with its apex 

 broadl^^ sinuate, the sinus cusped at the middle. The spiracle of 

 the large fourth dorsal is at the middle of the lateral edge and is 

 at the summit of a small oblique tubercle. The female of ambly- 

 . oponica in my cabinet, which I owe to the kindness of Mr. Schmitt, 

 is 2.85 X 0.88 mm. in size, so the measures of Dr. Brendel are prob- 

 ably somewhat too great, though the female is rather smaller than 

 the male, as in man}' Batrisi. 



Bryaxini. 



DECARTHRO^T Bndl. 



The following species is sufflcientlj^ common, even in Massa- 

 chusetts, but seems to have been unaccountablj^ overlooked: — 



D. laureiiticiim n. sp. — Black and polished throughout, the elytra 

 generally not paler, ventricose ; pubescence long, abundant, erect, bristling 

 and rather dark in color. Head nearly as wide as the prothorax, the eyes large 

 and prominent, the tempora short ; fovese distinct, separated by scarcely more 

 than }^ the entire width ; antennal prominences large. Antennse black, stout, 

 bristling with long erect setae, scarcely longer than the head and prothorax ; 

 joints three to six subglobular and equal ; seventh and eighth a little wider 

 than the preceding, transverse and equal ; ninth nearly twice as wide as long. 

 Prothorax rather small, slightly wider than long, less than 3^ as wide as the 

 elytra, widest a little behind the middle ; apex more than }4 the maximum 

 width ; median fovea small but deep and punctiform, the lateral wholly obso- 

 lete. Elytra short, fully ^^ wider than long, the sides strongly divergent 

 from the base, broadly arcuate throughout; discal stria extending to apical 

 third. Abdomen as wide as the elytra and distinctly shorter, the first segment 

 broadly arcuate at tip, a little more than twice as wide as long ; carinse arcu- 

 ate, feebly divergent, extending beyond the middle of the segment. Legs 

 moderate, dark brownish-rufous in color throughout. Length 1.25 mm. ; 

 width 0.7 mm. 



Canada (Ottawa — Mr. W. H. Harrington) ; Massachusetts 

 (Lowell — Mr. Blanchard). 



