46 Annals of the Carnegie Museum. 



piceous, dull brown, and testaceous. Lateral margins of fastigium 

 together with upper antennal foveae piceous to glossy black imme- 

 diately in advance of the eyes. Ocelli amber-yellow; the eyes ochra- 

 ceous. Lateral carinae of male faintly embrowned, as are the upper 

 edges of the hind femora and the tibiae. Tibial spines pallid at base, 

 the apical portion black. Antennae greenish basally, becoming some- 

 what infuscated apically, most pronouncedly so in the male. 



Length of body, o 71 , 32 mm., 9, 45 mm.; of pronotum, o 71 , 16.5 

 mm., 9, 22.5 mm.; of tegmina, cf, 8 mm., 9, 10 mm.; of hind 

 femora, o 71 , iS mm., 9, 22.5 mm. 



Habitat. — Chapada, near Matto Grosso, Brazil, May (H. H. Smith). 

 The types are contained in the collection of the Carnegie Museum. 



Two additional specimens (o 71 and 9 ) are at hand. They come 

 from the same locality. These are uniformly dark wood-brown instead 

 of green. The male was taken during March, the female in August. 



64. Alcamenes brevipennis (Giglio-Tos)? 



Prionolopha brevipennis Giglio-Tos, Boll. Mus. Zool. Anat. Torino, XV, no. 377, 

 p. 4 (1900). 



Among the material at hand is a single female specimen of another 

 species of Alcamenes which is very doubtfully referred to Prionolopha 

 brevipennis Giglio-Tos. The description published by the author of that 

 species is so brief as not to be at all characteristic and could be applied 

 to one of several species of Alcamenes. His insects were undoubtedly 

 green or greenish, varied with fuscous and black on the head and 

 pronotum. The specimen at hand is dark brunneo-ferruginous 

 with a black bordered pronotal crest and a pallid dorsal edge on the 

 closed tegmina, which latter also exhibit traces on the disk of dull 

 fuscous mottlings. The hind femora are rather robust, the carinae 

 quite strongly spined and the upper lateral apices prominently toothed. 

 In size this specimen agrees fairly well with the measurements of 

 Giglio-Tos so far as the pronotum, length of the tegmina and of the 

 hind femora are concerned, but, instead of measuring 55 mm. in length, 

 as mentioned by him, this one is fully 70 mm. long. 



Habitat. — This insect comes from Corumba, Brazil, where it 

 was taken during the month of March (H. H. Smith). It is the 

 property of the Carnegie Museum. 



Should this insect prove to be distinct from brevipennis Giglio-Tos 

 it may be known as Alcamenes marginipennis. 



