H. ('. FALL 
285 
found in the <rreat inajorit}- of specimens to l)e as stated above. 
In all species with margins normally l)ronzed, individuals occur 
in which there is no trace of metallic luster. 
(r. frateUus Notman, of which I owe a paratype to th(^ kind- 
ness of the describe!', is umpiestionably identical with (Jichrons. 
!). Gyrinus latilimbus new species 
Size small; black, highly polished, without trace of alutaceous sculpture 
ill the male, very finely alutaceous in the female; sides broadly bronzed in 
lioth sexes. Strial iiunctures of the elytra distinctly coarser laterally, eleventh 
stria rjuite near the margin. Anterior impressed line of punctures of the pro- 
notnm curving more strongly away from the front margin than in any other 
related species. Body beneath uniformly rufo-testaceous. 
Male genitalia . — Entirely testaceous, median lobe a little narrower apically 
than the lateral lobes, the tip distinctly angulate. 
Length, 4.2 to 4.7 mm.; width, 2.2 to 2.6 mm. 
Type locality. — Tyngsboro, Alassachusctts. Type (c/') in the 
author’s collection. 
The localities represented before me are — Maine (Paiis — 
Frost): New Hampshire (Farmington; Lake of the (douds, 
Mt. Washington- Blanchard): (Massachusetts (Tyngsl)oro; Mon- 
terey— Frost) : C'onnecticut (Litchfield— Woodruff) : New York 
(Ithaca— Cornell Univ. Coll.): Ontario (Searchmont) : British 
Cohiml)ia (J. H. Keen). 
This is the species that LeConte assumed to be the Innhatus 
of Say, although he admits not having seen any examples from 
( icorgia or Florida, the localities from which 8ay s ty})es came. 
The present species is strictly a northern one, and is extremely 
unlikely to be the true lifubaluft, though what the latter can be 
is still a mystery. According to Say, Uinhatiis closely resembles 
analis but is rufous beneath and the size a little largei'. 1 he 
})i’('sent species is smaller than anahs. 8uj)erhci;dly, lalili mha.^ 
resembles more or less strongly a numl)er of otluu's, notal)l\ 
icoodruffi and aeneolus, in both of which th(' eleventh elyti'a! 
stria is distinctly more distant from the margin, while the ti'jins- 
verse series of pronotal punctures is in the present s])('ci('^ moie 
distant from the front margin than in the related spc'cie.s. 1 he 
bronzed margin of the elytra is wider than usual in latilnnhu.'^, 
involving the four, or often five, lateral intei'spaces. 
TK.CNS. AM. EXT. SUC., XLVII. 
