142 [Auaust, 
Rypogivus Lec. 
Caput thorace non obtectum, clypeo prolongato; antenne longiuscule, inter 
oculos inserte, 9-articulate, articulo 1° magno conico, 22¢d0 oblongo sesqui 
breviore et angustiore, 3 et 4 parvis tenuissimis; 5to iterum elongato, crassiore 
conico, 6to minuto, ultimis tribus interne dilatatis latitudine non brevioribus, 
clavam oblongam formantibus ; tarsi 4-articulati, articulo 2ndo dilatato, lébato, 
3io recepto, unguiculari elongato, unguibus simplicibus. YN 
This genus agrees closely in characters with the next, but differs by its 
broad tarsi, which are similar to those of the genuine Coccinellide. The thorax 
is rounded in front, extending slightly over the head, but not concealing it. The 
posterior angles are rectangular, not produced; the elytra are subtruncate at 
the apex. The body is elliptical, a little narrowed behind, moderately convex and 
glabrous. The prosternum is very narrow and acute, the mesosternum extremely 
small and rounded infront; the tibie are a little dilated towards the extremity. 
1. R. marinus, nigro-piceus, nitidus, subtilissime alutaceus, thoracis 
angulis posticis, epipleuris, tibiis tarsisque rufescentibus. Long. :04. 
Two specimens found at Coney Island under a dead Limulus Polyphemus. 
Shining piceous black, very finely rugous, moderately convex. Antenne testa- 
ceous at base. Thorax twice as wide as long, almost semicircular, very slightly 
sinuous at the apex, finely margined on the sides, base straight, posterior angles 
subrectangular, somewhat rufous. Scutellum distinct. Elytra one-half longer 
than wide, a little narrowed behind, conjointly broadly rounded at the apex, 
very indistinctly punctulate; epipleure rufo-piceous; feet piceous, tibiz and 
tarsi paler. 
Microspu@ra Redt. 
Caput liberum. Antenne breviuscule, 9-articulate, inter oculos inserte, 
articulo 1™° magno, conico, 2ndo vix breviore at sesqui tenuiore, 3i0 et 4to 
minutis, 50 conico crassiore et longiore, 6to iterum minuto, tribus ultimis intus 
dilatatis crassitie subbrevioribus ; tarsi non dilatati, articulo 2ndo paulo breviore, 
Zio fere obsoleto, unguiculari elongato, unguibus integris. 
I have a little hesitation in referring the species here described to Redten- 
bacher’s Microsphera, as the mandibles are not entire, as described by him, but 
armed with three very minute teeth. The palpi agree in form, but the third 
joint of the tarsi is not cordiform, and indeed is scarcely visible. Redtenbacher’s 
insect is pubescent, while ours is glabrous, and this character is one of great 
constancy in this family. The genus Orthoperus (Stephens) also agrees nearly 
with our insect, but is described as having the club of the antenne two jointed ; 
the inaccuracy of the English authors in the description of minute species is 
however so well known, that no great stress should be laid upon that character, 
especially as according to all analogy it must be impossible in this tribe for a 
genus to have but two joints in the antennal club. Pithephilus (Heer) is con- 
sidered by Erichson as identical with Microsphera (Redt.), although it is 
described as having pentamerous tarsi. This mistake might readily occur, as 
the joints are very closely united. There can be no doubt about the proper 
place of the genus in this tribe, as the wings are strongly ciliated just as in 
Corylophus. 
1. M. glabra, nigro-picea, ovata, nitida, elytris obsoletissime punctu- 
latis. Long. :02. ; 
Middle and Southern States; on léaves. Ovate, a little narrowed behind, 
moderately convex, entirely piceous black, shining. Head deflexed, thorax 
more than twice as wide as long, narrowed in front, emarginate at apex, 
scarcely margined on the sides; base obsoletely sinuate, posterior angles rec- 
tangular. Scutellum minute. Elytra narrowed a little posteriorly, rounded at the 
apex, and a little shorter than the abdomen, very sparsely and obsoletely punc- 
tured; feet slender, black. 
