Abdera. | HETEROMERA. 43 
The four British species may be distinguished as follows :— 
J. Thorax with the sides margined almost to apex ; 
prevailing colour darker. (Addera, i. sp.) 
i. Thorax about as long as broad; upper surface 
finely sculptured. 
1. Thorax dark in middle, with the basal and 
apical margins more or less broadly yellow. . A. QUADRIFASCIATA, Steph. 
2. Thorax entirely dark, with the apex sometimes 
obscurely lighter . . . . A. BrFasciaTA, Marsh. 
ii. Thorax transverse ; upper surface rather strongly 
sculptured . . . A. TRIGUTTATA, Gy/ll. 
II. Thorax with the sides not margined i in n front ; pre- 
vailing colour lighter (Carida, Muls.). . . . . A. FLEXUOSA, Payk. 
A. quadrifasciata, Steph. Elongate, parallel-sided, moderately 
convex, very closely finely and subrugosely punctured, clothed with 
silky yellowish pubescence ; head varying from brown to reddish-tes- 
taceous, labrum yellow, antennz rather long and slender, reaching at all 
events to base of thorax, dark, with base and apex yellow ; thorax about 
as long as broad, with the disc dark, and the anterior and posterior 
margins more or less broadly testaceous ; scutellum transverse ; elytra 
black with two common waved reddish-yellow bands, under-side reddish 
or brown ; legs red or yellowish-red. L. 2/-33 mm. 
In decaying hornbeam, also in the short half-rotten stumps left on various trees 
where boughs have been broken off; occasionally by sweeping ; rare; Coombe Wood 
(Rye) ; Cobham Park (Champion) ; Tonbridge (Horner) ; Headley Lane, Esher, on 
fence (Gorham) ; New Furest ; Shropshire ; Dunham Park, Manchester (Chappell). 
A. bifasciata, Marsh. (bifleruosa, Curt.). Closely allied to the 
preceding, but less convex, and easily distinguished by its colour, which 
is pitchy black or black, with the base of the antenne yellowish, and 
the elytra with two fascie which are narrower and more waved than in 
A. quadrifasciata ; the upper surface is shining and clothed with yel- 
lowish pubescence ; punctuation very close and fine, subrugose ; legs 
ferruginous, tarsi lighter at apex. L. 2;-35 mm. 
Female longer than the male, with the thorax broader in propor- 
tion. 
In dead boughs of oak and ash trees; sometimes by beating and sweeping ; rare ; 
Esher, Wimbledon, Ripley, Forest Hill, Shirley, Ashtead, Cobham, Darenth, Birch 
Wood, Highgate, Southgate, Wimbledon (Champion, Power and others); New Forest 
(beaten by myself from a high hedge near Brockenhurst, in July 1877, from which I 
ovtained Apion sorbi, Conopalpus testaceus, &c. ; also taken by Mr. Blatch) ; Glan- 
villes Wootton; I also have specimens sent me by Dr. Chapman in a box containing 
beetles taken chiefly, if not entirely, in Herefordshire and Monmouthshire. 
A. triguttata, Gyll. <A delicate little species which may at once 
be distinguished from the two preceding by its transverse thorax, which 
is somewhat constricted in front, and the much stronger sculpture of the 
upper surface, which is distinct and rugose, and stronger on the elytra 
than on the thorax ; the pubescence is fineand silky ; the general celour 
