92 MALACODERMATA, 
Hab. Mexico, Jalapa, Cordova (Hége); Guatemata, San Gerénimo, Capetillo, 
Duefhas, Cubilguitz, Purula (Champion). 
The figure represents a specimen from San Gerdnimo, probably a male. 
Head punctured, rough, yellow, with black crown, sometimes only a black spot; 
narrowed behind, with prominent eyes. Thorax usually roughly punctured, and with 
a few indistinct tubercular swellings on the back of the disk, smoother in the female. 
The male (?) has the sides with indistinct front angles, between which and the hind 
angles are two projections, the hind angles themselves being acutely turned points. 
The elytra, especially in the male (?), are tricostate, with thickened sutures and margins, 
and strongly elevated shoulders as well; the yellow of the shoulder is occasionally 
extended over their base, but always leaves the suture black. The interstices between 
the cost are finely rugose. I have some doubt about the sex of these specimens; for 
in none of the examples have I been able to observe a divided ventral segment. This 
circumstance gives rise to doubts also as to the genus. The resemblance to some 
Lycidz, especially to Calopteron ichnoides and mimicum, as well as to Discodon histrio 
and. to some other Telephoride, is so extraordinary that they may readily be con- 
founded even after careful comparison. 
2. Silis varians. (Tab. VI. fig. 1, var.) 
Nigra ; capite et prothorace flavis, hoc vitta tenui, illo supra plus minusve nigris ; elytris flavis, triente apicali, in- 
terdum sutura etiam oblique nigris ; antennis compressis, subserratis, coxis pallidis. Long. 8-9 millim. g 9. 
Mas prothorace angulo posteriore minute oblique exciso ; unguiculis anticis et intermediis internis, posticis 
externis, lamina parva instructis; segmento ventrali apicali fisso. 
Femina angulo posteriore minute exciso. 
Hab. Mexico, Toxpam, Tuxtla (Sallé) : GuaTEMALA, Vera Paz, Chacoj, San Isidro, 
San Juan, Teleman, San Joaquin, Panima, La Tinta, Tactic, Duefias, Zapote 
(Champion). 
Var. elytris flavis. 
Hab. GuateMaLa, Vera Paz, Teleman, Chacoj, Panima. 
Var. nigra, prothoracis lateribus, et humeris tantum flavis. 
Hab. Mexico, Juquila (Boucard, coll. Sallé). 
A common and widely-spread species in Mexico and Guatemala, mimicking various 
species of Lycide and Cleride in its different forms. The thorax is minutely notched 
immediately before the hind angles in both sexes; and this, with its flattish, slightly 
costate elytra, shining thorax, of a semioval form, with a straight truncate base, as wide 
as the base of the elytra, and rather wide compressed antenne, are the best general 
characters by which it may be known. 
The black portion of the elytra often commences on the suture at its base, gradually 
widens till it meets the margin about one third from the apex. 
