PHILOTHALPUS. 357 
rufescent ; mandibles piceous; head with a smooth space on the disk, and thorax with 
a rather broad line along the middle smooth. Elytra of a tawny-red colour, evenly and 
closely, somewhat finely punctate. Hind body acuminate behind, black, with only the 
hind margin of the penultimate segment narrowly yellow. 
Only a single specimen has been found; it is a female, and has the front tarsi 
distinctly dilated. The species is another close ally of P. segmentarius. 
7. Philothalpus prolixus. (Tab. VIII. fig. 24.) 
Niger, parum nitidus ; abdominis segmentis duobus ultimis rufis, femoribus picescentibus, elytris cyaneis ; pro- 
thorace crebrius fortiter punctato, medio linea longitudinali levigata ; abdomine dense punctato. 
Long. 13 millim. 
Hab. Panama, Bugaba 800 to 1500 feet (Champion). 
Antenne black, obscurely picescent at the extremity, elongate, the penultimate joints 
each considerably longer than broad; mandibles dark red, palpi piceous. Head very 
coarsely punctate, with only a small space on the middle smooth. Thorax evenly, 
rather coarsely and closely punctate, the smooth space along the middle broader in 
front and at the base than it is a little distance in front of the base. Elytra greenish 
blue, slightly longer than the thorax, rather closely and coarsely punctate, with a 
conspicuous black pubescence. Hind body closely and evenly punctate, black, with 
the hind margin of the fifth and the whole of the sixth segment reddish yellow; 
terminal segment and anal styles yellow, the latter brownish at the extremity. The legs 
are nearly black, the femora being of a very dark obscure red, and the tarsi paler, 
their terminal joint being red, the anterior tarsi infuscate red. The male has a broad 
emargination at the tip of the last ventral plate, and its front tarsi are much dilated, 
while in the other sex they are only slightly so. 
Hight individuals have been found. 
8. Philothalpus mexicanus. 
Niger, parum nitidus; abdominis segmento ultimo penultimique margine posteriore rufis, femoribus picescenti- 
bus, elytris cyaneis ; prothorace crebrius punctato, medio linea longitudinali levigata; abdomine dense 
punctato. 
Long. 12 millim. 
Hab. Mexico, Cordova (Sallé); GuatemaLa, Cubilguitz in Vera Paz ( Champion). 
This is extremely similar to P. prolixus, but is readily distinguished by the smaller 
extent of the red colour of the extremity; the thorax is a little more finely punctate. 
I have seen only four individuals, possessing sexual characters similar to P. prolixus. 
9, Philothalpus tinctiventris. 
Niger, parum nitidus ; abdomine rufescente, apicem versus dilutiore, basi nigro ; femoribus picescentibus, elytris 
cyaneis ; prothorace crebrius punctato, medio linea longitudinali levigata; abdomine dense punctato. 
Long. 11 millim. 
