(EDIONYCHIS. 429 



more transverse, with the sides more rounded and flattened; the head is entirely 

 testaceous, and the elytral bands are of a different shape; the basilar one often 

 includes a small testaceous spot, and is always cut oblique or angular near the 

 scutellum, where it leaves a narrow space of the ground-colour ; the posterior band is 

 pointed at each end, and extends a little distance along the sutural and lateral margins, 

 assuming a semicircular shape ; in (E. biarcuata this corresponding band turns inwards 

 again from the suture, and the space enclosed is divided by another longitudinal streak. 

 Eleven specimens, all agreeing in the above particulars. 



53. (Edionychis humeralis. 



Galleruca humeralis, Fabr. Syst. Eleuth. i. p. 494 1 ; Illiger, Mag. vi. p. ]01 2 . 

 Galleruca sellata, Fabr. Syst. Eleuth. i. p. 492; Illiger, Mag. vi. p. 102 3 . 

 (Edionychis 6-punctulata, Schauf. Nunq. Otios. ii. 1874, p. 295*. 



Ilab. Nicaragua, Chontales (Janson) ; Costa Kica, Cache (Rogers) ; Panama, Volcan 

 de Chiriqui, Eugaba, Caldera (Champion). — South America 1 4 2 3 . 



There does not seem to be any important difference between the Central American 

 specimens and others from South America contained in my own collection ; most of 

 those sent by Mr. Champion from Chiriqui have the usual two oblique basal spots and 

 a transverse narrow central black line ; in others this line is only indicated by another 

 small black spot until that also is absent in some forms ; in one variety there are no 

 spots whatever, and the entire insect is of a pale testaceous colour. 



54. (Edionychis imitans. 



Pale yellowish white ; the last seven joints of the antennae and the breast black ; elytra finely rugose and 



punctured, two small spots at the base (placed obliquely), and another below the middle, black. 

 Length 3 lines. 



Hab. Panama, Volcan de Chiriqui (Champion). 



Whether the single specimen before me represents a species distinct from (E. hume- 

 ralis or is only a variety I am unable to say. The black breast and antennae, of which 

 the four first joints only of the latter are testaceous, the rugosely punctured elytra, the 

 posterior spot of which is not placed at, but below the middle, and the whitish 

 semiopaque colour of the insect seem to me sufficient to render it specifically distinct, 

 although structurally it agrees with (E. humeralis. 



55. (Edionychis brevicornis. 



Ovate, fulvous ; base of the head black ; antennae submoniliform ; thorax impunctate, fulvous, or testaceous ; 



elytra finely but distinctly punctured, metallic blue or blackish, a transverse spot at and two others below 



the middle, and one at the apex of each elytron, testaceous or fulvous. 

 Var. The spots united in the shape of two transverse bands. 

 Length 2-2J lines. 



