ANNALS OF THE LYCEUM. 389 



of a new genus Metonius Say, which is identical with Pachyscclis ; 

 T. ovata Weber is a very diflFerent insect, belonging to Brachys. — 

 Lec] 



2. T. GRACILIS. — Oblong blackish ; elytra with regular series 

 of punctures. 



Desc. Body rather slender, oblong, blackish-brassy : head a 

 little concave, but not profoundly so: thorax inequal, with a 

 slight impressed line before, and a wide indented space occupy- 

 ing half the thorax behind ; on each side is a^raised, arcuated, 

 obtuse line, extending nearly from one angle to the other : scutel 

 moderate : elytra with regular series of rather large, profoundly 

 impressed punctures, which are obsolete at tip. 



Length less than three-twentieths of an inch. 



A comparatively slender species. I found it on a myrtle bush 

 at Senipuxten island, in September. It exhibits an unusual 

 regularity in its series of punctures. 



[This is the type of Taphrocenis Sol.; but the name under 

 which it was known to him is the synonym Brachys alboguttata 

 Lap. and Grory. — Lec] 



ELATER. 



1. E. ABRUPTUS. — Black, covered with minute hairs : junc- 

 tion of the thorax and elytra deeply excavated. 



Desc. Body black, polished, covered with minute punctures, 

 which give rise to very short brown hairs which [254 ] in a par- 

 ticular light have a somewhat sericeous appearance : serratures of 

 the antennae and palpi dull rufous : thorax considerably convex, 

 at the base abruptly curved downwards ; the lateral spines are, 

 however, horizontal : scutel convex, oval, making a considerable 

 angle with the longitudinal diameter of the body; elytra with ob- 

 solete impunctured striae, more distinct towards the margin and 

 tip : base rather abruptly, very much decurved, so that, in con- 

 junction with the form of the thoracic base, it exhibits a wide 

 and deep excavation between the two parts of the body. 



Length four-fifths of an inch. 



Next in size to the morio and Isevigatus Fabr., of all the North 

 American species I have yet seen. The latter species I believe 

 to be only a variety of the former ; it is equal in size, with the 

 same form, impressed front, &c. ; the only difference is, that one 



