554 PHYTOPHAGA. 



118. Diabrotica tetraspilota. 



Diabrotica tetraspilota, Baiy, Trans. Ent. Soc. Lond. 3rd ser. ii. p. 351 \ 



Eab. Mexico 1 , Misantla, Cerro de Plumas, Jalapa (Edge), Oaxaca, Cordova, Sante- 

 comapan (Salle) ; British Honduras, E. Hondo, R. Sarstoon (Blaneaneaux) ; Guate- 

 mala, Tamahu, Chacoj, Teleman, Panima in Vera Paz (Champion); Nicaragua, 

 Chontales (Janson) ; Costa Rica, Volcan de Irazu (Bogers). 



The fifty specimens of this large and easily recognizable species before me only differ 

 amongst themselves in the ground-colour of the elytra being either reddish-fulvous or 

 testaceous; each elytron being furnished with two large black spots. I am, however, 

 unable to detect any transverse sulcation below the base of which Mr. Baly speaks in 

 his diagnosis. The black colour of the terminal four joints of the antennae seems to 

 be a constant character. 



119. Diabrotica irregularis. (Tab. XXXII. fig. 21.) 



Fulvous, the head, the intermediate joints of the antennae, and the hreast black ; thorax without depressions ; 

 elytra finely and closely punctured, a transverse band at the base, another at and a third below the 

 middle, partly connected, as well as a lateral longitudinal stripe, black. 



Length 3-3^ lines. 



Head black ; clypeus with a strongly raised, rather broad, central ridge ; antennas with the basal joint fulvous, 

 the following seven joints obscure fuscous or piceous, the others fulvous, the extreme apex of the terminal 

 joint fuscous ; thorax scarcely one half broader than long, somewhat convex, the surface entirely impunc- 

 tate, without depressions ; scutellum black ; elytra with a narrow transverse black band (widened at the 

 sides) at the base, and a smaller black band at and another below the middle, the two latter joined in the 

 centre of the disc by a narrow stripe and at the sides connected with a longitudinal black stripe which 

 commences at the second band and is abbreviated at a little distance before the apex ; abdomen and legs 

 fulvous, the tibiae and tarsi black. 



Eab. Guatemala, Purula (Champion). 



In two specimens the elytral pattern is precisely similar, except that the markings in 

 one instead of being black are fulvo-piceous j but it is probable that this insect is 

 subject to variation in the shape of the elytral bands. 



120. Diabrotica bohemani. (Tab. XXXII. fig. 13.) 



Black, the apical joints of the antennae white ; thorax testaceous, obsoletely bi-impressed ; elytra subremotely 

 punctured, testaceous, a narrow transverse band at the base, the lateral and apical margins, and a trans- 

 verse spot below the middle, black. 



Length 3 lines. 



Eab. Panama (Boucard). 



"Whether the single specimen before me represents the normally-coloured form of 

 the present species or only a variety I am unable to say ; but it is very probable that 

 the design of the elytra is subject to variation. The antennae have the third joint 

 twice as long as the second; the apical four joints are yellowish-white, the apex of the 

 terminal one black. The thorax is one half broader than long, and has two obsolete 



