COLPARTHRUM. Gi 
One male example. This is one of the most elegant forms of Lagriide known to 
me. C. vitticolle is allied to C. decoratum and C. calcaratum, but differs from both of 
these in the peculiar sculpture of the elytra (suggestive of that of certain species of 
Strongylium), and in the very slender antenne, the last joint of which is very long 
in the male. The tibie are thickly clothed with long erect hairs within, but are 
smooth and glabrous without. The last ventral segment in the male has on each side 
a long curved lobe, the lobe shaped very much as in the same sex of Alethia azteca 
(cf. Biol. Centr.-Am., Col. iv. pt. 1, p. 418, t. xix. fig. 8). The lighter-coloured portions 
of the elytra are flavo-testaceous, like the head, thorax, and legs. 
b. Tibie each with a single very long spur; elytra (and fifth ventral segment) sharply 
mucronate at the apex, and spotted. 
5. Colparthrum calcaratum. (Tab. III. fig. 23, 2.) 
Elongate, rather narrow, shining, varying in colour from reddish-testaceous to castaneous or reddish-brown, 
the sides of the prothorax often a little darker than the disc; the elytra each with a rather broad trans- 
verse flavous band before the middle (not reaching the suture and usually widening outwardly and 
extending to the lateral margin, but sometimes small and in the shape of a large spot), the flavous band 
usually surrounded (except laterally) by a broad belt of a darker and more piceous-brown colour, the 
lower margin of which is oblique, and the suture sometimes stained with piceous for some distance beyond 
the middle. Head with a broad and deep transverse impression (on either side of which is a setiferous 
puncture) between the eyes and a few setiferous punctures at the sides and behind, for the rest smooth, 
the eyes convex but rather small; antennz moderately slender, more or less ferruginous—the apical joint 
in the male about as long as, in the female shorter than, joints 9 and 10 united; prothorax cylindrical, 
much longer than broad, the sides completely immarginate, much rounded anteriorly, and compressed and 
strongly constricted behind, the hind angles prominent but not acute, the dise transversely grooved behind, 
the surface smooth ; elytra with prominent shoulders, slightly transversely impressed below the base, 
widest about the middle, with rows of coarse or moderately coarse punctures, which beyond the middle 
become (abruptly) very much finer, and do not (the sutural row excepted) extend to the apex, the inter- 
stices flat throughout, the first, third, fifth, seventh, and ninth each with numerous setiferous punctures 
scattered between the base and apex (the sete very long and erect), the apices sharply mucronate ; beneath 
varying in colour from testaceous to reddish-brown, very shining, the apical margin of the fifth ventral 
segment in both sexes sharply mucronate in the middle; legs long, more or less testaceous, the femora 
sometimes darker, the latter strongly clavate towards the apex and slender at the base, the tibise and 
tarsi long and slender, the tibie and the apical halves of the femora clothed on all sides with long erect 
hairs; the tibiee each with a single long sharp spur at the apex. 
Length 6-8 millim.; breadth 13-2 millim. (3 9.) 
Hab. Nicaragua, Chontales (Janson, Belt); Costa Rica, Volcan de Irazu, Cache 
(Rogers); Panama, Volcan de Chiriqui 3000 feet (Champion). 
Numerous examples. This remarkable species, which in some of its characters 
departs widely from any other member of the Lagriide yet described, is allied to 
C. decoratum and C. vitticolle. It differs from both, however, in the tibiee being each 
furnished with a single very long spur, and in each elytron and the fifth ventral segment 
being sharply mucronate at the apex in both sexes. C. calcaratum is smaller than 
C. decoratum (the elytra, as in that species, varying considerably in colour), and differs 
also in the tibiee and femora being clothed on all sides with long erect hairs; from 
