DIABEOTICA. 



535 



Izucar, Cerro de Plumas, Acapulco (Hoge); Beitish Hondukas, K. Hondo (Plan- 

 caneaux) ; Guatemala, El Tumbador, Zapote, San Geronimo, Purula, Tamahu, Chacoj, 

 Cubilguitz, Chiacam (Champion); Nicakagua, Chontales (Janson); Costa Rica (Van 

 Patten), Irazu (Rogers); Panama, Bugaba, Volcan de Chiriqui, Caldera (Champion). — 

 Colombia 1 ; Guiana, Cayenne 1 ; Ecuadoe *• ; Beazil, Bahia * ; West Indian Islands K 



A comparison of specimens of D. theimei, kindly given to me by Mr. Baly, with the 

 Central-American insect proves the identity of the latter with this species. The broad 

 raised yellow costa (this costa alone being broader than the others) principally sepa- 

 rates D. theimei from D. Tcirschi ; but the head is as frequently black as testaceous, and 

 its colour cannot be used as a distinctive character. In most specimens the antennae 

 have the eighth and ninth joints, as well as the three or five basal ones, pale. A certain 

 number of examples show the following differences from the type : the flavous subsutural 

 elytral vitta broader and narrowly costate at its outer edge only, and the sides of the 

 elytra either entirely without costse and strongly punctured only, or furnished with 

 curved (not straight) costee ; between this and the typical form some intermediate 

 degrees of sculpturing occur, although it is possible that these specimens may represent 

 another closely allied species. 



74. Diabrotica obscuro-fasciata. 



Pale testaceous ; thorax deeply bifoveolate ; elytra each with eight narrow longitudinal costse, the first, fifth, 

 and seventh of these obscure fuscous. 



Length 3 lines. 



Head impunctate, the vertex sometimes with an obscure fuscous spot ; antennae about two thirds the length of 



/ the body, pale testaceous, the third joint twice the length of the second; thorax subquadrate, one half 

 broader than long, the surface impunctate but with two deep foveae ; elytra with single rows of deep punc- 

 tures between the costse, the latter of equal width and placed at regular intervals, the first or subsutural 

 and the fifth and seventh fuscous, the two latter abbreviated before the apex. 



Hah. Mexico, Yolos, La Parada (SalU). 



It will not be difficult to separate D. obscuro-fasciata from D. fairmairei and the 

 allied species, on account of the colour and equal width of the costse. This insect 

 is entirely pale testaceous, with the exception of the three darker costa? on each 

 elytron. 



75. Diabrotica vittata. (Tab. xxxi. fig. 5.) 



Crioceris vittata, Fabr. Syst. Ent. p. 122 (1775) \ 

 Galeruca vittata, Oliv. Ent. vi. p. 633, t. 3. fig. 38 2 . 

 Diabrotica vittata, Lee. Proe. Ac. Phil. 1865, p. 213 3 . 



Hab. Noeth Amekica 1 2 3 . — Mexico, Northern Sonora (Morrison), San Luis Potosi, 

 Monclova in Coahuila (Dr. Palmer), Cordova, Vera Cruz, Yolos, Guanajuato, La Parada 

 (Salle), Aguas Calientes city, Villa Lerdo in Durango, Irapuato, Matamoros Izucar^ 

 Chilpancingo, Jalapa, Acapulco (Edge) ; Guatemala, near the city, Capetillo, Duenas, 



