310 GEO. H. HORN, M. D. 



to the other, the tips of the two clubs probably touching, (PI. VII, 

 fie. 19 c). A similar condition exists in Clambus except that there is 

 a median gular ridge and on each side a shallow fossa in which the 

 club rests, (PI. VII, fig. 19 a). In Calyptomerus however the case is 

 different. The head being much larger and broader and the antennae 

 arising so much in front of the eye^ the ridge in passing beneath the 

 head is arcuate inward leaving between it and the eye a wide space, 

 the antenna is consequently received on the side of the head beneath 

 and within the eye, and is curved in a somewhat spiral manner and 

 does not reach the gula at all, (PI. VII, fig. 19 b). 



Finally the abdomen varies in the number of the segments as will 

 be seen in the table. 



The genera may be thus separated : 



Elytra margined at the sides with distinct epipleurse. Coxal plates narrow. 



Antennae 11-jointed, club 3-jointed. Moderately distant from the eyes at base. 



Abdomen with seven segments Empelus. 



Elytra not margined at the sides, without epipleurse. Coxal plates wide. 



Antennae 10-jointed, club 2-jointed. Arising at a distance from the eyes. 

 Abdomen with six segments Calyptonierns. 



Antennae 9-jointed, club 2-jointed. Arising close to the eyes. 



Abdomen with five segments visible Clainbus. 



Empelus and Calyptomerus have the elytra slightly prolonged and 

 obliquely truncate, in Clambus rounded at tip not prolonged. 



In addition to the above genera M. Mulsant has described Lori- 

 caster (Opusc. Ent. xii, 1861, p. 139), said to have wide coxal plates, 

 three-jointed antennal club with non-contractile body. Through the 

 kindness of M. Henri Jekel I have been enaabled to examine a 

 specimen, and find it in every respect a Clambus resembling our 

 C. piiherulus. 



E9IPEL.US Lee. 



Head moderate in size, not rapidly narrowing behind, front moderately long, 

 oval, clypeus not distinct. Labrum small almost concealed. Mandibles as in 

 Clambus. Maxillary palpi moderately long, first joint very small, second long 

 and slender, third small and oval, fourth as long as second, oval, obtuse at tip, 

 rather flat with the under side concave. Eyes longitudinally oval, moderately 

 granulated. Antennae arising at a distance from the eyes, in a slight sinuation 

 of the sides of the front, the stem received in very distinct antennal grooves 

 beneath the eyes, the club received beneath the gula in an arcuate depression 

 which extends from one side to the other; eleven-jointed, first joint oval, flat, 

 suddenly narrowed at base, second less stout, much shorter and oval, 3 — 6 

 slender and long, gradually shorter, 7 — 8 small, rounded, 9—11 forming an 

 oblong club, the last joint longer, oval at tip. Thorax beneath as in Clambus. 

 Scutellum small. Mesosternum moderately separating the coxae and very finely 

 carinate. Metasternum moderately long not excavated in front. Posterior 

 coxae contiguous, the plate much narrower than in Clambus and dilated over 



