766 SUPPLEMENT. 
Hab. Mextco, near the city (Hége), Guanajuato, Toluca, Puebla (Sa//é). 
This species resembles B. salvini, but the individuals are of rather larger size, and 
are readily distinguishable by the peculiar prominent carina at the apex of the meta- 
sternum; and the punctuation of the upper surface is denser and more rugose. The 
abdominal characters of the male scarcely differ from those of B. salvini, but the front 
tarsi are considerably larger in B. hoplites. I had two or three examples of B. hoplites 
before me when I described PB. salvini, and looked on them merely as an extreme form 
of that species, and thus one of them was figured as B. salvini. The examples now 
received of both species from Mexico show that the two are distinct. 
Berosus truncatipennis (p. 80). 
To the localities given, add :—Mexico, San Juan Bautista in Tabasco (Hége), Ventanas 
Forrer); Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion). 
The two examples from the State of Panama are unusually large and may be distinct, 
but they are in such a decayed condition that they will not bear manipulation. 
Berosus griseus (p. 80). 
Before the locality given, insert :—Mexico, San Juan Bautista in Tabasco (Hodge). 
3 (a). Berosus flavipes. 
Oblongus, nitidus, testaceus, capite superne aureo, prothorace in medio tenuiter fusco-bivittato, elytris fusco- 
maculatis; capite subtus nigricante, pectore abdomineque infuscatis ; elytris ad apicem communiter emar- 
ginatis, angulo suturali obtuso, utrinque dente parvo armatis. 
Long. 53-6} millim. 
Hab. Mexico, Mazatlan (Hoge), Presidio (Forrer). 
The palpi and antenne are flavous. The head is rather sparingly punctured. The 
thorax is finely punctate on the middle, the punctuation being double (that is, a very 
minute sculpture or punctuation is present in addition to the more visible punctures) ; 
at the sides the punctures are coarser. The elytra are deeply striate at the sides and 
behind, but at the base the striz are feeble, and are, indeed, replaced by serial punc- 
tures; the interstices are coarsely punctured at the sides and behind. The sexes are 
difficult to distinguish, but the male has the two basal joints of the front tarsi a little 
dilated. The ventral structure is similar in the two sexes: there is a small excision of 
the last ventral plate, and the excision is armed at the base in the middle with two 
minute approximate teeth. 
We have received six examples from Mazatlan of this species; and, from the same 
locality, two others that are slightly larger in size (7 millim. long), and have the bases 
of the femora darker and the sutural angle of the elytra slightly acute; whether the 
latter is a variety or a distinct species I cannot decide at present. 
