578 PHYTOPHAGA. 



joints of the antennae are obscure piceous, the other joints fulvous. In other respects 

 the species agrees with N. hondurensis. 



16. Neobrotica sex-maculata. 



Testaceous, the intermediate joints of the antennae piceous ; thorax transverse, deeply sulcate ; elytra strongly 

 costate, the interstices deeply punctured, two spots at the hase, two at, and two others below the middle, 

 dark violaceous. 



Length 3 lines. 



Head testaceous, impunctate ; antennas piceous, the basal two joints beneath and the ninth joint testaceous (the 

 apical ones wanting) ; thorax twice as broad as long, impunctate, with the usual deep sulcation ; elytra 

 each with about ten longitudinal costae, the interstices deeply, often geminate, punctate, a spot at the 

 shoulder, a smaller one near the scutellum, two spots near the middle, and two others, transversely and 

 somewhat obliquely placed, dark violaceous ; the underside and the femora testaceous, the tibiae and 

 tarsi piceous. 



Hab. Mexico, Tlatingo (Salle). A single specimen. 



17. Neobrotica denticornis. (Tab. xxxill. fig. 11, <? .) 



Testaceous, the antennae, tibiae, and tarsi obscure piceous ; thorax transverse, deeply sulcate ; elytra geminate- 

 punctate-striate, the interstices narrowly longitudinally costate, a transverse band at the base, another one 

 at the middle, and a semilunate mark at the apex of each, dark violaceous. 



c? . The third and fourth joints of the antennae swollen, deeply emarginate on their upper edge. 



Length 2 lines. 



Hab. Guatemala, Cubilguitz, Paso Antonio (Champion) ; Nicaragua, Chontales 

 (Janson). 



Smaller than N. sex-maculata ; the costae of the elytra less distinctly raised ; the spots 

 replaced by broad and deeply coloured bands — in one specimen they extend to the 

 suture (which is likewise dark violaceous), and in another the band at the base is sepa- 

 rated into two spots. The antennae in the female are simple; in the male they are 

 formed as in certain species of Cerotoma. 



An example from Chontales is figured. 



18. Neobrotica cavifrons. (Tab. xxxill. fig. 12, <y .) 



Black, the head, thorax, and legs fulvous ; elytra irregularly punctured, black, each with an angular narrow 

 stripe from the base to the sides (touching the suture about the middle), a short oblique stripe near the 

 apex, and the lateral margin flavous. 



£ . Head with a deep frontal excavation ; antennae with the third joint swollen, the fourth joint transverse, 



both with their inner apical angles acutely produced. 

 Length 2^ lines. 



J . Head fulvous, impunctate, deeply excavated below the antennae, the excavation furnished with a small 

 tubercle within and its anterior edge in the shape of a strongly raised ridge ; antennae (male) fulvous, stained 

 with piceous, the second joint very small, the third strongly swollen at the base, its inner apical angle 

 produced into a sharp point, the fourth joint shorter, transversely produced within, the following joints 

 rather short and nearly equal ; thorax almost twice as broad as long, the sides nearly straight, the posterior 

 angles produced into a small tooth, the disc with a rather shallow transverse sulcation not extending to 

 the sides, the surface fulvous, impunctate ; scutellum black ; elytra finely and irregularly punctured, the 

 interspaces somewhat rugose, the lateral margin narrowly flavous, a similarly coloured slightly oblique 



