230 HISTERIDA. 
Upwards of forty examples have been captured, the majority of which are from the 
State of Panama. 
This species closely resembles 7. tuberculifrons, but the transverse strigosity of the 
forehead and the longitudinal sculpture of the sterna are sufficient to separate it from 
any described species. 
13. Trypaneus columellaris, sp.n. (Tab. VI. fig. 18, 3.) 
é. Cylindricus, parum elongatus, ater, nitidus; fronte strigoso-punctata, antice retro-angulata; rostro rufo, 
modice reflexo; pronoto sat dense punctato, minute transverso-strigoso, stria antice interrupta; elytris 
obscure brunneis, subtiliter punctatis; pygidio conico, sat dense punctato; prosterno brevi, in medio 
longitudinaliter sulcato, antice obtuso; mesosterno marginato, trisulcato, antico obtuso producto; antennis 
pedibusque rufo-brunneis; tibiis anticis 4-, intermediis 6-dentatis, posticis ciliatis. 
Q. Fronte leviter impressa; rostro obtuso, apice utrinque minute tuberculatis; pygidio compresso, obscure 
bifido. Long. 23 millim. 
Hab. GUATEMALA, Pantaleon 1700 feet (Champion). 
This insect is smaller than 7. vulcanius. The male has a transverse deeply sinuous 
ridge across the forehead at the base of the rostrum, which is a very remarkable specific 
character. In the female the apex of the pygidium is not so distinctly bifid as in the 
preceding species. 
Six examples, four males and two females. 
14. Trypanzus vulcanius, sp.n. (Tab. VI. figg. 19, 194, 3.) 
6. Cylindricus, parum elongatus, ater, nitidus; fronte transversa, rugosa, concava; rostro brevi, reflexo, 
compresso, margine vix elevato, apice obtuso at bifido; pronoto antice truncato, sparse punctato ; elytris 
subtiliter punctulatis; pygidio nudo, obtuso, sat dense punctato; prosterno trigono, in medio longitudi- 
naliter suleato ; mesosterno marginato; metasterno sparse punctato; tibiis anticis 6-, intermediis 7-den- 
tatis, posticis flavo-ciliatis. Long. 43 millim. 
Hab. Panama, Volcan de Chiriqui 3000 feet (Champion). 
One example. This species is rather larger than 7. tuberculifrons, which it may 
follow in the catalogue. The profile exhibits a bifid rostrum, which is very peculiar 
(fig. 19 a). 
15. Trypaneus aculeatus, sp.n. (Tab. VI. fig. 20, ¢ .) 
d. Oylindricus, niger, nitidus; fronte impressa; rostro paullo reflexo, apice acuto ; pronoto valide punctato, 
angulis anticis prominulis, stria laterali integra; elytris brunneis, sparse et subtiliter punctulatis ; pygidio 
conico, sat dense punctulato; prosterno brevi, medio late sulcato; meso- metasternoque sulcatis, longi- 
tudinaliter strigosis, laterali marginatis; antennis pedibusque rufis; tibiis anticis 5-, intermediis 6- 
dentatis. 
9. Fronte concava; rostro apice bidentato; pygidio acute et longissime producto. Long. 3} millim. 
Hab. Panama, Bugaba, Volcan de Chiriqui (Champion). 
Two specimens. In this species the sternal sulcus is continuous from the first 
segment of the abdomen to the apex of the mesosternum, interrupting anteriorly the 
margin of the latter. The first segment of the abdomen in the male is rugosely and 
irregularly striate, and the punctures on the under surface of the insect are very 
