16 Mr. James Edwards’ Synopsis of 
3. Frons pale brown, the side margins, a stripe down the 
middle, and a series of fine curved transverse lines down each 
side, yellow; cheeks with a fine black line next the frons and 
clypeus. Crown greenish yellow, with a biarcuate line across the 
middle, and a pair of irregular pentagonal spots near the hind 
margin, black. Pronotum and scutellum yellowish green, the 
former sometimes irregularly marked with black in front, the 
latter with an abbreviated impressed transverse line near the base. 
Elytra subopaque, blackish blue, glaucous during life, membrane 
fumose. Abdomen above blue-black. Legs yellow, the claws and 
a fine stripe on the inner side of the hind tibie black, the spines 
of the latter springing from black points. Elytra sometimes green, 
with the nerves narrowly bordered with blackish. 
2. Elytra green, the costa narrowly whitish, nerves narrowly 
bordered with blackish. Length, 51—9 mm. 
This exceedingly handsome insect is very abundant 
in damp grassy places. The var. arundinis, Germ., 
has the elytra pale, with the nerves widely margined 
with blackish. 
XIII. ACOCEPHALIDA. 
Crown always distinctly separated from the face, generally by a 
well-defined ridge, its dise more or less excavated or bearing 
impressions, frequently transversely striate in front, at least 
distinctly sculptured. Ocelli on or adjoining the ridge which 
separates the crown from the face, or, if that is absent, on the 
forehead. Elytra generally coriaceous, with strongly-raised nerves ; 
appendix wanting or very narrow. 
The above definition of this family is the result of an 
endeavour to accomplish a convenient arrangement of 
the British genera included therein. In dealing with 
such limited material one has but little opportunity of 
giving due prominence to the natural affinities of the 
various genera, but it may be observed that Strongylo- 
cephalus and Acocephalus are very closely allied in such 
important points as the position of the ocelli and the 
structure of the wings and male genitalia. Hupeliax 
combines with its own peculiar form the situation of the 
ocelli which obtains in the two genera last named, 
while the structure of its wings and male genitalia 
conforms to the type which is found in the genera which 
succeed it in the arrangement here adopted. This genus 
is regarded by Dr. J. Sahlberg, with considerable reason, 
as forming a separate group equivalent to the families 
