32 ]\lr. C. J. Galiaii on new 



^<ElapMdion mutatinn, sp. n. 



Elaphidion tomentosum 5 , Obevr. 



Castaneum, pube grisea deuse obtecturn, prothorace dorso quinque 

 tuberculis — tuberculo medio cariniformi, tuberculis duobus posticis 

 obsoletis ; elytris basi dense punctatis, punctis poue medium 

 evanescentibus, singulis elytris humero et plaga dorsali prope 

 medium subnudis, castaneis, apicibus singulis bispinosis ; antennis 

 articulis 3" et 4" uni-, O^-IO'" bispinosis. 



Hal. Cuba, Florida. 



Under the name Elaphidion tomentosum Chevrolat included 

 two very distinct species. The females which he has described 

 are the females of the present species, the male of which I 

 saw in the possession of Dr. Horn when he was last on 

 a visit to England. Two female specimens from St. Dom- 

 ingo, which are undoubtedly the females of E. tomentosum^ 

 are in the British Museum collection. Except- in the much 

 shorter antennjB these two present no differences of import- 

 ance from the male Like the male they have the presternum 

 truncated and vertical behind. In E. mutatum the prosternum 

 is feebly arched and almost flattened behind, the species there- 

 fore belonging to the Hypermallus section of the genus. The 

 spines at the apices of the joints of the antennas do not stop 

 with the seventh joint, as Chevrolat's description seems to 

 imply, but, gradually becoming smaller, are met with up to 

 the tenth joint. Dr. Horn's male specimen, which was from 

 Keys, Florida, differed from the females only in having 

 slightly longer and slenderer antennsB and in having the apical 

 border of the last abdominal ventral segment pointed in the 

 middle and sinuate towards the sides. In the female this 

 segment is rather sharply rounded at the apex. 



E. tomentosum^ Chevr., bears a very strong resemblance to 

 E. mucronatum^ Say, but is to be distinguished by the much 

 less close punctuation of the elytra and of the sides of the 

 prothorax. 



HORMATHUS, gen. nov. 



This genus is formed for an interesting little species from 

 St. Domingo belonging to the Ihidion group. It has the 

 characters which Lacordaire has given for the genus Cijcni- 

 dolon^ with the following differences and additions : — Fifth 

 joint of the antennae, in addition to the third and fourth, 

 strongly thickened, none of the joints carinated. Prothorax 

 very slightly constricted in front of the middle. Elytra with 



