CATALOGUE OF 



6. ACRIDIUM RUBIGINOSUM. 



, Harris, MSS. Scudder, Journ. Bost. Soc. Nat. Hist. 1862, 

 467. 



United States. 



7. ACRIDIUM OLIVACEUM. 

 olivaeeum, Serv. Hist. Orth. 66. 



North America. Cuba. 



Mexico. 



8. ACRIDIUM TOLTECUM. 

 Toltecum, Sauss. Rev. Zool. 1861, 163. 



The nearly contiguous eyes and the narrower prothorax in proportion 

 to the head distinguish this species from the Mexican Acridia here 

 described. 



Mexico. 



9. ACRIDIUM PICEIFBONS. 



Mas. Luteum ; caput et prothorax vitlis duabus ferrugineis nigro 

 marginatis ; caput strigis duabus lateralibus nigricantibus lanceolatis, 

 vertice antico depresso subhexagonali, fronte facieque piceis ; pro- 

 thorax plagis duabus magnis nigricantibus luteo unimaculatis, 

 margine postico producto rotundato ; prosterni spina pallide flava, sat 

 gracilis ; pedes rufi, spinis albis apice nigris ; alee anticte cinerete, 

 corpore longiores, maculis plurimis obscurioribus nigro-venosis ; al<B 

 posticce pallide cinerece, nigro venosas. 



Male. Luteous. Head and prothorax with two ferruginous black- 

 bordered stripes. Head smooth ; fore part of the vertex depressed, sub- 

 hexagonal ; a blackish lanceolate streak extending from each eye to the 

 mouth ; front and face mostly piceous, thinly punctured -, } front with four 

 well-defined keels, the inner pair most approximate in the middle, the 

 outer pair diverging towards the face. Eyes elliptical. Prothorax finely 

 scabrous, with an extremely slight dorsal keel and with the usual four 

 transverse impressed lines ; a large blackish patch on each side including 

 an irregular spot of the ground bue; fore border and sides slightly 

 rounded ; hind border elongated, rounded. Prosternal spine pale yellow, 

 rather slender. Legs red. Hind femora as long as the abdomen, longer 

 than the hind tibiae ; spines of the latter white, with black tips. Fore wings 

 cinereous, longer than the body, with many darker black-veined spots ; 

 veins elsewhere whitish. Hind wings pale cinereous; veins black. Length 

 of the body 22 lines; expansion of the fore wings 48 lines, 

 a. Orizaba. From M. Salle's collection. 



