1975] 
Lawrence & Stephan — Cerylonidae 
147 
convex, slightly flattened mesially, punctation moderately coarse and 
dense, the interstices shiny. Scutellum transverse. Elytra about 1.42 
X as long as wide and 2.50 X as long as pronotum ; sides weakly 
rounded, almost parallel basally, the margins somewhat explanate, 
with finely, but sparsely and irregularly serrate edges; punctures of 
two types: large, somewhat rectangular ones, closely packed in regu- 
lar rows, and very fine ones occurring in the intervals, both types 
bearing suberect hairs. Aedeagus about as long as abdomen; tegmen 
(fig. 7) with fused parameres and very long median strut; median 
lobe about as long as tegmen, very narrow, with long basal struts. 
Types. Holotype, Fairchild Trail, Barro Colorado Island, CA- 
NAL ZONE, Jan. 28, 1959, berlese sample, B-180, heart of old 
palm on ground (H. S. Dybas) [FM]. Paratypes: MEXICO: 
San Luis Potosi : 2, 8 mi. N. Huichihuayan, June 20, 1941 (H. S. 
Dybas) [FM]. Veracruz: 1, Cordoba, Aug. 4, 1969, berlese sam- 
ple, B-173, tropical evergreen forest (S. & J. Peck) [MCZ, on 
slide]. CANAL ZONE: 1, same data as holotype [JL]. 
Distribution. Florida and northern Mexico, south to the Isthmus 
of Panama. We have been unable to locate the specimen from 
Florida mentioned by Sen Gupta and Crowson, although we are 
assuming that it is conspecific with the Mexican and Central Amer- 
ican specimens. 
Biology. Possibly associated with rotten palm wood. Specimens 
of O. solitaria from New Caledonia and the Loyalty Islands were 
collected under bark. 
Ceryloninae Billberg 
This subfamily includes all of the remaining cerylonids, which 
are characterized by the lack of a frontoclypeal suture and the pres- 
ence of relatively long and slender maxillary lobes, aciculate maxil- 
lary palps, and a distinctly crenulate margin on the last ventrite. 
The last feature, which may be present but much less obvious in cer- 
tain murmidiines, is actually a series of vertical ridges on the in- 
flexed margin of the ventrite (fig. 1); these form an interlocking 
mechanism with a corresponding series beneath the elytral apices. 
All known cerylonine larvae and adults in &t least six genera have 
evolved highly modified, piercing mouthparts, with an elongate, 
pointed labrum, and mandibular and maxillary stylets (see p. 134). 
Although there is little argument concerning the limits of the 
subfamily, whose distinguishing features are primarily derived, the 
interrelationships among the included genera and the limits of cer- 
