ZETHUS. 43 



fascia? on metatliorax yellow. Scales margined with brown ; a 

 narrow yellow submarginal line bordering all the segments of 

 the abdomen ; the 6th segment yellow. Feet black, knees a little 

 fulvous ; tibiae furnished with silky-golden hairs. Intermediate 

 tibia? with a yellow line. Wings subhyaline, with brown veins. 

 On each side of the clypeus is a very dull, obsolete, yellow macula. 



? . Clypeus rounded, a little truncate at tip, punctured, rugose, 

 black. 



% . Clypeus broad-quadrate, strongly punctured, slightly 

 truncate in the middle of its inferior margin, with two hardly 

 sensible edges ; black ; the lateral yellow spots often distinct. 

 Antennae rather thick; the whole terminal hook and the last three 

 joints of the flagellum beneath, yellowish. 



Var. %. — a. Clypeus yellow, with the top part and extreme 

 margin black; sometimes also with two black dots on the yellow. 



b. Clypeus more or less margined with yellow. 



Var. % 2. — a. The spots of the forehead wanting. 



b. The posterior margin of the prothorax not margined with 

 yellow. 



c. The anterior margin having only the angles yellow, or also 

 a little line in the middle. 



d. Prothorax black. 



Hab. The Gulf side of Mexico. Orizaba. (Sumichrast.) 

 This species, although very variable in its coloring, is very 



distinct by its filiform pedicule and by the strong strigse of its 



dorsum. It has the fades of an Elimus. 



C. Species which I do not knoio, and of which the antennae % , 

 have not been described. 1 



32. Z. albopictus Smith. — J . Niger, sat tenuiter punctatus ; cinereo 

 sericeus ; autennis subtus apice ferruginescentibus ; elypeo utrinque 

 flavo-notato ; pronoti margine, macula subalari, punctis 2 in tegulis, 

 scutelli margine interrupto, punctis 2 post-scutelli tibiisque extus, 

 albidis ; abd. segmentorum 1-3 limbo et lineola (utrinque?) in basi 

 secuudi, albidis ; alis pelluuidis, secundum cos tarn fuscis. Longit, 4| lin. 



1 As the form of the abdomen has not been described, I presume that it 

 offers nothing remarkable, and that in consequence all these species. per- 

 tain to the division Zcthusculus. 



