Malacoderm Genera Prionocerus and Idgia. 337 
quite sparsely punctulate. Elytra very elongate, at the 
middle twice as wide as the prothorax, densely granulato- 
punctate. Legs very long. 
3. Posterior femora feebly clavate ; anterior tarsal joints 
1-3 with a narrow black comb along their inner edge; 
terminal dorsal segment entire. Genital armature (PI. XI. 
figs. 9, 9a): lateral lobes. sinuate, curved inward and some- 
what hooked at the tip, as seen from above (fig. 9a), broad 
as seen in profile (fig. 9) ; median lobe gradually acuminate, 
the apex broadly, abruptly dilated, subsagittiform. 
Length (excl. head) 11-14, breadth 34-42 mm. (¢ 2.) 
Hab, Arasra, Yemen (Millingen, in Mus. Brit.). 
The above description is taken from four males and three 
females. They agree with Walker’s diagnosis of P. hirtus, 
except as regards their larger size, the unnotched eyes *, 
and the broad joints to the antenne. His type, from Tajura, 
on the opposite African coast, appears to have been lost. 
The median lobe of the male is very peculiarly formed. 
10. Ldgia laticornis, sp. n. 
Elongate, somewhat widened posteriorly, shining, the 
elytra duller ; finely pubescent and sparsely nigro-setose ; 
fulvous, the head (the labrum and epistoma.excepted) and 
the antennal joints 5-11 black, the elytra nigro-cyaneous 
or black. Head long, narrow, strongly produced anteriorly, 
the labrum about as long as broad, hollowed down the 
middle ; eyes very large, moderately convex, narrowly 
separated in 3, more distant in ?; antenne (<') elongate, 
joints 4-11 broad, stout, feebly serrate, tapering towards 
the apex, 4 not longer than 3, 5-10 subequal in length, 
longer than broad, 11 deeply excavate within, longer than 10, 
(2) much shorter and more slender. Prothorax wider 
than the head, oblong-subquadrate, narrowed anteriorly, 
uneven, sparsely punctulate. Elytra very long, at the 
middle twice as wide as the prothorax, densely granulato- 
punctate. 
6. Anterior tarsal joints 1-3 with a black comb along 
their inner edge ; anterior tibie slightly curved towards the 
apex ; posterior trochanters toothed behind. Genital 
armature (Pl. XI. figs. 10, 10a): lateral lobes rather 
short, narrowed and slightly sinuate distally, as seen from 
above ; median lobe stout, abruptly bent downward and 
broadly, angularly dilated towards apex, the apical portion 
straight, hooked above and beneath at tip. 
* Almost certainly an error of observation, 
