228 SUPPLEMENT. 
et robustis( ¢ 9 ), 14-articulatis, art. 14° appendiculato ; oculis haud prominentibus, collo latiori; thorace 
sicut in P. californico, sed differt margine antico medio sat profunde emarginato, angulis posticis productis 
sed vix spinosis; elytris crebre intricato-rugulosis et punctulatis ; tibiis multo grossius quam in P. flohri 
granulatis. 
Long. 1 in. 6 lin. ad1 in. 9 lin. g§ 9. 
Hab. Mexico, Ciudad in Durango, 8100 feet (Forrer). 
Resembles P. flohri; but certainly distinct, not only in the number of antennal 
joints in both sexes and the shorter and broader joints of the male, but in the form of 
the thorax in both sexes. In P. flohri the front edge is nearly straight, or describes 
a single gentle curve from spine to spine; whilst in P. mexicanus (in both sexes) it is 
trisinuate, the middle sinuation remarkably deep. The hind margin shows also a 
striking difference, being strongly bisinuated in P. mexicanus, so that the middle part 
forms a broad lobe; whilst in P. flohri it is nearly straight, but abruptly sinuate from — 
the angle to the long and sharp basal spine. The head in P. mexicanus is remarkably 
narrow, the eyes being not prominent, and the neck thick and broader than the part 
across the eyes. 
PITHOCLES (p. 4). 
Pithocles procerus (p. 4). (Tab. XVI. figg.33,49.) 
_ To the locality given, add:—Mexico, Misantla (Hége), Juquila (Sallé); GuaTemaLa 
(Sallé, Sarg), Coban (Champion). 
DEROBRACHUS (p. 4). 
Derobrachus longicornisg (p. 4). 
Derobrachus longicornis, Bates, Trans. Ent. Soc. 1872 (nec 1869 ut supra citat.), p. 166. 
To the locality given, add :—Guatema.a (Sallé), El Reposo (Champion); Costa Rica 
(Sallé) ; Panama (Boucard), David, Volcan de Chiriqui (Champion). 
The male only of this species has been described. It is a much-elongated species, 
with elytra narrow, nearly parallelogrammical (¢.¢. scarcely at all dilated at the sides 
before the middle), and the surface chestnut-brown, silky, impunctate except the 
scabrous shoulders; the thorax rather closely rugulose-punctate and pubescent; the 
antenne longer than the body, with the groove of the third joint extending only half 
its length, the rest, like joints 4-11, being densely strigose. 
9. Nigra, aut castaneo-fusca, sericeo-nitens vel subopaca; antennis corporis dimidium attingentibus et arti- 
culis 1°-7™ supra levibus, 8°-11™ crebre strigosis ; thorace nudo. 
Long. 20-28 lin. 
Var. &. Antennarum articulo 3° sine sulco. 
Hab. Guatemata (Sal/é). One example. 
Var. 3. Elytris subtiliter punctulatis. 
Hab. GuatTEmMA.a, El Reposo (Champion). One example. 
