NILIO. 471 
The Guatemalan examples are of a more fulvous and unicolorous tint than the two 
before me from Mexico. 
2. Nilio fulvo-pilosus. 
Brownish-fulvous, slightly shining, the elytra rather darker and sometimes of a redder tint, the sides of the 
prothorax and of the elytra (broadly) and the suture (narrowly) reddish-testaceous, the entire upper surface 
densely clothed with erect fulvous hairs. Head sparsely and somewhat coarsely, the prothorax more 
finely and sparingly, punctured; antennz with joints 4-11 piceous or black, the rest testaceous ; elytra 
almost straight at the base (if viewed from above), the shoulders somewhat rounded and only moderately 
prominent, each with nine regular rows of rather coarse punctures placed upon shallow stris, the punc- 
tures not finer towards the apex, the interstices almost flat and (when viewed under a strong lens) 
sparsely and minutely punctured; legs and under surface obscure testaceous. 
Length 4-5 millim.; breadth 3-33 millim. 
Hab. Panama, Volcan de Chiriqui 3000 feet (Champion). 
Numerous examples. J. fulvo-pilosus may be easily separated from NV. chiriquensis 
by the much smoother interstices, more regularly punctured strie, and less prominent 
shoulders of the elytra, differently-coloured antenne, fulvous pubescence, narrower 
shape, &c. The shoulders are more rounded than in the other Central-American 
species. The Colombian J. lafertei, Thoms., is apparently an ally of this insect; but 
the former is described as having joints 3-11 of the antenne black, the elytral inter- 
stices punctured, and the colour red. NV. fulvo-pilosus was found in company with 
N. chiriquensis, but much more sparingly. 
3. Nilio thomsoni. (Tab. XXI. fig. 20.) 
Brownish-fulyous with the sides of the prothorax and of the elytra(broadly) and the suture (narrowly) lighter, 
or unicolorous red, slightly shining, thickly clothed with erect fulvous hairs. Head and prothorax mode- 
rately finely and somewhat sparsely punctured, the disc of the latter smoother; antennz with joints 6-11 
piceous or black, the rest testaceous; elytra almost straight at the base (if viewed from above), the 
shoulders prominent, each with nine rows of coarse punctures placed upon shallow stri, the punctures 
becoming coarser and a little more scattered towards the sides and apex, the interstices feebly convex and 
(when viewed under a strong lens) very sparsely and very minutely punctured; legs obscure testaceous. 
Length 43-5 millim.; breadth 33-43 millim. 
Hab. Guatemata, Teleman (Champion) ; Nicaracua, Chontales (Belt, Janson). 
Three examples only. This species is chiefly distinguished by its coarsely punctured 
strize, the punctures still coarser towards the sides and apex, and almost smooth inter- 
stices of the elytra; it is allied to NV. fulvo-pilosus. One of the two specimens from 
Nicaragua is of a unicolorous-red colour, but does not differ otherwise from the others. 
4, Nilio chiriquensis, (Tab. XXI. fig. 21.) 
Brownish-piceous with a slight bronzy tint, slightly shining, the head, the sides of the prothorax (broadly) and 
of the elytra, and the suture (narrowly) obscure testaceous, the entire upper surface densely clothed with 
erect cinereous hairs. Head and prothorax finely and sparsely punctured, the disc of the latter smoother ; 
antenne with joints 6-11 piceous or black, the rest testaceous ; elytra almost straight at the base (if viewed 
