LONGICORNIA., 231. 
2(p). Derobrachus geminatus. 
Derobrachus geminatus, Leconte, Proc. Ac. Phil. vi. 1858, p. 233; Coleop. of Kansas and E. 
New Mexico, p. 19, t. 2. figg. 12 and 12a’. 
Hab. Norta America, Texas to Lower Californiat—Mexico, Parras in Coahuila 
(Dr. Palmer). 
This species differs from all the foregoing in the eyes being widely distant on the 
forehead in both sexes, in the head being not at all narrowed behind the eyes, and in 
the much finer and sparser raised strive of the 4-11 male antennal joints. 
Derobrachus apterus (p. 4). (Tab. XVI. figg. 73, 89.) 
To the locality given, add:—Mexico, Cerro del Gallego (Sailé), Jalapa? (Flohr) ; 
Guatemata (Sallé), Purula, Cerro Zunil (Champion). 
On my pointing out that the male of this singular species was a great desideratum, 
Mr. Flohr made a special search for it, and at length succeeded in digging out from a 
dead tree several examples with the apterous females. A single male, perfectly 
similar to one sent me by Mr. Flohr, was taken also by Mr. Champion at Cerro Zunil. 
It differs from all other species inter alia by the hairy legs and the absence of grooves 
from the tibie, which are simply compressed. 
3. Elongatus, parallelogrammicus, castaneo-fuscus, oculis supra fere contiguis ; antennis quam corpus longiori- 
bus, articulo 3° fere usque ad apicem sulcato, 4°-11™ crebre strigosis; thorace brevissimo, longe et acute 
spinoso, dorso erecte pubescenti creberrime et grosse confluenter rugoso, marginibus longissime fulvo- 
aureopilosis ; elytris relative longissimis, creberrime et sat grosse intricato-rugosis ; pedibus sat gracilibus 
fulvo-hirtis ; pectore Jonge et densissime fulvo-aureo-piloso. 
Long. 1 in. 9 lin. C. 
The apical thoracic spine in the one example (Mexico) is bifid, in the other (Guate- 
mala) perfectly simple. The female varies in a similar way, and in size ranges from 
1 in. 5 lin. to 2 in. 10 lin. 
5. Derobrachus (?) cylindroidus. 
Hab. Guatemawa, Purula (Champion). 
A single female specimen, of doubtful genus, but clearly allied to Derobrachus. It 
is of similar elongate form to many Derobrachi, but rather more convex ; hence more 
cylindrical, and the hinder margins of the elytra are thickened and rounded without the 
usual sutural spine. The whole upper surface is coarsely and densely sculptured. 
The eyes are distant above and narrow; the maxillary palpi greatly elongated, the 
labial palpi unfortunately broken ; the thorax has only two lateral spines, but there is a 
prominence in the place of the third (middle) spine. The terminal joints of the 
antennee have on each side an elongate sensitive fovea, and only the eleventh joint is 
striated above. 
