LEPTINOTAESA. 239 



Since this species was described by me, a number of others have been received from 

 Guatemala. On account of the distinctly channelled tibiae, I think the insect had 

 better be placed in Leptinotarsa. The other characters agree with Calligrapha and 

 Stilodes, with the latter genus in the partially punctate-striate elytra and the compa- 

 rative length of the joints of the maxillary palpi. The figure, from a Chontales 

 specimen, shows the posterior black spot of the elytra separated from the transverse 

 band ; in many specimens these are united, and form a crescent-shaped mark, open at 

 its outer portion. Others, again, are entirely fulvous, or have the thorax and the 

 underside greenish aeneous, while in a few the black spots of the elytra are either 

 entirely absent or indicated only by obscure fulvous. 



33. Leptinotarsa tlascalana. 



Leptinotarsa tlascalana, Stal, Diagn. 1858, p. 476; Monogr. Chrys. Amer. p. 158 \ 



Hob. Mexico l . 



I am not acquainted with this species, which in its design seems closely allied to 

 L. dahlbomi. 



34. Leptinotarsa dohrni. (Tab. XV. fig. 4.) 



Below metallic greenish aeneous ; antennae, the apex of the tibiae, and the tarsi fulvous ; head and thorax 

 obscure cupreous, remotely punctured ; elytra testaceous, geminately punctate-striate, covered with numerous 

 smaller and larger blackish spots. 



Length 4| lines. 



Head very finely punctured ; labrum obscure fulvous ; palpi and antennae fulvous, the latter long, extending 

 nearly to the middle of the body, the terminal joints gradually but very slightly thickened and much, 

 longer than broad. Thorax transverse, the sides much rounded from the base to above the middle, from 

 there to the anterior angles obliquely cut, the latter acute but not prominent ; surface rather remotely and 

 very irregularly punctured, the punctures stronger than those on the head, but not more deeply impressed 

 at the sides than on the disk ; the latter irregularly depressed or flattened near the sides, cupreous, very 

 narrowly margined with metallic green ; scutellum of the same colour, broadly triangular, impunctate. 

 Elytra very convex, slightly narrowed from the middle to the apex, somewhat irregularly but distinctly 

 geminately punctate-striate throughout, of a dirty testaceous colour, with about ten rows of small blackish 

 aeneous round spots, placed more regularly near the sutural and lateral margins, and interrupted near the 

 base and at the middle by larger confluent spots of the same colour, of which the largest is placed near 

 the suture below the middle, at the sides of which a narrow oblique streak is placed, the outer end of 

 which is thickened ; the suture is also spotted from the base to nearly the middle with obscure aeneous, 

 the same colour occupying the interior of all the impressed punctures. The apex of the tibiae, and 

 the tarsi entirely, are fulvous ; the former are obsoletely channelled ; claws' distant. 



Hab. Mexico, Yolotepec (Salle). 



Of this curiously marked species, which exhibits all the characters of a true Leptino- 

 tarsa, only a single specimen is before me ; it is very probable that the pattern of the 

 elytra is subject to variation. I know of no species with which to compare it. 



