32 PSELAPHID A. 
Of this very distinct insect one immature example was found. It is no doubt a male, 
and has the front legs much incrassate, the femora being much swollen and the tibiz 
less so; the middle femora are also incrassate to a less extent; the metasternum is 
broadly depressed on the middle ; and the actual apex of the hind body is occupied by 
a deep depression. 
Leconte established a genus Eutrichites for a minute Bryagzis-like insect with uni- 
articulate club, and a condition of the elytral strie similar to that existing here; but 
his genus is stated in addition to have the antenne approximate, and therefore I cannot 
place B. simulatria in it. The difficulty of examining so minute an insect is increased 
in the present case by the immature condition of the solitary exponent, and by its wings 
being protruded. 
19. Bryaxis trimioides. (Tab. I. fig. 16.) 
Angustula, nitida, levigata, rufo-castanea, elytris sanguineis ; antennis brevibus, clava majore; capite levigato, 
plano, vertice tantum minute obsoleteque bifoveolato; prothorace angustulo, inimpresso; elytris stria 
suturali integra, intra humeros ad summam basin foveolatis ; abdomine subtiliter marginato, segmento 
basali quam secundum paullo longiore. 
Long. 14 millim. 
Hab. Guatemata, Zapote, Senahu, Tamahu (Champion). 
Antenne short, with the intermediate joints minute; the terminal three joints gradually 
forming a club, the last joint being stout. Head smooth, flat and shining, the clypeus 
slightly incrassate on each side; near each eye is a small very obscure fovea. Thorax 
small, a little narrowed behind, its greatest width in front of the middle ; polished and 
shining. Elytra without sutural stria, with a small fovea at the extreme base within 
the shoulder. 
Three examples. 
20. Bryaxis impubis. 
Subnitida, rufo-castanea ; antennis brevibus, clava majore; capite margine anteriore incrassato, utrinque inter 
oculos vage impresso; prothorace brevi, inimpresso; elytris haud foveolatis, stria suturali impressa ; 
abdomine brevi, segmento basali haud elongato, quam secundum paullo longiore. 
Long. 1 millim. 
Hab. GuatEMALA, Tamahu (Champion). 
Antenne short, with joints 3-8 small, the ninth and tenth joints also small, broader 
than the preceding, and strongly transverse, the terminal joint very large and acuminate. 
Head small, with the clypeus elevated ; a depression on each side near the eye. Thorax 
small, short, a good deal narrowed behind, with a single minute puncture in the middle 
in front of the base. Elytra obsoletely punctulate, without basal impressions, but with 
a moderately deep sutural stria. 
This species at first sight closely resembles B. trimioides, but is really very distinct ; the 
antenne have the ninth and tenth joints smaller, so that it is difficult to decide whether 
