LONGICORNIA. . 277 
RHAGIUM (to be placed at the head of the Subfam. Callichromine, p. 37). 
Rhagium, Fabricius, Gen. Ins. p. 51; Serville, Ann. Soc. Ent. Fr. 1835, p. 205; Ganglbauer, 
Bestimmungs-Tabellen d. Eur. Col., Verhandl. d. zool.-bot. Ver. 1881, p. 717. 
Stenocorus (Geoffr.), Lac. Gen. Col. viii. p. 428. 
A genus, with the exception of one species from the Cape of Good Hope, confined 
to the temperate zone of both hemispheres, and reaching high northern latitudes. 
Seven species have been described. 
1. Rhagium lineatum. 
Stenocorus lineatus, Oliv. Ent. Ixix. p. 13, t. 3. f. 223. 
Hab. Norra America .—Mexico, Morelia (Sallé), Las Vigas (Hége). 
Scarcely distinct from the European R. indagator, Fabr., and, like that species, 
probably found in pine-woods. 
PACHYTA (to precede the genus Gaurotes, p. 37). 
Pachyta, Serville, Ann. Soc. Ent. Fr. 1835, p. 213. 
A well-known north-temperate genus, ranging, like Rhagiuwm, into high latitudes. 
About thirty-five species have been described. The following presents all the structural 
characters of the genus, with the exception of a slight difference in the form of the 
thorax, but it is isolated from all other known species by its style of coloration. 
1. Pachyta costaricensis. (Tab. XX. fig. 1.) 
‘Oblonga, subelongata, postice (¢ ) modice angustata, opaca, nigra; abdomine testaceo-rufo, elytris miniaceo- 
rufis, macula magna quadrata circumscutellari apiceque late, nigris ; antennis articulis 3° et 4° brevibus ; 
capite et thorace sat grosse subconfluenter punctatis, hoc tuberibus elongatis duobus dorsalibus, sulco trans- 
verso basali sat profundo, tubere laterali conico ; elytris sparsim indistincte punctulatis brevissime setosis, 
apice rotundatis. 
Long. 7i lin. Co. 
Hab. Costa Rica, Volcan de Irazu 6000 to 7000 feet (Rogers). 
One example only, in a poor state of preservation; doubtless the living insect is 
much brighter in colour. 
GAUROTES (p. 37). 
Gaurotes donacioides (p. 37). 
To the Mexican locality given, add :—Oaxaca (Sallé), Cordova (Hége). 
3. Gaurotes maculosus. 
G. donacicidi proxime affinis. Fusco-eneus, elytris rufescenti-fulvis pilis adpressis cinereis maculatim vestitis, 
