DIPLOTAXIS. 161 



9. Diplotaxis crinigera. 



D. poropygi proxime affluis, minor, castaneo-fulva, nitida, pilis erectis fulvis undique et densius quani in 

 D. -poropyge vestita ; clypeo antice lateribusque fortius sinuatis ; thorace valde differfc densius et subti- 

 lius punctato, angulis posticis fere rectis medioque angulatim dilatato ; pygidio et propygidio grosse 

 confluenter punctatis. 



Long. 7g-8 millim. 



Sab. Guatemala, near the city [Champion). 

 Two examples only. 



10. Diplotaxis corrosa. 



D. asnece similis, sed minus angusta, postice dilatata, rugoso-punctafca etc. Obscure viridi-senea, parum nitida, 

 grosse confluenter vel ruguloso-punctata, postice interdum brevissime griseo-setosa ; elytris lateribus setis 

 longis rigidis griseis fimbriatis ; clypeo trapezoidali, angulis anticis (in $ acutius) angulatis, genis paullulum 

 rotundatis ; thorace post medium rotundato-dilatato, angulis posticis valde obtusis, spatio discoidali lsevi ; 

 elytris costulis duabus sat eonvexis; pygidio grossissime et densissime punctato; ventre minus grosse 

 et dispersius punctato, griseo-setoso ; tarsis rufo-piceis ; antennis palpisque nigris. 



Long. 6^-7 millim. 



Hab. Mexico, Alvarez Mountains (Br. Palmer). 



Var. D. pacJiucana. Elytra plerumque vitta lata utrinque rufa. (Tab. IX. fig. 25.) 



Sab. Mexico, Pachuca in Hidalgo (Edge). A large number of examples. 



Apparently allied in some respects to B. rugosipennis, Blanch., which has, however, 

 the antennae, palpi, legs, and pygidium red. The males have not finely fimbriated 

 anterior tarsi as in B. oenea. The colour is uniform. We figure an example of the 

 variety from Pachuca. 



11. Diplotaxis coriacea. 



Angusta, aeneo- vel cupreo-fusca, dense et sat longe griseo-pilosa ; capite parvo, clypeo trapezoidali supra concavo, 

 antice valde sinuato, discrete (fronte dense) punctato ; thorace longe post medium rotundato-dilatato 

 (angulis rotundatis) deinde antice valde angustato, dense sequaliter punctato ; elytris dense subrugulose 

 punctatis, costulis vix perspicuis ; pygidio densissime, ventre paullo sparsius, grosse punctatis ; palpis 

 antennisque rufis ; pedibus piceo-rufis ; tibiis anticis acute 3-dentatis. 



Long. 6|-8 millim. 



Bob. Mexico, Presidio and Ventanas (Forrer), Cordova (Salle). 



The pubescence in well-preserved examples is tolerably long, slanting, dense, and 

 regular over the whole surface from the forehead to the pygidium inclusive ; on the 

 underside it is abundant, but more irregular in length. The single example from 

 Cordova in the Salle collection (bearing the MS. name Diplotaxis coriacea, Klug) is 

 more brassy and has the pubescence shorter (partly abraded) than Forrer's specimens 

 from more northern localities. 



The head is not very different in shape (comparing examples of the same sex together) 

 from that of B. cenea ; but the clypeus appears to be a little narrower, and more 

 narrowed in front, with sharper apical angles. 



biol. centk.-amee., Coleopt., Vol. II. Pt. 2, January 1888. YY 



