212 LAMELLICOENIA. 



3. Antennas ^-jointed. 

 (? Gen. Anonetus, Erichson, Ins. Deutschl. iii. p. 658.) 



70. Lachnosterna mexicana ? (Tab. XL fig. 20, c? .) 



Ancylonycha mexicana, Blanch. Cat. Coll. Ent. i. p. 138 l ? 

 Hab. Mexico, Vera Cruz 1 , Jalapa, Oaxaca (Edge). 



Five examples from Herr Hoge's collection agree fairly well with Blanchard's 

 description, with the exception of the number of antennal joints. Blanchard placed his 

 species in the 9-jointed division of the genus, but possibly in mistake (other inaccuracies 

 of the same character by this author having been since corrected by Lacordaire). We 

 cannot, however, be certain of this, and the identification of this interesting little species 

 must remain in doubt. I will add to Blanchard's description that the tarsal claws are 

 slender, slightly and gradually broadened to the base, without basal dilatation, and 

 furnished with a short, sharpened tooth near or a little below the middle. This 

 character seems to forbid the association of L. mexicana with Erichson's genus Anonetus 

 (a genus without described species), in which the claws, as I have already stated under 

 Phytalus poculifer, have a quadrate tooth or dilatation at the base. The mandibles 

 are invisible in repose in some examples, but quite visible along their external edge, 

 and at the tips, in others. The species has a structural peculiarity in the width of the 

 hind coxae, especially at their junction, where they cover the usually visible first ventral 

 segment, and in some examples also the second. 



All the examples appear to be of one sex, apparently male, the sixth ventral segment 

 being plane or slightly concave, and with the fifth punctulate and clothed with 

 stiff hairs. 



The following species are represented by single specimens only, in some cases 

 imperfect, and cannot with any advantage be named or located in the above classifi- 

 cation of the genus. 



71. Lachnosterna ? 



Hob. Mexico, Parada [Salle). 



72. Lachnosterna ? 



Hab. Mexico, Peras (Salle). 



73, Lachnosterna — 



Hab. Beitish Honduras, B, Sarstoon (Blancaneaux). 

 74. Lachnosterna ? 



Hab. Mexico, Toluca (Hbge). 



