DIABEOTICA. 



527 



Hacienda de Bleados, San Luis Potosi (Pr. Palmer), Colima city, Irapuato, Tacambaro, 

 Matamoros Izucar, Jalapa, Tapachula (Edge), Cordova, Oaxaca, Puebla, Cuernavaca, 

 Guanajuato (Salle); British Honduras, K. Sarstoon (Blancaneaux) ; Guatemala (Salle), 

 near the city (Salvin), Cerro Zunil, Panajachel, Volcan de Agua, Capetillo, Dueiias 

 Santa Eosa, San Geronimo (Champion) ; Nicaragua, Chontales (Janson); Costa Rica 3 

 (Van Patten), Volcan de Irazu, Eio Sucio, Cache (Bogers) ; Panama, Bugaba, Volcan 

 de Chiriqui (Champion). 



P. porracea seems to be one of the commonest and most widely distributed species 

 of the genus in Central America ; it is also a very variable one. The absence of 

 intermediately marked specimens induced me to describe P. costatipennis as a distinct 

 species: our additional material, however, proves P. costatipennis to be a pale 

 unicolorous flavous" variety of P. porracea. In the typical form the elytra are green, 

 and have a broad longitudinal band of flavous throughout their entire length ; this 

 band is often interrupted in the middle (thus forming two elongate spots), and 

 frequently disappears altogether (P. costatipennis). In all the forms, however, there 

 are three or four feeble, closely placed, subcarinate costse on each elytron ; and a more 

 distinct and straight costa commencing at the shoulder and extending nearly to the 

 apex. The legs and antennse are sometimes nearly black ; in the normal forms the 

 legs are green and the tibiae fulvous. 



We figure a typical specimen (Tab. XXIX. fig. 17) from Cordova, and a variety 

 (Tab. XXIX. fig. 18) from Santa Rosa. 



58. Diabrotica sex-maculata. (Tab. XXIX. fig. 16.) 



Diabrotica sexmaculata, Baly, Ann. & Mag. Nat. Hist. 5th ser. iii. p. 81 (1878) \ 



Bab. Mexico, Tuxtla, Yolotepec (Salle), Jalapa, Cordova, Zacualtipan (Hbge); 

 Guatemala 1 , Tamahu, Chiacam (Champion). 



In this species the disc of each elytron is occupied by three large patches of pale 

 fulvous (the intermediate one being of the shape of a slightly curved transverse band) 

 separated by narrow bands of green. The head in all the specimens before me is 

 green, the labrum fulvous. 



59. Diabrotica variegata. (Tab. XXXI. fig. 2.) 



Flavous, the head, breast, tibise, and tarsi black; thorax dark fulvous, without fovese ; elytra green, the 

 shoulders and the suture anteriorly, a transverse band near the middle (connected with the basal markings), 

 and a curved transverse band below the middle, piceous. 



Head black^impunctate ; antennae nearly as long as the body, the second and third joints very short, the three 

 basal joints green, the following joints fuscous, the apical ones obscure fulvous ; thorax dark fulvous, sub- 

 quadrate, without any depressions or punctures ; scutellum piceous; elytra finely and closely punctured, 

 pale green, with a ring-shaped basal mark connected posteriorly with a transverse band (not extending to 

 the lateral' margin), and another transverse dentate band before the apices, piceous ; abdomen pale flavous j 

 femora green, the tibise, tarsi, and breast black. 



