DIABEOTICA. 503 



Hab. Guatemala (coll. Baly) ; Panama, Volcan de Chiriqui, Bugaba (Champion). — 

 Colombia l 2 , Muzo 2 ; Guiana, Cayenne 2 . 



This is one of the largest species of Diabrotica ; it is rather variable in coloration, the 

 large elytral spots being as frequently of a pale green as of a fulvous colour, while the 

 narrow spaces dividing the spots vary from black to fulvous ; in certain varieties the 

 anterior spots disappear altogether. D. regalis has not been received by us from 

 Guatemala, but two specimens in the collection of Mr. Baly are so labelled. 



2. Diabrotica morosa. (Tab. xxvill. fig. 19.) 



Diabrotica fraterna, Baly, Ann. & Mag. Nat. Hist. 5th ser. iii. p. 79 (1879) \ 



Hab. Guatemala 1 (coll. Baly) ; Panama, Bugaba, Volcan de Chiriqui, Caldera, 

 David, Tole, San Feliz, Los Eemedios (Champion). 



The name D. fraterna having already been used by Mr. Baly for another species of 

 the same genus (cf. Ann. & Mag. Nat. Hist. 3rd ser. iv. p. 272), I am obliged to change 

 it. The female of D. morosa is very much larger than the male, nearly approaching 

 the preceding species in size, and is of a posteriorly dilated shape. There are no 

 varieties of importance before me ; in the male the antennae are but slightly shorter 

 than the body. D. alboplagiata, Jac, is exceedingly closely allied to this ; it is probably 

 only a variety of the present species, but differs in the femora being entirely flavous in 

 colour. 



3. Diabrotica panamensis. 



Fulvous ; head, the intermediate joints of the antennae, the breast, the tibiae and tarsi, black ; elytra obsoletely 

 punctured, black, each with three yellowish rounded spots placed one below the other. 



Length 3 lines. 



Head impunctate, with a distinct fovea, entirely black ; antennas more than half the length of the body, the 

 third joint one half longer than the second, the basal joint fulvous, the two following ones fulvous beneath 

 only, the intermediate joints fuscous or black, the three apical ones flavous, the extreme apex of the terminal 

 joint black ; thorax subquadrate, with two shallow foveas below the middle, the disc impunctate, flavous, 

 shining ; scutellum black ; elytra slightly dilated posteriorly, finely and irregularly punctured, black, each 

 with a round spot below the base, a larger one immediately below the middle, and a small one at the 

 extreme apex, yellowish- white. 



Hab. Panama, Volcan de Chiriqui (Champion). 



The number and position of the elytral spots separates D. panamensis from the 

 preceding species. It is also allied to D. deyrollei, Baly, but differs in the shape of the 

 spots and in the colour of the legs. 



4. Diabrotica pygidialis. (Tab. XXIX. fig. l, e .) 



Fulvous ; head and the intermediate joints of the antennae piceous ; thorax bifoveolate ; elytra distinctly 



punctured, black or piceous, a transverse spot before, another below the middle, and the apices, flavous. 

 c? . Antennae slightly longer than the body, the second and third joints very short. 

 2 • Antennas shorter than the body, the third joint one half longer than the second. 

 Length 2 lines. 



