328 PHYTOPHAGA. 



also described by Suffrian in his Cuban insects ; but this species is also aeneous and not 

 black in colour ; it is, however, quite possible that the present is but a variety of the 

 latter insect or even of S. pectoralis, Clark. Numerous specimens from different 

 localities are absolutely necessary to come to a conclusive opinion in regard to these 

 closely allied forms. 



13. Systena chloropus. (Tab. XIX. fig. 14.) 



Systena chloropus, Harold, Coleopt. Hefte, xv. p. 12 (1876) \ 



Had. Costa Rica, Volcan de Irazu (Rogers) ; Panama, Volcan de Chiriqui (Cham- 

 pion). — Colombia x . 



The description of this species agrees so well with the two specimens from the 

 above localities that I must refer them to Von Harold's insect ; this author remarks 

 that the species is a very variable one, and the specimens before me seem to represent 

 one of the varieties with transverse yellow bands ; one of them (from Panama) is 

 larger than the other, the thorax dark fulvous, the head and elytral bands are black, 

 the latter extend to the margins, and the first two are connected at the suture and 

 lateral margin ; the specimen from Costa Rica has a flavous thorax and olive-green 

 legs, and the elytral flavous bands are narrow and more regular, and do not extend to 

 either margin. 



14. Systena ustulata. (Tab. XX. figs. 17, 18.) 



Systena ustulata, Harold, Coleopt. Hefte, xiv. p. 31 (1875) \ 



Hab. Guatemala, Chiacam, Tamahu, San Juan in Vera Paz (Champion) ; Nicaragua, 

 Chontales (Janson); Panama, David, Volcan de Chiriqui (Champion).— Colombia 1 . 



Of this small species I possess a typical specimen, kindly given to me by M. Oberthur, 

 with which those from Panama entirely agree. The specimens obtained from Guate- 

 mala and Nicaragua differ in having the elytra with a narrow lateral and sutural 

 piceous margin, which colour does not widen at the apex as in the type ; Von Harold 

 says, however, that the species is very variable in colour, and as the elytra in all the 

 specimens agree in the very obsolete punctuation, and I cannot find any other 

 marks of distinction, I think I am right in referring all the insects to S. ustulata. 

 In this species the first joint of the posterior tarsi is longer than usual, the thorax 

 is also more transverse and convex, and altogether the shape is not that of a typical 

 Systena. 



15. Systena metallica. (Tab. XX. fig. 13.) 



Black; thorax subquadrate, closely punctured; elytra metallic green, closely and strongly punctured, the 



punctures arranged in irregular rows. 

 Yar. a. Three basal joints of the antennae fulvous. 

 Var. b. Elytra cupreous. 

 Length l|-lf line. 



