350 Mr. W. H. Nunney on a new West-African Insect. 
in this subgenus, though it is either a very aberrant species 
or the type of a closely allied genus—I am inclined to think 
the latter. Should it eventually be considered not con- 
generic, I propose the name of Ceratopyga. 
The description of the species is as follows :— 
6. Head moderate, hardly broader’ than the thorax ; 
vertex deeply bilobate, of shining metallic green. Eyes 
moderate, not contiguous, but very closely approximated, 
brown. Occiput metallic green, produced in two obtuse 
cones. Front very hairy, the hairs black and, together with 
the labium, of a reddish yellow. Thorax moderate, nearly 
square, slightly sloping in front, which part is hairy, the 
hairs brownish, of a dark brownish hue, with dark metallic 
green reflections, and a faint yellow line medially on each 
side; beneath reddish brown. Wings hyaline, somewhat 
pointed; neuration black, the reticulation wide, becoming 
finer towards hinder and apical margins; 17 antecubitals ; 
hypertrigonal space 4-celled in upper wings, 3-celled in hind 
A 
B 
Ceratogomphus ? eneothorax, Nunney.—A. Appendages from above. 
B. Final segments and appendages in profile. 
wings; nodus nearer the pterostigma than the base in upper 
wings, as in Corduliine. Pterostigma short, black, covering 
two and a half cellules. Membranule short, narrow, black. 
The legs are long, dull black, somewhat spiny ; the femora 
with a lateral carina outwardly and a row of small teeth in- 
wardly ; the tibiz have a lateral carina inwardly and a row 
of minute teeth outwardly. ‘The tarsi are black, with long, 
deeply bifid, divaricate, curved claws. 
The body is long and narrow, cylindrical to the sixth 
segment, where it dilates to the eighth segment, the final 
segments decreasing gradually in width. Somewhat promi- 
nent rounded oreillettes occur on the second segment, and the 
