1878.] 377 jLeConte. 
basal impressions linear, not very deep. Elytra with the striz feebly ana 
finely punctulate. Length 7.4-8.5 mm.; .29-.35 inch. } 
Capron and Enterprise; abundant. Varies in color accord- 
ing to maturity, so that the tibiz and sides of the thigns 
also become yellow-brown. In some specimens the sides of 
the prothorax are less distinctly explanate, and such, except 
by their larger size, are difficult to distinguish from L. agilis. 
8. Loxandrus rectangulus, n. sp.—Black, very shining; slightly 
iridescent ; antennz and legs piceous, or blackish. Prothorax wider than 
long, slightly narrower at tip than at base, sides rounded, not sinuate 
behind, hind angles rectangular, not at all rounded; side margin more 
broadly reflexed towards the base, sides not explanate ; base with a few 
scattered punctures, impressions linear, deep. Elytra distinctly wider than 
the prothorax, striz not punctured. Length 6.5 mm.; .25 inch. 
Enterprise, May; rare. This species and crenatus, by hav- 
the elytra wider than the prothorax resemble in form certain 
Platyni and Bembidia. There are but two specimens before 
me; in the 2 the elytral strive are much deeper than in the &. 
9. Selenophorus excisus, n. sp.—Oblong, neous, sub-depressed; 
legs and antenne piceous, first joint of antenne ferruginous. Prothorax 
nearly twice as wide as long, rounded on the sides, which are finely mar- 
gined, a little narrower at base than at tip ; hind angles rounded, basal im- 
pressions shallow, not punctured. Elytra deeply sinuate at tip; humeri 
rounded, striz fine, interspaces flat ; punctures of the three series rather 
large and conspicuous. Hind tarsi long and slender, Length 5.5 mm.; 
.22 inch, 
Southern Florida, Dr. Palmer, 3 specimens. Of the same 
size, form and characters as S. fatwus, from which it differs 
by the punctures of the three elytral series being much 
larger, and by the hind angles of the prothorax more obtuse 
and more rounded. The outer interspaces of the elytra are 
not all punctulate. 
10. Hydroporus seminulum, n. sp.—Broadly ovate, obliquely 
attenuate behind, rounded in front, not very convex ; rufo-testaceous, 
shining. Prothorax scarcely perceptibly punctulate, with a fine short 
basal stria each side, which does not extend upon the elytra; the latter 
very finely, though distinctly punctulate. Beneath sparsely but strongly 
punctured. Length 1.3 mm.; .05 inch. 
Enterprise, one specimen. Of the same size as 1. granum, 
but very different by the body being strongly narrowed 
PROC. AMER. PHILOS. SOc. XVII. 101. 2U. PRINTED APRIL 19, 1878. 
