228 PHYTOPHAGA. 



transversely. Only a single specimen (which is figured) is contained in the Salle 

 collection, two others in that of Mr. Baly. The species seems to be a rare one. 



3. Leptinotarsa lacerata. (Tab. XIII. fig. 10.) 



Leptinotarsa lacerata, Stal, Diagn. 1858, p. 476 ; Monogr. Chrys. Amer. p. 157 % 

 Myocoryna hbpfneri, Dej. Cat. 3rd ed. p. 421 . 



Hal. Mexico 1 \ Oaxaca, Playa Vicente (ffige), Peras, La Parada, Etla (Salle). 



A large and handsome species, apparently not uncommon in Mexico, and easily 

 distinguished by the three deeply dentate black transverse bands on each elytron, if 

 the flavous is taken for the ground-colour. 



4. Leptinotarsa heydeni. (Tab. XIII. fig. 11.)' 



Leptinotarsa heydeni, Stal, Diagn. 1858, p. 475; Monogr. Chrys. Amer. p. 158 ^ Hopfner, Dej. 

 Cat. 3rded. p. 421 2 . 

 Hab. Mexico 2 , Almolonga (Edge), Tanetza (SalU).— Beazil (X) K 



This species is as large as the preceding one, and distinguished by the six flavous 

 large spots on each elytron, of which the middle one near the suture is sometimes 

 confluent with the elongate spot near the lateral margin, thus forming a transverse 

 dentate band. The dark ground-colour in the present insect is never black, as in 

 L. lacerata, but always either bluish violet or green. Stal gives the Brazils as the 

 « habitat ;" but this is, without doubt, a mistake, all the specimens which have come 

 under my observation having been obtained in Mexico ; Chapuis makes the same 

 observation. 



5. Leptinotarsa pnncticollis. (Tab. xill. fig. 12.) 



Ovate, purplish or blackish ameous below; above dark greenish or purplish blue; head and thorax extremely 

 closely punctured ; elytra very closely and rather strongly punctured, the interstices somewhat raised and 

 smooth ; each elytron with four subsutural small spots and two elongate lateral stripes flavous. 



Length 7-8 lines. . . . 



Head closely covered with somewhat elongate punctures near the base and the sides ; labrum and palpi black ; 

 antenna extending below the base of the thorax, the basal five joints bluish black, shining, the rest 

 opaque, pubescent, and a little longer than broad. Thorax of the same shape as L. heydem, extremely 

 closely covered with larger and smaller punctures, those at the sides scarcely larger than at the disk; 

 scuteUum very finely punctured at the base; elytra very convex, slightly widened towards the middle, 

 punctured as in the preceding species, and with the interstices slightly raised and smooth, each elytron 

 with a narrow elongate band from the base to the middle near the lateral margin, and a shorter stripe at 

 the same place below the middle, flavous; four small spots, of which the second one is of a more trans- 

 verse shape than the others, and of the same colour as the lateral stripes, run parallel with the suture in 

 exactly the same position as in L. heydeni. Legs and underside as in that species. 



Hob, Mexico, Sonora (coll. Jacoby, Baly), Ventanas (Forrer). 



At first sight I was inclined to regard this species as a local variety of L. heydeni, in 

 which the elytral spots have been reduced to a much smaller size. I have, however, 



