562 PHYTOPHAGA. 



142. Diabrotica lsetabilis. 



Diabrotica latabilis, Baly, Journ. Linn. Soc, Zool. xix. p. 257 \ 



Testaceous, the apical joints of the antennae and the abdomen black ; vertex of the head greenish-aeneous ; 

 thorax bi-impressed, the sides with a black band ; elytra metallic green, finely punctured, the sides with 

 two costse. 



Length 1-1| line. 



Head impunctate, the vertex metallic green ; the frontal tubercles strongly raised, trigonate, testaceous like 

 the lower part of the face ; labrum piceous ; antennae two thirds the length of the body, the basal joints 

 more or less testaceous beneath, the others black, the third joint twice the length of the second ; thorax 

 transverse, distinctly narrowed at the base, the surface with two deep depressions, impunctate, the sides 

 with a narrow longitudinal black or piceous band ; scutellum broad, black ; elytra metallic green, minutely 

 granulate (when seen under a strong lens), finely but distinctly punctured towards the suture and much 

 more deeply and strongly so at the sides, a slightly curved costa extending along the sides from the 

 shoulder to below the middle, preceded within by a more indistinct one, the interspaces finely transversely 

 rugose ; legs testaceous, the abdomen black. 



Hab. Guatemala, Cerro Zunil (Champion) ; Panama, Volcan de Chiriqui (Champion). 

 — Colombia 1 . 



I have given a fresh description of D. Icetabilis, as there are several closely allied 

 species before me which are not easy to separate. The description given by the author 1 

 in regard to the shape of the thorax, ' more than half again as long as broad,' should 

 read the reverse. 



143. Diabrotica mystica. 



Black, the base of the antenna? and the legs testaceous, the vertex metallic green, the lower part of the head 

 and the thorax testaceous ; thorax with two depressions ; elytra metallic green, the base swollen, the disc 

 minutely punctured, the sides with two short costse, the disc with some stiff hairs. 



Length If line. 



Hab. Mexico, Cordova, Tuxtla (Salle); Guatemala, Sinanja, Chiacam, Cubilguitz 

 (Champion). 



Closely allied to D. Icetabilis, but differing in the following particulars :— The thorax 

 is devoid of the lateral piceous bands, and the elytra are more distinctly raised at the 

 base, the punctuation is finer (especially between the costse) and much more scattered, 

 and the interspaces are not transversely wrinkled. As all the specimens before me 

 agree with each other in the above particulars, 1 have no doubt they represent a distinct 

 species. 



144. Diabrotica semicaBrulea. 



Fulvous, the base of the head, the antennae, tibiae, tarsi, and abdomen piceous or black ; thorax with two deep 

 depressions ; elytra dark blue, finely punctured, the sides with two curved costae, the disc with some stiff 

 hairs. 



Length 1-1 \ line. 



Hab. Guatemala, Paraiso, San Isidro, Zapote (Champion). 

 , This insect is closely allied to D. mystica and B. Icetabilis. From the former it differs 



