LONGICORNIA. 253 
Differs from the allied species in the more scattered and indefinite tomentose 
markings of the elytra; these consist of minute specks of irregular shape and more 
or less confluent, spread over the surface, but chiefly in an ill-defined streak on the 
sides, and another shorter and oblique on the disc towards the base. 
PERIBCEUM (p. 27). 
Stizocera, Serville, Ann. Soc. Ent. Fr. 1834, p. 107 ? 
Stizocera, Serville, according to that author’s definition, is very near Peribeum, 
Thomson, differing chiefly in the third to the fifth antennal joints only being spined ; 
the oblong-ovate unarmed, smooth, but somewhat uneven and depressed thorax 
being a less important character, and the bidentate apex of the posterior femora existing 
in greater or less development in most species of Peribeum. None of the authors who 
have since dealt with the Spherionine appears to have been acquainted with the type 
of Serville’s genus S. armata, from Brazil. It seems, from the description, to be 
identical with my Nephalius fragilis (Trans. Ent. Soc. 1870, p. 274), though the size 
of the two insects is widely different, V. fragilis being 5% lin. and S. armata 10 lin. 
Being unacquainted with most of the described species of the group, I do not feel 
justified in substituting the name Stizocera for Peribeum, though it is highly probable 
the respective type species represent two distinct genera. The number of spined joints 
in the antenne, in short, may be a generic character: Serville gives for Stizocera 3-6, 
overlooking, I think, a minute spine at the apex of the sixth, whilst in the type of 
Peribeum (P. acuminatum, Thoms.), joints 3-8 have long spines. 
Peribeum villosulum (p. 27). 
To the localities given, add :—Mexico, Cordova (Sallé); Panama (Boucard). 
Peribeum bimaculatum (p. 27). (Tab. IV. fig. 15.) 
The reference to this plate was accidentally omitted on page 27. 
8. Peribceeum cribricolle. (Tab. XVIII. fig. 9.) 
Elongatum, angustum, rufo-castaneum, nitidum, erecte pilosum ; capite et thorace sat grosse discrete punctatis, 
hoc elongato-cylindrico, spatio abbreviato dorsali levi; elytris sat confertim punctulatis, apice recte 
truncatis, angulo suturali recto exteriori longe spinoso; antennis ( 9 ) articulis 3°-4™ subtiliter carinatis 
nec sulcatis, 3°-5™ apice (3° longius) spinosis ; femoribus clavatis et pedunculatis, posticis apice breviter 
bidentatis. 
Long. 73 lin. 9. 
Hab. Mexico, Almolonga (Hége). 
One example only. The species resembles Psyrassa in the long and recurved spine 
of the third antennal joint and cylindrical thorax ; but it differs in having a spine on 
