272 Transactions of the Boyal Society of South Africa. 
sinuosely emarginate from a third of the length ; they are finely 
coriaceous, and have no distinct traces of discoidal raised lines; under 
side closely aciculate punctate. 
Length 7-9 mm. ; width 3-3|- mm. 
Cape Colony (Grahamstown). 
Tribe ZONITINI. 
Key to the Genera. 
A^. Prothorax strongly campanulate. 
B-. Upper part of the claws pectinate. 
Maxillse moderately robust, upper lobe short ; body glabrous, 
eyes lateral Zonitomorpha. 
Maxillse slender, upper lobe long, penicillate, body briefly 
pubescent, eyes sub-contiguous beneath Zonitoschema. 
B^ Upper part of the claws not pectinate. 
Maxillas very slender, upper one with a long pencil of hairs ; 
body densely pubescent ; eyes lateral, elongated . . . . . . Iselma. 
A\ Prothorax transverse or only slightly campanulate. 
B. Upper part of the claws pectinate. : 
Head produced into a long triangle ; upper lobe of maxillas very 
long, corneous, briefly hairy inwardly only, but ending in a 
fine pencil of hairs Zonitodema. 
Head produced into a short triangle ; upper lobe developed into 
a very long filiform process the whole surface of which is covered 
with short hairs Nemognatha. 
ZONITOMOEPHA, n. gen. 
Plate XXII., fig. 7a. 
Mentum hexagonal, as broad as long, ligula very short with the mem- 
brane lining it very long, deeply-scooped V-shape in the centre and fringed 
there with a short, erect pubescence ; labial palps moderately long, the 
ultimate joint truncate at the tip ; maxillae somewhat robust, the inner lobe 
densely hairy, the upper one densely penicillate, some of the hairs are stiff 
and bristle-like ; maxillary palps like the labial, distinctly long ; mandibles 
very long, arcuate and sharp at tip, projecting much beyond the labrum 
which is truncate at apex, as long as the epistome, and ciliate pubescent 
at the tip ; head much longer than broad, truncate behind, with the pos- 
terior angles well defined and provided with a long neck ; eyes reniform 
but broadly separated on the upper and on the under sides ; antennae 
r 
