138 
Psyche 
[June 
— Body strongly convex ; antennae 8-segmented ; elytral punctation 
confused; mesosternum rounded anteriorly; metasternal suture 
absent Botrodus Casey 
7. Prothorax with large, ventral, antennal cavities, situated later- 
ally and formed primarily from the hypomera; metasternum and 
first ventrite with femoral lines; antennae 8-segmented. 
Lapethus Casey 
— Prothorax without antennal cavities, or with smaller, mesal 
cavities, formed entirely from the prosternum; metasternum and 
abdomen without femoral lines; antennae 10- or 1 i-segmented. 8 
8. Prosternum raised mesially and excavate laterally, forming two 
shallow antennal cavities; labrum acute at apex, beak-like; length 
less than 1.3 mm.; antennae 10-segmented, with a 1 -segmented 
club. Cerylcautomus Sen Gupta and Crowson 
— Prosternum without antennal cavities; labrum not acute; length 
more than 1.3 mm 9 
9. Procoxal cavities open behind or narrowly closed, the postcoxal 
bridge at apex less than 0.25 X as wide as cavity (fig. 9) ; 
intercoxal process of prosternum not widened behind; meso- 
sternum concave; antennae 11 -segmented with a 2-segmented 
club ; lateral margins of pronotum visible for their entire lengths 
from above. Philothermus Aube 
— • Procoxal cavities broadly closed behind, the postcoxal bridge 
more than 0.5 X as wide as cavity (fig. 10) ; intercoxal process 
of prosternum strongly widened posteriorly; mesosternum flat 
or slightly convex; antennae 10-segmented with 1 -segmented 
club; lateral margins of pronotum not visible for their entire 
lengths from above. Cerylon Latreille 
Euxestinae Grouvelle 
As used here, this group is equivalent to the tribe Euxestini de- 
scribed and delimited by Sen Gupta and Crowson (1973), and in- 
cluding the Cycloxenini and Tachyoryctidiini of Jeannel and Paulian 
(1945). Sen Gupta and Crowson admitted that those characters 
shared by the Euxestini, the Anommatini, and the Metacerylonini of 
Heinze (1944) are, for the most part, primitive for the family, and 
that all three tribes might be given subfamily rank. Of the eight 
known genera, only one, Hypodacne , occurs in America north of 
Mexico. The genus Euxestus Wollaston, however, includes a widely 
distributed Neotropical species which might be expected to occur in 
southern Florida (see below). 
