520 PHYTOPHAGA. 



black ; thorax impunctate, with two deep depressions ; scutellum fulvous ; elytra widened posteriorly, 

 extremely closely and finely punctured, testaceous, with a short and narrow stripe at the shoulders, 

 another of similar length (but pointed) at the base surrounding the scutellum and occupying the sutural 

 margin, and two very small obliquely-placed spots on each below the middle, black. 



Hah. Panama, Bugaba, Volcan de Chiriqui {Champion). 



This and several of the following species are very closely allied, and seem to be 

 separable only by slight, though evidently constant, differences. D. dysoni, Baly, differs 

 in having the head black. 



41. Diabrotica Mvicornis. (Tab. XXX. fig. 2.) 



Head and the breast black, the antennae and thorax fulvous ; thorax obsoletely trifoveolate ; elytra testaceous, 

 very closely punctured, an elongate spot at the shoulder, a smaller one surrounding the scutellum, and a 

 still smaller one near the middle as well as two elongate spots beyond, black. 



Length 3 lines. 



Head impunctate, black, the frontal tubercles distinctly raised ; antennae two thirds the length of the body, 

 entirely fulvous, the second and third joints very short, equal, the fourth slightly longer than the fifth 

 joint ; thorax about one half broader than long, the sides slightly constricted at the base, rounded in front, 

 the surface with some fine punctures, more or less distinctly bifoveolate on the middle of the disc, and with 

 another smaller fovea near the base ; scutellum fulvous ; elytra very closely and finely punctured, the 

 sides with a longitudinal sulcation extending from a little below the shoulders to the middle, a small 

 triangular spot at the base surrounding the scutellum, a more elongate one at the shoulders, a very minute 

 spot between these but lower down and near the middle, and two others of elongate shape below the 

 middle (the outer one slightly lower and in a line with the humeral spot, the inner one below the small 

 spot near the middle), black ; abdomen and the legs fulvous, the breast black. 



Hah. Panama, Volcan de Chiriqui (Champion). 



The short second and third joints of the antennae, the shape of the scutellar spot 

 (this spot scarcely extending below the scutellum), the finely-punctured thorax, and 

 the generally shorter and somewhat dilated shape separate D.fulvicomis from several 

 similarly-marked species. 



42. Diabrotica palpalis. 



Fulvous, the head and breast black ; antennae fulvous ; thorax obsoletely depressed ; elytra minutely punctured, 

 testaceous, a spot at the shoulders, another one near the middle, two below the middle, and the suture 

 anteriorly, dark blue. 



$ . Antennae with short and robust joints ; palpi strongly incrassate. 



5 . Antennae and palpi of normal structure. 



Length 3^-4 lines. 



Hob. Panama, Volcan de Chiriqui (Champion). 



There will be no difficulty in separating the male of D. palpalis from the same sex 

 of D. fulvicornis and other similarly-coloured species, on account of the strongly dilated 

 palpi and the peculiar structure of the antennae ; these latter organs having the joints 

 stout and proportionately short, the base of each joint being, on the contrary, very thin, 

 and the second and third joints short, equal, and stout. The specimens which 1 look 



