558 PHYTOPHAGA. 



spots placed transversely below the base, and two others below the middle, black; the first joint of the 

 posterior tarsi as long as the following three joints united ; claws bifid, the inner division rather short. 



Hah. Guatemala, Capetillo, Duenas (Champion). 



131. Diabrotica sexpunctata. (Tab. XXX. fig. 19.) 



Diabrotica sexpunctata, Jac. P. Z. S. 1878, p. 148 1 . 



Hah. Costa Eica (Van Patten), Eio Sucio, Cache, Volcan de Irazu 1 (Bogers) ; Panama, 

 Volcan de Chiriqui (Champion). 



This species may be recognized by its large size ; and by the elytra being reddish- 

 fulvous in colour, and each with three small black spots ; the antennae and legs are 

 flavous, and the underside black. In the original description 1 D. sexpunctata was 

 compared with D. tripunctata, Oliv., by mistake ; it should have been with Aulacophora 

 tripunctata, an insect somewhat resembling D. sexpunctata in coloration. 



132. Diabrotica octo-signata. (Tab. XXX. fig. 23, var.j 



Diabrotica octosignata, Baly, Ann. & Mag. Nat. Hist. 5th ser. iii. p. 76 (1879 J ). 



Var. Elytra with the suture, two spots at the base, and a transverse band below the middle, black. 



Hah. Mexico, Oaxaca \ Cordova, Juquila, Guanajuato (Salle) ; Guatemala (Salle), 

 Duenas, Cerro Zunil, Panima, Sinanja (Champion). 



Although at first sight the variety seems to represent another species, I am unable to 

 find sufficient differences to treat it as such. In the type, the elytra are fulvous, with 

 four small black spots placed transversely before and below the middle on each. In 

 the variety these spots are larger, sometimes connected and with the posterior ones 

 united into a more or less broad transverse band, the position of these spots and of the 

 band being as in the type, and the suture from below the base to the apex also 

 narrowly black; a specimen marked in this way, but otherwise agreeing with the 

 typical form, is also before me, thus proving the variability of the species. The thorax 

 and the elytra in the variety are rather more strongly punctured ; but other differences 

 seem to be absent. 



A specimen in the Salle collection is labelled H. ^-punctata, Sturm. We figure a 

 specimen of the variety from Cerro Zunil. 



g. Elytra fulvous or testaceous. 



133. Diabrotica subimpressa. 



Ovate, dilated, black; thorax fulvous, deeply bifoveolate ; scutellum piceous; elytra flavous, finely punctured, 

 transversely impressed at and below the middle, each with an elongate elevation near the apex; legs 

 flavous. 



Length 4| lines. 



Head longer than broad, black, the vertex with a deep triangular depression, the clypeus with a central ridge; 

 palpi flavous ; antennse fulvous (the terminal five joints wanting), the third joint more than twice the 



