54 Annals of the Carnegie Museum. 



collector's number "2118" (H. H. Smith). I would suggest the name 

 Coryacris conspersipennis as suitable ior it. 



(anus ELAEOCHLORA Stal. 

 Elaochlora Stal, CEfv. Vet. Akad. Forh., XXX, no. 4, p. 52 (1873). 



The genus Elaochlora Stal is composed of a dozen or more species 

 of rather large and showy locusts. All of the known forms are South 

 American, and most of them tropical in their distribution. Possibly 

 a few of the described species will eventually be placed in other genera. 

 In fact, quite recently Mr. James A. G. Rehn has redescribed the E. 

 angustipennis Bruner under the name Coryacris diver si pes, as will be 

 seen by reference to the next to the last of preceding forms mentioned 

 in the present paper. 



There are two or three distinct types of structure observable among 

 the species of this genus, and it was the intention of the writer to 

 construct a synoptical key for their separation. The lack of several 

 of them for comparisons, together with the press of other duties, has, 

 however, made it necessary to defer this action for the present. 



76. Elaeochlora trilineata (Serville). 

 Xiphicera trilineata Serville, Ann. Sci. Nat., XXII, p. 272 (1831). 

 Xiphoccra trilineata, Burmeister, Handb. Ent., II, p. 614 (1838). 

 Elaochlora trilineata Stal, Recens. Orthopt., I, p. 46 (1873). 



Habitat. — If I have rightly determined this insect, there is a speci- 

 men at hand from Rio de Janeiro, Brazil, where it was taken during 

 the month of December by H. H. Smith. 



77. Elaeochlora viridicata (Serville). 

 Xiphicera viridicata Serville, Ins. Orthopt., p. 614, pi. 14, fig. 3 (1839). 

 Elaochlora viridicata Stal, Recens. Orthopt., I, p. 46 (1873). 



Habitat. — Chapada, Brazil, during the months of December, 

 January, and April (H. H. Smith). 



78. Elaeochlora pulchella Rehn. 

 Elaochlora pulchella Rehn, Proc. U. S. Nat. Mus., XXXVI, pp. 126-128, figs. 13, 

 14 (1909). 

 Habitat. — Corumba, Brazil, during March and April (H. H. Smith). 



79. Elaeochlora humilis Rehn. 

 Elaochlora humilis Rehn, Proc. U. S. Nat. Mus., XXXVI, pp. 124-126, figs. 11, 

 12 (1909)- 



