264 SUPPLEMENT. 
The two following extreme modifications merit separate mention :— 
Var. I. alacre. (Tab. XVII. fig. 23.) Minus, pallidius testaceo-rufum, elytris apice brevissime et swpe obtusis- 
sime truncatis, maculis quatuor eburneis nigro-marginatis, anteriori rotundata, posteriori transversa, sepe 
angusta et fascieeformi. . 
Long. 4-54 lin. 
Hab. Mexico, Ventanas (Forrer), Cuernavaca (Sallé), Almolonga (Hége), Tehuantepec 
(Sumichrast) ; GuavemaLa, El Tumbador (Champion). 
Var. I. sericans. Majus, pallide cinereo-fulvum. Capite, thorace et corpore subtus letissime argenteo-sericeis, 
elytris recte attenuatis apice longe spinosis. 
Long. 83 lin. 
Hab. Panama, Volcan de Chiriqui (Champion). 
Both the above forms are connected with the typical J. textile by insensible grada- 
tions, and cannot therefore be treated as distinct species. 
7 (a). Lbidion ventricosum. (Tab. XVIII. fig. 22.) 
I. textili affinissimum, differt tantum elytris post medium dilatatis. Obscure fuscum antennis pedibusque 
nigricantibus, vel pallide fulvum; antennis pedibusque pallide testaceis: subtiliter fulvo-tomentosum et 
erecte setosum, subtus aurato-sericeum. 
Long. 54-6 lin. 6 @. 
Hab. Panama, Bugaba (Champion). 
Numerous examples of this form were taken by Mr. Champion, all distinguishable 
from J. textile by the elytra being gradually dilated from a little before the middle to 
near the apex, whence they are more rapidly narrowed again, the apex itself having on 
each side a rather long and sharp slightly incurved spine, and the sutural angle being 
acute. In the dark brown examples the elytral spots are indistinct, and the insect 
resembles certain specimens of J. textile of the same colour from Coatepeque; but in 
the light tawny-yellow examples the spots are conspicuous, the hinder one not trans- 
verse and smaller than the anterior one. 
Ibidion obtusum (p. 33). 
Heterachthes obtusus, Bates, Trans. Ent. Soc. 1874 (nec 1878), p. 221, 2. 
To the locality given, add :—Mexico (Sallé, Baden) ; Guatemaua, Purula (Champion). 
The male has joints 8-6 without carine, slightly thickened but linear, the sixth 
not much thicker than the seventh. The tawny spots of the elytra vary in extent, the 
middle one being sometimes separated into two on each elytron, with the outer one 
joined to the apical spot. The following is an extreme variety, in which all the spots 
are reduced in size :— 
