22 Mr. James Edwards’ Synopsis of 
A. nigropunctatus, J. Sahl., 1. c., 360, 4. 
A. interruptus and polystolus, Scott, Ent. Mo. Mag., 
ix., 264 and 265. 
g. Upper side reddish yellow, becoming darker (in some 
examples almost black) towards the apex of the elytra, the latter 
with two wide more or less interrupted bands, and the apex broadly 
white. Face not impressed above. Crown feebly impressed just 
behind the apex, about equal in length to the pronotum, its middle 
keel very fine. Elytra a trifle longer than the abdomen; that 
portion of the dark ground colour which precedes the white space 
at the apex frequently assumes the appearance of a black or 
blackish band. Under side and legs pale; hind tibie generally 
blackish. Length, 3—3} mm. 
?. Upper side pale grey, more or less closely speckled with 
fuscous or black. Face very feebly impressed above. Crown 
tricarinate, about as long as the pronotum, more distinctly 
impressed than in the male. LElytra as long as the abdomen, 
their apex generally having a chequered appearance, owing to the 
apical areas being filled up with fuscous; not unfrequently two 
bands are indicated by a few pale spots, and generally the axillary 
and anal nerves are white at the apex; sometimes all the nerves of 
the corium are chequered with black and pale. Face pale, breast 
and abdomen blackish. Length, 33—4} mm. 
Common amongst low plants. The above description 
applies to the ordinary form of this species as it occurs 
in inland situations, but in salt-marshes, under Obione 
portulacoides, &c., the following marked varieties occur :— 
a. Upper side dark brown, the white spots forming the bands on 
the elytra very much reduced. (¢). 
b. Upper side entirely very dark red-brown. (3). 
c. Upper side brownish grey, the white space at the apex of the 
elytra bounded inwardly by a black band. 
Although, in deference to common usage, I put the 
three last-mentioned forms as varieties of albifrons, it is 
by no means certain that the salt-marsh insect does not 
constitute a good species; both sexes are at least one- 
third larger than the ordinary form, the angle of the 
crown in the male is more acute, and its apex is more 
distinctly reflexed; the upper side of the female is pale, 
uniformly and more or less closely irrorated with fuscous 
or black, the apices of the claval nerves are never white, 
nor are the elytra chequered with black and pale round 
the apex, as is generally the case in the ordinary form. 
