MYOXINUS.—ATHOMERUS. 137 
nigricanti crebre punctato, quinquetuberculato, tuberculis duobus anticis valde elevatis, spina laterali 
parva; elytris utrinque tuberculorum seriebus quinque, cristis basalibus serratis valde elevatis, interstitiis 
aspere ac conspicue punctatis. 
Long. 54 lin. 
Hab. Mexico, Orizaba (Sallé), S.W. Yucatan (Dr. Horn); Nicaragua, Chontales 
(Belt). 
Closely allied to Wf. pictus, but distinguished at once by the absence of black spots 
and belts from the elytra and by the more uniform brown colour and more conspicuous 
punctuation of the same. 
ECYRUS. 
Ecyrus, Leconte, Journ. Acad. Phil. ser. 2, ii. p. 160; Lacordaire, Gen. Col. ix. p. 651. 
A genus founded on a North-American species, the Lamia dasycera of Say, the only 
one, according to Lacordaire, to which its’ characters apply. He places it in his 
“groupe” Pogonochérides; but its structural characters and the facies of the insects 
point rather to an affinity with Alphus and Myoxinus. The following Mexican species 
is perfectly congeneric with £. dasycerus :— 
1. Ecyrus penicillatus. 
Oblongus, convexus, cano-tomentosus ; elytris fascia latissima ante medium fusca; antennis fuscis cano variegatis, 
subtus dense ciliatis, scapo cylindrico haud elongato juxta basin undique angustato, articulis 2°-3™ elongatis 
paullo curvatis ; capite angusto, vertice (ut in H. dasycero) bituberculato, fronte elongata ; thorace antice 
gradatim angustato, disco anteriore valde convexo et tuberoso; elytris grosse haud profunde striato- 
punctatis, utrinque penicillis tribus nigris lineatim digestis. 
Long. 47-53 lin. 
Hab. Mexico, Mirador, Vera Cruz (Sal/é). 
JAETHOMERUS. 
Aathomerus, Thomson, Class. Long. p. 338; Lacordaire, Gen. Col. ix. p. 742. 
Macronemus, Dejean, Cat.; White, Cat. Long. Col. B. M. 11. p. 376 (nom. preocc. et sine descr.). 
Eight species have been described of this singular genus, peculiar to Tropical 
America, 
1. Athomerus antennator. (Tab. XI. fig. 2.) 
Lamia antennator, Fabricius, Syst. El. ii. p. 288°. 
thomerus antennator, Bates, Ann. & Mag. Nat. Hist. ser. 3, ix. p. 118’; id. Trans. Ent. Soc. 
1872, p. 206°. 
Hab. Nicaragua, Chontales (Belé?).—Sourn America, Guiana, Amazons ?. 
The tubercles and ridges are much more prominent in the single Chontales specimen 
than they are in those from Cayenne and the Amazons; and I doubt therefore whether 
it is not a slender example of the following species. 
BIOL. CENT.-AMER., Coleopt., Vol. V., October 1880. t 
