COLYDIUM. 467 
about similar at the tip; grooves rather coarsely biseriately punctate. Ventral 
segments densely strigose-sculptured. Male with some long hairs on the middle 
joints of the antenne. One specimen. 
The resemblance of this insect to the well-known European C. elongatum is very 
remarkable. The head is narrower in front in C. chiriquense, and the supra-ocular 
carina very fine; besides this, the thorax is rather less sparingly and more coarsely 
punctate, and the front angles are distinctly, though only slightly, prolonged. C. chiri- 
quense is also extremely similar to C. guatemalenum, but has the front angles of the 
thorax less produced, the second costa of the elytra less elevated behind, and the 
interstices less coarsely punctured. From C. mexicanum, the more southern species 
is readily distinguished by the densely strigose ventral segments. 
5. Colydium puncticolle, sp. n. 
Subcylindricum, minus nitidum, nigrum ; subtus piceum, abdomine rufo; capite prothoraceque dense fortiusque 
punctatis, hoc tristriato ; elytris costatis, costis sat alte elevatis, subeequalibus. 
Long. 7 millim. 
Hab. Mexico, Zacualtipan (H6ége). 
Although we have received only one example of this species, and although it is very 
similar to C. guatemalenum, I entertain no doubt that it is distinct, and will be easily 
enough identified by the coarse and close punctuation of the thorax. The outer margin 
of the lateral stria is very strongly raised so as to look like a costa. ‘The first costa of 
the elytra is strongly raised at the base, and continues evenly so to the apex; the 
second costa is at the base not quite so strongly raised as the first, but afterwards 
becomes more elevated, so that on the declivity it is a little higher than the first costa. 
The sutural costa is more sharply defined than it is in C. guatemalenum. The punc- 
tuation of the deep grooves is coarse and of the usual nature. The ventral segments 
are coarsely rugose-sculptured. 
The unique specimen is no doubt a female ; it has no pubescence on the epistome. 
6. Colydium championi, sp.n. (Tab. XIV. fig. 27.) 
Angustum, cylindricum, nigrum, sat nitidum; prothorace unistriato; elytris ad basin haud costatis, interstitiis 
secundo quartoque (costis prima et secunda) posterius alte elevatis. 
Long. 4 millim. 
Hab. Guatemata, Capetillo (Champion). 
Antenne quite short, but with very large club. Head finely punctate, without supra- 
ocular carina. Thorax very long and slender, almost parallel; anterior angles obtuse ; 
surface rather finely and closely punctate, with a well-marked stria along the middle, 
but without the usual lateral strie. Elytra slender, somewhat shining; the normal 
coste scarcely to be detected at the base, but the normal first costa very strongly 
3 O* 2 
