METAXYONYCHA. 129 



1. Metaxyonycha tridentata. (Tab. VI. fig. 12.) 



Metaxyonycha tridentata, Jacoby, P. Z. S. 1877, p. 512. 



Hab. Mexico, San Andres, Santecomapan {Salle); Nicaragua, Chontales {.Tanson, 

 Belt)\ Panama. 



The antenna3 of this species have joints five to seven, as well as the apical one, 

 black ; the head and thorax are very deeply punctured, the latter having three more or 

 less distinct teeth at the middle of the lateral margin; and the elytra are ornamented 

 with two metallic green spots, one at the shoulder, the other of a narrow transverse shape 

 below the middle. The specimen figured is from Nicaragua. 



2. Metaxyonycha chlorospilota. 



Metaxyonycha chlorospilota, Marsh. Monogr. Ann. & Mag. Nat. Hist. ser. 3, xiii. p. 385 \ 

 Hab. Mexico \ Cordova, Santecomapan, Playa Vicente (Salle, Edge). 



A great number of specimens were obtained by Herr Hoge, which I refer, as well 

 as those contained in M. Salle's collection, to the above species, but not without 

 some doubt, although they agree perfectly with the specimens so named in the 

 collection of Mr. Baly. Marshall, who gives a good description of the species, says the 

 punctuation is more faintly impressed (after comparing it with M. crucifera), and that 

 the general appearance is less glossy, due to a fine aeiculation between the punctures, 

 of which, however, I am quite unable to detect any sign ; the author further makes no 

 mention of the coarse transverse rugosities which are so plainly visible between the 

 elytral cost* near the base and the apex. I may further add that the female has a 

 much more transverse thorax than the male, the sides of which are scarcely dentate, but 

 rather more sinuate, the male being, besides that, distinguished by a distinct inward 

 curve and dilatation of the middle tibiae; the emargination of the latter is but very 

 slight in the present species. 



3. Metaxyonycha crucifera. 



Metaxyonycha crucifera, Marsh. Ann. & Mag. Nat. Hist. ser. 3, xiii. p. 385 \ 

 Metaxyonycha chevrolati, Dej. Cat. 3rd ed. p. 430 . 



Hab. Mexico 12 ; Beazil. 



The absence of the elytral cost* and the different shape of their metallic spots, which 

 leave the ground-colour between them in the shape of a cross, divides this species from 

 its allies. In the collection of Mr. Baly all the specimens are marked with the locality 

 « Brazil ;" and as neither M. Salle's nor Hoge's collection contains a single specimen, I 

 am almost inclined to believe that Marshall may have been mistaken as to the locality 

 of the species in question. 



biol. centk.-amee., Coleopt., Vol. VI. Pt. 1, December 1881. S 



