384 Rev. T. A. Marshall on new Genera 



with or without cyaneous blotches or black dots, usually four in 

 number, upon the elytra, which, in a few instances, are wholly 

 cyaneous. The thorax is always testaceous. 



Four species have hitherto been described — 4-maculata, Oliv., 

 granulata and chloroptera, Germ., and testacea, Fab. Chevrolat 

 (D'Orbigny's Diet. s. v. Metazyonycha) gives Eumolpus pictus, 

 Perty, as appertaining to the genus. I have a specimen of this 

 insect before me, from the Marquis la Ferte^s collection, where 

 it stands as Endocephalus pulchellus, Dej. It belongs to a widely 

 different group, and will probably form a new genus, allied to 

 Endocephalus. 



Eighteen or twenty undescribed species appear to exist in 

 collections. Those which I have before me may be thus tabu- 

 lated : — 



I. Elytra testacea. 



A. Immaculata, costata. 



a. costis alternis altius elevatis granulata, Germ. 



/3. costis omnibus sequalibus ; antennis 



* testaceis, medio uigris testacea, Fab. 



** nigris, basi testaceis Tejucana, ined. 



B. Maculata. 



«. maculis magnis cyaneis. 



* maculis 2 maximis connexa, ined. 



** maculis A~& ; tarsis 



t obscxiris crucifera, ined. 



ft testaceis ; antenn. artic. 8™. 



§ testaceo 4-maculata, Oliv. 



§§nigro; antennae 

 X graciles, colore 



IT fusco, basi testaceae cMorospilota, ined. 



HIT totae testacese ... humilis, ined. 



XX hoc in genere crassiusculae 4-notata, Dej., ined. 



^. punctis 4 nigris ; punctis anterioribus sitis 



* in callo humerali humeralis, ined. 



** medio inter marginem et suturam tetrasticta, ined. 



II. Elytra cyanea v. viridia. 



«. costata, costis completis tricolor, Perty. 



)3. striatopunctata, costis apicalibus ; margine 

 laterali 



* testaceo chloroptera. Germ. 



** concolore amasia, ined. 



Metaxyonycha connexa, sp. ined. 



Jkf. oblonga, convexa, testacea; antennarum articulis 4-12 nigris; 

 thorace nitido, parce punctate : elytris costatis, punctatis, punctis 

 inter costas gemellatis ; singulis macula magna oblonga cyanea, 

 medio intus emarginata. 



Long. lin. 5|, lat. hum, 2 lin. 



Head very finely punctured, more strongly in the interocular 

 fovea : eyes small, seneous ; mandibles tipped with black. First 



