164 LAMELLICOENIA. 



21. Diplotaxis metallescens. 



Oblongo-ovata, glabra, nigro-Eenea, subnitida ; antennis, palpis et tarsis rufo-testaceis ; capite crebre rotundato- 

 punctato, sutura frontali lsevi ; clypeo breviter trapezoidali, angulis rotundatis, margine antieo leviter 

 sinuato : tborace discrete sed sat dense profunde punctate, post medium dilatato, angulis posticis obtusis- 

 simis ; elytris sat dense profunde punctatis, costis haud elevatis valde serie-punctatis, interstitio suturali 

 multipunctulato ; pygidio convexo, setoso, grossissime alveolato-punctato, abdomine grosse sat dense (medio 

 lteviore) punctate ; unguibus normalibus. 



Long. 8-9 millim. 



Sab. Mexico, Tepanistlahuaca (Salle). 

 Three examples. 



22. Diplotaxis ? 



Hob. Mexico, Parada (Salle). 



A single example of a species apparently allied to the preceding. 



23. Diplotaxis popino. 



Diplotaxis popino, Casey, Contrib. to the Descriptive and Systematic Coleopterology of N. America, 

 part ii. p. 179 x . 



Hah. Noeth America, Arizona 1 . — Mexico, Northern Sonora (Morrison). 

 III. Clypeus brevis, rotundatus. 



24. Diplotaxis simplex. 



Diplotaxys simplex, Blanch. Cat. Coll. Ent. i. p. 172 \ 



Oblongo-ovata, supra glabra, nitida, piceo-nigra vix metallescens, vel plus minusve rufo-testacea ; clypeo brevi, 

 late rotundato, apice perparum sinuato, supra transversim convexo, creberrime punctate, sutura frontali 

 valde impressa, medio angulata ibique fronte (sparsius et subtilius punctata) concava ; tborace disperse 

 baud grosse punctato, medio subangulatim dilatato, angulis posticis obtusis sed distinctis ; elytris sat 

 disperse punctatis, costis baud elevatis sparse minute seriato-punctatis : pygidio grossissime subalveolatim 

 punctato, rigide piloso ; subtus lateribus grosse punctato ; unguibus profunde fissis, dente inferiore latiore 

 valde curvato ; tibiis anticis 3-dentatis. 



Long. 7-8 millim. 



Hab. Mexico 1 , Puebla, Orizaba {Salle), Jalapa, Vera Cruz (Edge). 



This insect bears the name of D. simplex, Blanch., in the Salle collection, and is 

 probably that species, though the description is too vague to determine the point 

 satisfactorily. As some help towards identifying the insect, which is probably common 

 in collections, I have redescribed it. 



25. Diplotaxis hebes. 



D. simplici simillima, sed differt unguibus dente inferiore submediano et brevi apice subtruncato. Oblonga, 

 convexa : clypeo haud transverse convexo, piano, brevi, rotundato, apice fortius sinuato ; capite toto fere 

 Eequaliter discrete sat fortiter punctato ; thorace brevi, prope angulos posticos distinctos subrectos 

 impresso, paullo grossius quam in D. simplici punctato; elytris profundius punctatis, costis parum 

 distincte punctulatis : pygidio grosse alveolato-punctato, ventre medio fere lsevi. 



Long. 7| millim. 



