56 WILLIAM J. FOX. 



orbits, spot between the anteniife. two basal antennal joints beneath, posterior 

 margin of prothorax, a spot on each slioulder, a short line in centre of dorsnhim 

 posteriorly, small spot on scutellum, and a transverse one on postscutelliini, pos- 

 terior angles of metathorax, spot on niesoplenrie above the middle coxiB. anterior 

 coxse in front, spot on apical portion of medial coxfe in front and a line on the 

 posterior coxse on the outer side, and a spot at its apex, all pale yellow ; antennse 

 much shorter than the head and thoi-ax together: front with a distinct median 

 impressed line, microscopically punctured, and with large, sparse punctures 

 mingled with the finer punctures; in front of the anterior ocellus and on each 

 side of the posterior pair there is a strong depression or pit. the anterior one 

 most di.stinct; the space within the ocelli with strong, separated punctures; 

 thorax with strong, sparse punctures, more abundant on the dorsulum, the punc- 

 tures more compact in two longitudinal depressions on the latter; metathorax 

 with a polished, somewhat triangular excavation at the base medially, from 

 which originates a short, deep sulcus; the rest of the metathorax. except the 

 sides, which are glabrous, rugoso-punctate, together with the mesopleurte and 

 coxae, with sparse silvery pubescence; tegulse testaceous: wings hyaline, the 

 apical margin fuscous; legs reddish fulvous, the anterior and medial more or 

 less variegated with yellow; the extreme base of the posterior tarsal joints 

 black ; abdomen shining, the first segment with a yellow spot on each side, the 

 four following segments with their apical margins yellow, interrupted medially, 

 broadly emarginate on ea<;h side, and enlarged at their lateral ends into an ovate 

 spot: "sixth segment with a large, yellow spot, nearly occupying the whole 

 segment in one specimen ; venter immaculate (this segment is lacking in the 

 specimen before me)." Length 7 mm. 



% . — DiflFei's from the 9 ^^ follows: antennRe as long, or a little longer than 

 the head and thorax together; front below the antennae entirely, first two an- 

 tennal joints and part of the third beneath, the greater part of the medial and 

 posterior coxse yellow? (in the specimen before me these parts are rufous, prob- 

 ably due to an overdose of cyanide); posterior tarsi nol, or very indistinctly 

 ringed with black at the base of the joints; the excavation at base of metatho- 

 rax larger, and the medial sulcus a little longer than in the 9 . Length 8 mm. 



Florida, Illinois (Cresson); Canada (Prov.). A % from Georgia. 

 The posterior legs of this species are no longer than in most of the 

 species before me which equal it in size. 



12. Ceropales agilis Sm. 



Ceropales agilis Sra., .Tourn. of Entom. ii, p. 269, J . 

 9 . —Black, the abdomen ferruginous, fuscous at the base ; sides of the clypeus, 

 margin of the labrum narrowly, anterior orbits broad above the antenuje, sides 

 of face, spot between the antennse, first two antennal joints beneath, posterior 

 orbits narrowly, posterior margin of prothorax, spot on the shoulders, small spot 

 on the scutellum and a transverse one on the postscutellum, posterior angles of 

 the metathoi-ax, whitish yellow; front, metathorax, mesopleurse and coxse. with 

 silvery pubescence ; wings fusco-hyaline, nervures black; tegulae brownish; 

 antennae slightly longer than the head and thorax together; front depressed, 

 with sparse, rather strong punctures, with a distinct medial impressed line; 

 before the front ocellus there is a transverse pit or excavation ; thorax strongly 



