DISCOLOMA.—HOLOPHYGUS. 497 
3. Discoloma humerale. (‘Tab. XV. fig. 24.) 
Subcirculare, depressum, fuscum, limbo ferrugineo ; subtilissime punctulatum, pube erecta evidenter vestitum. 
Long. 3 millim. 
Hab. GuateMata, Duefias (Champion). 
Club of antenna longer than broad, its extremity quite truncate. Thorax almost 
impunctate. Elytra with the expanded margins very broad, reddish in colour, the disc 
being fuscous; the red colour extends inwards at the shoulder, forming a humeral 
mark; the punctuation is fine and not dense; the explanate margins are marked off 
from the body by a very conspicuous series of large punctures, but there is no trace of 
other large punctures. 
We have received only two examples of this species; it appears to be quite distinct 
from D. vestitum. 
4. Discoloma circulare, sp. n. 
Subcirculare, depressum, fuscum ; subtilissime punctulatum, pube erecta evidenter vestitum. 
Long. 24 millim. 
Hab. Panama, Volcan de Chiriqui (Champion). 
This insect is very closely allied to D. humerale, but is unicolorous, and has the 
punctuation and pubescence rather finer and more dense. 
Both species are well distinguished from D. vestitum by the broader explanate margin, 
and the entire absence of larger shallow punctures on the disc. 
HOLOPHYGUS, gen. nov. 
Corpus rotundatum, subconvexum. Antenne 10-articulate; clava uniarticulata. Coxe omnes minute, sat 
distantes. 
Antenne inserted on the front of the head, the basal joint incrassate, the terminal 
one forming a long slender club. Mouth placed at the front of the head, but quite 
beneath. yes small, very convex, finely facetted. Prosternum short; front cox 
distinctly but not widely separated ; acetabula closed. Mesosternum prominent in front 
of the middle coxz, which are moderately distant. Metasternum short. Hind coxe 
minute, globose, not very widely separated; more distant from the lateral margin of 
the abdomen than from one another. First ventral segment as long as the two 
following segments together. Epipleure very broad. Legs slender; tibie quite simple, 
without spurs. ‘Tarsi 3-jointed, second joint small. 
There can be no doubt that this genus is allied to Discoloma, although the appearance is 
so different. The unique specimen has been injured, and has the point of the prothoracic 
side-piece broken off on one side, thus rendering the corresponding acetabulum open. 
In addition to the two genera of our fauna the only other member of the subfamily 
Discolomine is the South-African genus Notiophygus. The insects forming it have a 
BIOL, CENTR.-AMER., Coleopt., Vol. II. Pt. 1, June 1899. 3 $* 
