HALTICA. 297 



6. Haltica rugicollis. 



Ovate, subdepressed ; dark violaceous, opaque ; antennae long, black ; thorax rugose-punctate ; elytra impunc- 

 tate, obsoletely longitudinally costate. 



Length 1| line. 



Head rugosely punctate above the eyes ; frontal tubercles small and oblong ; carina absent or only indicated by 

 a small tubercle ; clypeus triangular, very flat and finely rugose ; antennae slender, two thirds the length 

 of the body, the fourth joint one half longer than the third ; thorax transverse, the sides moderately 

 rounded, basilar groove very indistinct ; surface closely rugose and punctured ; scutellum impunctate ; 

 elytra slightly widened posteriorly, entirely impunctate and of an opaque dark violaceous, the entire 

 surface obsoletely but still distinctly costate, the interstices extremely finely granulate ; underside and 

 legs more shining, the latter clothed with yellowish pubescence. 



Hab. Mexico, Yolos, Totosinapan (coll. Salle). 



It will not be very difficult to distinguish this species by its entirely opaque colour 

 and the rugose head and thorax, as well as by the obsolete costse on the elytra, and its 

 generally small size. A single specimen from Yolos has the thorax less rugose and 

 slightly more shining, but differs in no other respect whatever. Except in the usual 

 dilatation of the tarsi in the male the sexes are not otherwise distinguished. 



7. Haltica forreri. 



Below black ; carina acute ; thorax black with a few fine punctures, the lateral groove abbreviated ; elytra 

 dark violaceous blue, finely punctate-striate, the apex impunctate. 



Length 1| line. 



Head impunctate at the vertex, transversely grooved between the eyes; the latter large; frontal tubercles 

 large and broad, occupying nearly the entire space between the eyes, limited behind by the transverse 

 groove and a row of punctures ; carina acutely raised, rather long and somewhat curved ; antennae half 

 the length of the body, black, third joint nearly twice as long as the second, fourth slightly longer than 

 the third ; thorax not much broader than long, the sides narrowed near the base and apex, the middle 

 rounded ; basilar groove deep, rather distantly placed from the posterior and not extending to the lateral 

 margin; surface with a few scarcely visible punctures near the anterior angles and below the basal 

 sulcation ; scutellum triangular, black ; elytra parallel, very dark blue, finely, closely, and rather regularly 

 punctate-striate, the punctuation invisible near the apex ; underside and legs black, covered with fine 

 greyish pubescence ; posterior first tarsal joint as long as the two following together. 



Edb. Mexico, Ventanas (Forrer). 



8. Haltica guatemalensis. 



Elongate, parallel; obscure greenish cupreous, subopaque; thorax extremely finely punctured; elytra very 

 minutely granulate, disk obsoletely punctured, sides with two distinct costae. 



Length 2|-3 lines. 



Head rugosely punctate between the eyes, the vertex impunctate; frontal tubercles strongly raised, semi- 

 quadrate, the carina short but acute ; antennae more than half the length of the body, bluish black, the 

 terminal joints black, the fourth joint slightly longer than the third ; thorax slightly broader than long, 

 the sides but little rounded at the middle, basal groove deep and not extending quite to the sides, surface 

 with an obsolete oblique depression at each side below the anterior margin, covered, as well as the space 

 behind the thoracic groove, with minute punctures ; elytra elongate and parallel, of a subopaque light 

 greenish or brownish cupreous colour, the entire surface minutely granulate, the sides with two distinct 

 and well-marked longitudinal costae, which do not join at their ends, and are preceded by one or two 

 other but very indistinctly marked costae, more strongly visible in the female than in the male insect, the 

 apex of each elytron broadly rounded. 



biol. cente.-amer., Coleopt., Vol. VI. Pt. 1, April 1884. 2 q 



