78 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 92 
4. Pronotum strongly narrowed in front___--_--------------- subg. Holosus 
Pronotum distinctly narrowed behind_---_---_----------- subg. Neolosus 
5. Pronotum with longitudinal depression along side from base__ subg. Lispinus 
Pronotum with abrupt fovea at side near basal third_-_-_-----_- subg. Spinilus 
6. Integuments of head, pronotum, and elytra entirely impunctate, smooth, 
shining, fi) 4t.os!. soe iss ye ieee eee ashe sub seeds subg. Nacaeus 
Integuments of head, pronotum, and elytra more or less densely punctured or 
sculpiunedwe.4 2.54 = ate Ao fe See oe ee ee 7 
7. Pronotum parallel or narrowed only in front_--------------- subg. Rumeba 
Pronotum narrowed behind, usually obviously_-_--2_-------------------- 8 
8. Base of pronotum about three-fourths as wide as base of elytra; elytra and 
tergites without row of punctiform foveae--____- subg. Pseudolispinodes 
Base of pronotum not less than nine-tenths as wide as base of elytra; elytra 
with two and each tergite with one pair of punctiform foveae, all in line, 
those of tergites sometimes less evident__-/_--...---_------------=--:. 9 
9. Femora very much enlarged; pronotum with two large punctiform foveae 
along (fONUUMaTOINe = seo. se oe eee eee ee subg. Liberiana 
Femora only moderately enlarged; pronotum without foveae along front 
MNOTOIN Eo oe ee ee ee subg. Liberiella 
The groups herein outlined are characterized in part below. 
Synonymy has been added to the genera with discussion of certain 
points. 
Subfamily OSORIINAE 
Antennae 1l-segmented, inserted under the anterior corners 
of the vertex, near the eyes; maxillary palpus 4-segmented, filiform; 
labial palpus 3-segmented; gular sutures united or closely approxi- 
mated at least in part (or absent); abdomen entirely without parater- 
gites; first and second abdominal sternites absent (Humalus has some 
trace of sclerotization). 
Tribe LIsPININI 
Anterior coxa usually small and globose, without a transverse 
sulcus on anterior face; anterior coxal cavities open behind. 
Remarks.—This tribe is homogeneous in most structural characters 
but is readily divided into five subtribes on less important features 
as well as by appearance. Of these five subtribes the Caloceri and 
Lispini form one group, while the Thoracophori, Eleusii, and Paralis- 
pini form another. 
Subtribe LISPINI 
Head not forming a neck; anterior coxae separated by a flat process 
of the prosternum; tarsi 5-segmented (sometimes indistinctly). 
Subtribe CALOCERI 
Head narrowed to a neck behind; anterior coxae separated by a 
flat process of the prosternum. 
