330 OALAI^DEID^. [LeConte. 



Subfamily I. CALAISTDRID^. 



An excellent synopsis of the species of this subfamily, as represented in 

 our fauna is given by Dr. Horn in the Proceedings of this Society for 1873, 

 commencing on page 407. I have but a few new species of Splienoplwrus 

 to add, wluch seem scarcely worth describing at the present time. I shall 

 therefore confine myself to giving at greater length my views on the sub- 

 division of the subfamily into tribes and genera, which do not differ essen- 

 tially from those developed by Lacordaire, and followed by Horn. 



Side pieces of metathorax very wide, epimera 



hxrge RIIYAC'HOPIIORINI. 



Side pieces of metatliorax moderate, or narrow: 

 Mesosthoracic epimera broadly truncate ex- 

 ternally; club of antennae wedge-sliaped. spjhenophorini. 

 Mesothoracic epimera acute externally; club 



of antennoB oval CAi.AN URINI 



Tribe I. rhyn^hophorim. 



The species of this tribe are of large size, and with the exception of Rhyn- 

 chophorus, have the mandibles turned outwards as in the Rhinidw; in the 

 genus just mentioned, the mandibles are of the usual pincer-form with three 

 small apical teeth. The funicle of the antennaj consists of six perfoliate 

 joints, strongly constricted at tlie outer end; the club is transverse, trape- 

 zoidal, corneous, with the terminal face flat, spongy and sensitive. 



One species, R. cruentatus, represents this species in the Southern States. 

 It is parasitic on Ckamcerops palmetto. In consequence of the extension of 

 the mesothoracic epimera upwards, the humeral portion of the elytra is 

 truncated, as in Barini. The third joint of the tarsi is but little wider than 

 the second, not emarginate, fringed at the apical margin beneath. In the 

 (^ the tibiae, and to a less extent the thighs are densely fringed with long 

 yellow hair on the inner side: In the 9 the hairs are much less dense. The 

 genital segment is sometimes protruded; it is nearly smooth, and finely 

 channeled above in both sexes, but is longer and narrower in the 9. i'^ 

 which sex also the pygidium is more flattened, and more obliquely narrowed 

 at the tip . 



Tribe II. SPHEXOPHORINI, 



The species of this tribe are rarely large, but never very small. The 

 mandibles are always pincer-shaped, with three apical teeth. Tiie meso- 

 thoracic epimera are large, and truncate at tlie outer side, so that the out- 

 line of the elytra near the base is straight, and not oblique as in the preced- 

 ing tribe; the metathoracic episterna are rather narrow, and the epimera 

 small, though quite obvious. 



Three genera have been observed in our fauna. 



Spongy portion of antennal club flat SOYPHOPHORUS. 



'• " " " convex 2. 



