296 PHITOPHAGA. 



The specific value of this species in regard to H.jamaicenm is not well established 

 tee t. Harold, Stett. Zeit. I. c). As the colonr of all my numerous specimens agrees 

 with that given by Olivier, and the locality also with the one mentioned by Harold, I 

 have referred these specimens to H. amethystina. The space below the thoracm groove 

 is extremely finely, sometimes indistinctly, punctured, in which respect the insect agrees 

 also with the description given by von Harold. The figured specimen „ from Guatemala 

 from the Salle collection. 



4. Haltica bimarginata. 



Altica bimarginata, Say, Journ. Ac. Phil. iv. 1824, p. 85 \ 

 Haltica ambiens, Leconte, Col. of Kansas, 1859, p. 25 2 . 

 Graptodera carinata, Sturm, Cat. 1843, p. 282 . 

 Graptodera -plicipennis, Mannerh. Bull. Mosc. 1843, li. p. 310 . 

 Haltica prasina, Lee. Rep. Surv. Pacif. 1857, p. 67 5 . 



Hab. Noeth America 1 2 3 4 5 .— Mexico (coll Salle, Jacoby, Bah), Jalapa (Edge) ; 

 Guatemala (coll. Jacoby). 



Although I have no North-American specimens to compare, and the locality of this 

 species has up till now been recorded as North- American, the Central-American 

 specimens before me agree well enough with the descriptions of the above authors to 

 identify them. A well-marked characteristic which both males and females possess is 

 the strongly developed lateral costa of the elytra, which curves round towards the suture 

 near the apex. The species is much smaller than H. complicata. 



5. Haltica mexicana. (Tab. xvil. fig. 13.) 



Convex, narrowed behind; dark violaceous blue, shining; thorax impunctate; elytra with strong basal 

 elevation, nearly impunctate. 



Head impunctate • frontal tubercles very distinct and well limited ; carina short and rather flattened ; antenna 

 slender more than half the length of the body, bluish black, closely and finely pubescent, the basal joint 

 more metallic blue, the fourth joint very slightly longer than the third ; thorax very nearly square-shaped, 

 scarcely broader than long, the lateral margin rounded in front, nearly straight at the base, the basal 

 sulcation very distinct, sinuate, and of usual shape, the space in front and behind it impunctate or scarcely 

 visibly punctured ; elytra convex, narrowed, and pointed towards the apex, the latter, however, rounded 

 and not produced, the base strongly raised and depressed below this elevation, the shoulders prominent; 

 legs covered with thin greyish pubescence, the first joint of the tarsi very elongate. 



Hab. Mexico, Cuernavaca (Sa\ 



Of this species six specimens are before me. From those in which the elytra are 

 entirely devoid of costee the present species differs in its convex and posteriorly narrowed 

 shape, and in the almost total absence of any punctuation on the upper surface. In 

 some specimens, which may be of the female sex, there is an extremely fine punctuation 

 visible when seen under a strong lens, but in all others the elytra are impunctate. 

 Another structural character may be found in the elongate and slender first joint of 

 the tarsi. 



