516 PHYTOPHAGA. 



f. Elytra black or blue, withflavous markings of variable shape. 



81. Diabrotica militaris. (Tab. XXVIII. fig. 23.) 



Fulvous, the head, the lower joints of the antennae, and the breast black ; thorax deeply impressed ; elytra 

 finely punctured, metallic blue, with two small basal spots, a narrow transverse central band, and the 

 apices flavous. 



Length 3 lines. 



Head with a deep fovea between the antennae, black ; antennas two thirds the length of the body, the third 

 joint longer than the second but much shorter than the fourth, the first joint more or less fulvous, the 

 seven following joints black or piceous, the rest flavous, the extreme apex of the terminal joint piceous; 

 thorax subquadrate, impunctate, the disc strongly depressed and with two more or less distinct foveae ; 

 scutellum piceous ; elytra scarcely widened behind, finely and closely punctured, with an obsolete longi- 

 tudinal sulcation below the shoulder, dark metallic blue, the extreme lateral margins, a narrow straight 

 band across the middle, and the apices as well as a small spot below the base of each, flavous ; the breast 

 black, the abdomen and the legs entirely fulvous or flavous. 



Hab. Guatemala, Panima, Chacoj and San Juan in Vera Paz (Champion). 



The flavous apex of each elytron may be described as of the shape of a more or less 

 quadrate spot interrupting the metallic blue colour. The Panima example is figured. 



32. Diabrotica quadricoUis. (Tab. xxx. fig. 20.) 



Fulvous, the head, breast, tibiae, and tarsi black ; thorax quadrate, without foveae ; elytra black, a small spot 

 below the base, a transverse spot in the centre, the suture in the middle, and a subquadrate space at the 

 apices flavous. 



Length 3| lines. 



Head black, with a deep fovea on the vertex, the carina very acute and distinct ; antennae more than two 

 thirds the length of the body, the second and third joints very small, the three lower joints flavous, the five 

 following ones black, the ninth and tenth joints flavous, the terminal one black ; thorax perfectly quadrate, 

 fulvous, with a slight bluish tint, the surface not visibly punctured, without depressions, and rather flat ; 

 scutellum black ; elytra finely and closely punctured, with a longitudinal depression at the sides, black, a 

 subquadrate space at the apices, a small spot below the base, a transverse spot in the centre, a lozenge- 

 shaped spot in the middle of the suture, and the extreme lateral margins, flavous. 



Hab. Guatemala, Cubilguitz in Vera Paz 1000 feet (Champion). 



I cannot refer the single specimen obtained to a variety of any of the preceding 

 species, on account of the quadrate thorax in connection with the black colour of the 

 elytra; the spots on the latter are placed somewhat as in D. militaris, in which, 

 however, the elytra are of a blue colour and the flavous markings at the apices 

 differently shaped. 



33. Diabrotica tripunctata. (Tab. XXIX. fig. 24.) 



Crioceris tripunctata, Fabr. Syst. Eleuth. i. p. 451 \ 

 Galeruca tripunctata, Oliv. Ent. vi. p. 652, t. 4. f. 66 2 . 



Hab. Nicakagua, Chontales (Janson). — South Ameeica \ Cayenne 2 . 



The only difference I am able to find between the published descriptions of this 

 species and specimens obtained in Nicaragua is the colour of the elytra : in our insect 



