148 THE ENTOMOLOGIST. 



the thorax ; the flavous elytral bands are about half the width of 

 the discoidal black vitta, in which respect the species somewhat 

 resembles D. glabrata, Fab. In two of the specimens this black 

 intermediate band is emarginate at its outer margin, but no 

 other differences are to be found. If the flavous colour of the 

 elytra is taken for that of the ground colour, the latter may be 

 described as having a narrow sutural and lateral black margin 

 and a discoidal broader black band not reaching to the apex. 



DiSONYCHA LABIATA, Sp. n. 



Broadly ovate, fulvous ; the autencje, the labrum, breast, the 

 tibiae, and tarsi black ; thorax impunctate ; elytra scarcely perceptibly 

 puuctured, pale fulvous, a narrow sutural and submarginal stripe, 

 joined at the apex, aud a broader discoidal one not extending to the 

 latter, black, Leugth 7 millim. 



Head impunctate, with the exception of a punctured impression 

 near the eyes, fulvous ; the extreme vertex sometimes black ; frontal 

 tubercles obsolete ; clypeus triangularly thickened with a small fovea 

 above its base ; labrum black ; anteunje ratber slender, black, the 

 joints, with the exception of the small second one, elongate, the third 

 slightly shorter than the fourth joint, the basal one more or less 

 fulvous ; thorax distinctly narrowed anteriorly, scarcely twice as broad 

 as long, the sides rounded, narrowly margined, the anterior angles 

 slightly oblique, not produced, the surface entirely impunctate, rather 

 convex ; scutellum black ; elytra very minutely, sometimes scarcely 

 perceptibly punctured, convex, the suture of each elytron and a longi- 

 tudinal stripe close to the margins very narrowly black, joined at the 

 apex, the middle of the disc with a broader band, not quite extending 

 to the apex ; below fulvous, rather densely clothed with grey pube- 

 scence ; the breast fuscous ; the extreme apex of the femora and the 

 tibiae and tarsi black. 



Hab. — Mexico. 



Of this species I have lately received two exactly similar 

 specimens without detailed locality which do not agree with any 

 of those described by me in the ' Biologia Centr.-Amer.,' nor 

 with those described previously. The insect seems to be inter- 

 mediate between D. caroliana, Fab., and D. crenicolUs, Say. It 

 differs from the first-named in the black labrum (always pale in 

 the allied species), in the unspotted thorax, and in the black 

 tibiae ; from D. crenicollis, with which the species has the black 

 labrum in common, it differs in the width of the discoidal black 

 band, which is distinctly narrower than the fulvous portion, not 

 as wide or wider, as Dr. Horn gives as one of the distinguishing 

 points ; there is also an absence of the three black thoracic 

 spots in the present species. 



DiSONYCHA VENEZUELA, Sp. n. 



Elongate and parallel, black ; thorax closely and finely punctured, 

 fulvous, with a transverse black band ; elytra extremely closely punc- 



