FREDERICK BLANCHARD 
21 
broadly emarginate, the emargination apparently with a fine membranous 
border, the clypeus filling the emargination, hence nearly as long as wide, the 
anterior outline strongly, narrowly arc‘uate at middle, somewhat oblique each 
side, broadly arcuate behind, and bearing a small, distinct, smooth, subacute 
tubercle at middle, b'ront bicarinate, the carinae distant on the vertex nearly 
the width of the eyes, at first parallel, then slightly divergent an equal dis- 
tance and uniting with the well-marked transver.se margin of the front above 
the antennae, which reaches the emargination of the eye. Eyes moderate in 
size, broadly and deeply triangularly emarginate two-thirds the width of the 
eyes, the inner lobe much narrower than the outer; orbits impressed on the 
inner side. Antennae with first joint short, stout, the second shorter and not 
quite so thick, third to eighth as usual; club small, scarcely longer than the 
preceding six joints, finely irregularly pubescent; ninth joint as broad at apex 
as long, tenth transverse, one-half wider than long, eleventh triangular, axial 
side longest. Prothorax transverse, narrowed in front, sides arcuate and 
distinctly margined very nearly to the anterior angles; a well-defined carina 
from the hind angles to middle, parallel with and near to the margin; base of 
usual form, feebly bi-impressed at middle, surface shining, sparsely, rather 
coarsely punctate on the disk, more closely at the sides, a sparse, very fine 
punctuation interspersed. Elytral striae except sutural and marginal very 
difficult to trace, being represented by fine, rather distant punctures not dif- 
fering from the sparse punctures of the intervals, but becoming stronger at 
apex; humeri briefly, obtusely tricarinate due to the impressions of the seventh 
and eighth striae. Beneath, prothoracic flanks coarsely, not densely punctate; 
prosternum at middle with margins defined to apex, becoming much wider 
behind; sulci entire, parallel, the interval from front to rear, gradually more 
strongly, narrowly convex or subcarinate; a few distant punctures anteriorly, 
more finely and very sparsely punctate behind, the deeply concave sides punc- 
tate. Metastemum and abdomen moderately, coarsely, not closely punctate; 
tarsal grooves somewhat arcuate. Length 3 mm. 
A single female specimen collected at Brownsville, Texas, by 
Mr. Chas. Schaeffer and belonging to the Museum of the Brook- 
lyn Institute. 
Distinct from other species of the convergens group in our fauna 
by the effaced elytral striae, the form of the clypeus and labrum, 
the still more deeply emarginate eyes, and other characters. 
Dr. Horn describes Aulonothroscus fraternus (2 mm.) from [Mexico, 
in the Biologia, as having the elytral striae indicated by fine 
punctures, prosternal striae entire and eyes entire. In our fauna 
those species having entire eyes have the prosternal striae abbre- 
viated, while the species with entire prosternal striae have the 
eyes distinctly more or less emarginate. The male of the present 
species will undoubtedly have the antennae larger; its disco v’ery 
will be awaited with much interest. 
TRANS. AM. ENT, SOC., XEIII. 
