76 Mr. G. C. Champion’s Notes on 
much as in Penthelispa truquii and the N. American 
Endectus. 
Pycnomerus stenosoma, n. sp. 
Elongate, narrow, cylindrical, flattened above, shining, ferruginous, 
glabrous. Head large, as wide as the thorax, finely punctate, deeply 
bifoveate in front, the eyes small; antennae short, with an abrupt, 
freely 2-jointed club, joint 10 strongly transverse, 11 ovate, nearly 
as wide as 10. Thorax longer than broad, narrowed posteriorly, 
compressed at the sides at about the middle, finely margined, the 
angles obtuse ; the surface somewhat closely impressed with oblong 
moderately coarse punctures, the interspaces alutaceous. Elytra 
elongate, subparallel, scarcely wider than the thorax, finely punc- 
tate-striate, the interstices narrow and alutaceous. Beneath finely 
punctate; fourth ventral segment in ¢ with a small tubercle in the 
middle behind, its apical margin slightly sinuate. Legs short. 
Length 2 mm. 
Hab. GuatEMALA, Livingston, Atlantic coast (Barber 
and Schwarz, in U.S. Nat. Mus.). 
Two specimens, one of which has been presented to the 
British Museum. Smaller and narrower than the Antillean 
P. aequicollis, Grouv., the thorax and elytra more finely 
punctured, the terminal joint of the antennal club relatively 
larger. 
« TYRTAEUS, n. gen. 
Antennae (fig. 6a) short, 9-jointed, the joints very closely articu- 
lated, completely exposed from above, 7-9 dilated into a very 
large, compact oval club; head broad, the epistoma large, clearly 
defined; labrum transverse, exposed; eyes rounded; mandibles 
feebly emarginate at tip; mentum small, leaving the maxillae ex- 
posed; last joint of the maxillary palpi long, stout, cultriform ; 
anterior coxae narrowly separated, the cavities closed; prosterum 
transversely excavate in front of the anterior coxae, the sutures 
indistinct, the intercoxal process slightly widened behind; inter- 
mediate coxae narrowly, the posterior coxae rather widely, separated ; 
metasternum long; elytra oblong, the epipleura reaching the last 
ventral suture and widened forwards; prothorax short, margined at 
sides and base, without trace of basal fovae ; legs short, slender ; tarsi 
simple, 4-jointed, sparsely pilose beneath ; body oblong, glabrous, 
Type, ZT. rufus. 
The two species belonging to this genus have somewhat 
the facies of an Anommatus. The principal characters of 
Tyrtaeus are—the 9-jointed antennae, with a very large, 
