10 LONGICORNIA. 
The angle of the gene under the mandibles is obtusely tridentate ; the upper edge 
of the mandibles is convex from the base, nearly as in I. spinibarbe. 
4. Mallodon mandibulare. 
Mallodon mandibulare, Gemminger, Col. Hefte, x. p. 254 (1872). 
Mallodon gnatho, Leconte, Proc. Acad. Phil. 1858, p. 81. 
Hab. Sonora (Dr. Webb). 
Dr. Gemminger changed the name in consequence of the prior use of gnatho for a 
species then considered by White to be of the same genus. Although White’s species 
has since proved not to be a Mallodon, the two genera are so closely allied that perhaps 
it is advisable to retain the correction, in order to avoid possible confusion. 
TRICHODERES. 
Trichoderes, Chevrolat, Mag. Zool. 1843, Ins. p. 35. 
The following is the sole known species :— 
1. Trichoderes pini. 
Trichoderes pini, Chevr. loc. cit. p. 36, t. 113. 
Hab. Mexico, Las Vegas (Sal/é). 
Subfam. P@&CILOSOMINA. 
This subfamily is proposed to include those genera of Prionide which have finely- 
faceted eyes, and is equivalent to Lacordaire’s “Cohorte II]. Prionides vrais Pcecilo- 
somes.” The species, as a rule, are of brighter colours than those of the Prionine, 
and are diurnal in their habits. Nearly all are Tropical-American. 
MALLASPIS. 
Mallaspis, Serv. Ann. Soc. Ent. Fr. 1832, p. 188. 
About a dozen species are known of this handsome genus, all American. 
1. Mallaspis moreleti. 
Mallaspis moreletii, Lucas, Ann. Soc. Ent. Fr. 1851, Bull. p. 65; Voy. de Castelnau, Zool. Ins. 
" p. 180, t. 10. f. 7, a, 2 (1859) ; Ann. Soc. Ent. Fr. 1861, p. 104, 3. 
Hab. Guatemata, Vera Paz (Morelet). 
2. Mallaspis rhombodera. (Tab. II. figg. 4, 5.) 
M. wxanthaspidi (Guér.) affinis, at differt thorace antice valde angustato; supra viridi-enea, elytris interdum 
castaneis eeneo tinctis, vel toto rufo-castanea elytris apice obscurioribus; antennis eneis vel fulvo- 
castaneis; capite, thorace elytrorumque basi subconfluenter punctatis, his a triente anteriore usque ad 
apicem subtiliter vermiculato-rugulosis ; scutello maculis aureo-sericeis duabus; antennis corpore multo 
brevioribus, articulis 3°-4™ dilatato-compressis, tertio quam. sequens duplo Tongiore, ceteris compressis 
gradatim brevioribus. 
Long. 1 poll. ad 1 poll. 7 lin. 
Hab. Panama, Chiriqui (22bde).—CoLoMBIa. 
