September, 1870.] py 
Genus 4.—Dicranorropis, Feb. 
Head almost square. 
Undeveloped form, &. Keels of the head and face white, interstices black. 
Crown, pronotum and scutellum greyish- or whitish- 
yellow, the latter with a black spot beyond the side 
keels. Elytra greyish-white, apex of the clavus 
with a short black streak. Abdomen black, with a 
narrow more or less interrupted white dorsal line. 
Genital segment large, the sides much projected and 
black ; upper portion white .........1. hamata, Boh. 
A common species and easily recognised by its curiously formed 
genital segment. 
Genus 5.—Strroma, Pied. 
Head transverse, the anterior margin of the crown but a little way 
in front of the eyes. 
Undeveloped form, 8. Head, pronotum and scutellum yellow, the two 
latter somewhat brownish. Face at the base with a 
black cuneate patch on each side of the furcate 
middle keel. Pronotum and scutellum each with a 
black patch beyond the side keels, posterior margin 
of the former pale. Elytra greyish-yellow, not 
covering half of the abdomen. Abdomen piceous, 
on the back pitchy-brown........... ...1. affinis, Fieb. 
Tndeveloped form, g. Face at the base with a black patch on each side 
of the furcate middle keel, the patches generally 
united into one. Scutellum only with a black patch 
beyond the side keels. Elytra as in the former 
species. Abdomen castaneous, darker on the 
Bidestira. ci iekeltete ele eee asus Babe 
The easiest character by which to separate these species is in the 
markings on the pronotum and scutellum, whilst au examination of the 
structural differences of the styloid processes will establish their distinct- 
ness. In the former, the apex of these is somewhat of a fish-tail 
shape, and in the latter aculeate and curved. 
Undeveloped form, 8. Head and pronotum bright yellow, the latter 
frequently darker between the side keels next the 
posterior margin. Scutellum and elytra black, the 
latter covering more than half of the abdomen. 
Abdomen black or yellow. Genital segment above 
generally brownish or yellow.........8. pteridis, Boh. 
