MASTOSTETHUS. 23 



16. Mastostethus versicolor. 



Mastostethus versicolor, Lacord. Mon. p. 662. 

 Hab. Mexico. 



17. Mastostethus phaleratus. 



Mastostethus phaleratus, Klug, Jahrb. Ins. p. 221 ; Lacord. Mon. p. 663. 

 Mastostethus dohrnii, Baly, Journ. Ent. i. p. 281, t. 13. f. 5. 



Hab. Mexico, Oaxaca ; Costa Rica, Cache (Bogers). 



As will be seen by the above synonyms, I have united Mr. Baly's species with that 

 of King ; from Lacordaire's description I am absolutely unable to distinguish them. 

 Curious mistakes, however, seem to have taken place in regard to this insect, 

 whose elytra are described by Mr. Baly as "clothed with very short suberect 

 hairs ;" in the type before me I am unable, even with the strongest glass, to discover 

 any hairs. In the catalogue of Gemminger and von Harold, Mr. Baly's species is 

 classified in the genus Agathomerus, no doubt on account of the description in 

 regard to the pubescence of the elytra ; while Mr. Baly himself has described it as 

 belonging to Mastostethus. In every respect the insect agrees with the description in 

 Lacordaire's Monograph. 



About twelve specimens have been collected by Mr. Rogers ; and they all agree 

 perfectly with the type, and show no trace of hairs on the elytra. It is a true 

 Mastostethus. 



18. Mastostethus hieroglyphicus. 



Mastostethus Meroglyphicus, King, Jahrb. Ins. p. 222 ; Lacord. Mon. p. 663. 

 Hob. Mexico. 



19. Mastostethus novemmaculatus. (Tab. I. fig. 19.) 



Mastostethus novemmaculatus, Klug, Jahrb. Ins. p. 211 ; Chevr. Col. Mex. Cent. ii. ; Lacord. Mon. 

 p. 668. 



Hab. Mexico. 



The antennae of this species (the colour of which Lacordaire could not give, on 

 account of his specimen only possessing one joint) are entirely rufous, and slightly 

 longer than the thorax. 



20. Mastostethus placidus. (Tab. I. fig. 22.) 



Mastostethus placidus, Baly, Cist. Ent. i. p. 127. 

 Hab. Mexico. 



21. Mastostethus lavatus. 



Mastostethus lavatus, Baly, Journ. Ent. i. p. 281, t. 13. f. 6. 

 Hab. Mexico, Oaxaca. 



