PLAGIODERA. 191 



tion. In P. ceneiventris the elytra, although rather closely punctured, still show traces 

 of arrangement in rows, and there are spaces between the latter distinctly visible ; in P. 

 maculatella, however, the punctuation is very close and irregular, without any interstices. 

 Great numbers of the present insect have been received from Capetillo. 



5. Plagiodera congesta. (Tab. IX. fig. 24.) 



Plagiodera congesta, St&l, Diagn. I860, p. 467; Monogr. Chrys. Amer. p. 305 \ 



Eab. Mexico \ Cordova, Toxpam, Jalapa (Salle, Edge) ; Guatemala, Sinanja (Cham- 

 pion). 



Only from one locality in Guatemala has this pretty little species been received. 

 The figure, which represents a specimen from Cordova, will give a better idea of the 

 elytral markings than any description. 



6. Plagiodera vitticollis. 



Subrotundate, convex, flavous ; the terminal joints of the antennae, two longitudinal bands of the thorax, the 

 suture, and four spots of the elytra black. 



Length 2 lines. 



Head with a distinct central groove, impunctate ; antennae slightly longer than the thorax, transverse from 

 the seventh joint, the five basal joints testaceous, their apex black ; thorax narrow, of equal width, the 

 sides straight, and narrowed towards the apex, surface closely and finely punctured, a small spot and 

 two narrow stripes from the base to the apex at each side black ; scutellum black ; elytra closely punctate- 

 striate, the suture, a spot at the shoulder, another near the scutellum, and two smaller and more obsolete 

 spots near the middle of each elytron black. Underside flavous ; sides of the breast, the margins of the 

 abdominal segments, as well as the coxae, knees, and tarsi black. 



Hal. Guatemala, Capetillo, Zapote (Champion). 



Five specimens of this distinct species were obtained in Guatemala. 



7. Plagiodera thymaloides. 



Plagiodera thymaloides, StaL, Diagn. I860, p. 468; Monogr. Chrys. Amer. p. 311 \ 



Hab. Mexico, Campeche, Tuxtla (Salle) 1 ; Beitish Honduras, river Sarstoon (Blan- 

 caneaux) ; Guatemala, Calderas (Champion). 



The type in the collection of Mr. Baly agrees very well with the few specimens from ; 

 Mexico ; but in those from the other localities the fulvous margin of the elytra is 

 wanting, but just indicated in the only specimen from Guatemala. The species is 

 fulvous below, as well as the head and thorax; the latter has an obscure eeneoiis 

 central spot ; and the elytra are of the same obscure aeneous colour. The Honduras 

 specimens show, besides the uniformly coloured elytra, some slight differences in the 

 punctuation of the latter, which is stronger, the interstices being at the same time 

 somewhat rugose ; but in general the specimens agree with the type, and, I believe, • 

 represent the species as a local variety. 



