250 PHYTOPHAGA. 



that I cannot but consider them all specifically identical. In his diagnosis of D. princeps, 

 Stal describes the elytra as three-banded ; this is evidently a mistake, each elytron having 

 but two, transverse, narrow, undulated bands, which is also the case in a typical specimen 

 in the collection of Mr. Baly and named by Stal himself. These bands vary in width, 

 but are never very wide. The colour of the thorax is sometimes entirely fulvous without 

 any bands, at other times even entirely aeneous without any fulvous ; and the elytra are 

 either blue or green, finely or rugose-punctate ; so that scarcely two specimens are exactly 

 alike. The species has also a very wide geographical distribution. 



19. Doryphora diagonalis. (Tab. XV. fig. 13.) 



Doryphora diagonalis, Stal, Diagn. 1858, p. 256; Monogr. Chrys. Amer. p. 51 \ 

 Bab. Mexico \ Playa Vicente, Cordova (SallS), Misantla, Jalapa (Edge). 

 A dozen specimens were obtained by Herr Hoge. One of these is figured. 



20. Doryphora 8Bneo-ornata. (Tab. XV. fig. 12.) 



Doryphora ameo-ornata, Stal, Diagn. 1858, p. 471; Monogr. Chrys. Amer. p. 52 1 . 

 Bab. Mexico \ Cordova (Salle), Jalapa (Hoge). 



Very closely allied, in the design of the elytra, to the preceding species, but quite 

 distinct. In D. ameo-ornata the elytra are irregularly geminately punctate-striate, the 

 suture is never flavous at its anterior portion, as is constantly the case in D. diagonalis, 

 and the fulvous spot at the base is placed quite close to the scutellum. In the preceding 

 insect the elytra are regularly and simply punctate-striate. 



21. Doryphora decorata. (Tab. XIV. fig. ll.) 



Doryphora decorata, Jacoby, P. Z. S. 1878, p. 992. 



Hab. Costa Rica (coll Jacoby). 



Closely allied to B. nrirabilis, but at once distinguished from that species by the 

 geminately, not simply punctate-striate elytra and by their design, which consists of 

 a basal and apical large fulvous spot, two others behind the middle, and a transverse 

 band at the latter place. In the present insect the lateral margin from the base to the 

 middle is metallic green, and without the fulvous spot seen in B. mirabilis; the 

 species also much resembles B. vittaticollis, St. ; but the elytral pattern is different. In 

 the figure the apical spot is not indicated. Two specimens are contained in my 

 collection. 



22. Doryphora ornata. (Tab. XIV. fig. 9.) 



Doryphora ornata, Jacoby, P. Z. S. 1877, p. 516. 

 Hab. Nicaeagua, Chontales (Janson). 

 Amongst the transversely banded species the present one may be known by the 



