384 Annals of the Carnegie Museum. 



colored and lack much of the testaceous maculation of that species. 

 The ovipositor is shorter and the wings somewhat less caudate. 



Length of body, cf and 9, 14 mm.; of pronotum, d^ , 2.25 mm., 

 9 , 2.50 mm., width, 4.5 mm.; length of tegmina, d^ and 9 , 8 mm.; 

 length of wings, cf , 19 mm., 9 , 20 mm.; of hind femora, cf, 8.5 mm. 

 9 , 9.75 mm.; of ovipositor, 10.5 mm. 



Habitat. — As stated above, these insects come from Carcaraha, 

 Argentina, where they were taken at lights. 



48. Gryllodes laplatae Saussure. 



Gryllus laplatae Saussure, Miss. Mex., Orth. (1874), p. 408. 



Gryllodes laplatcB Saussure, Mem. Soc. Geneve, XXV (1877), p. 215; Kirby, Syn. 

 Cat. Orth., II (1906), p. 43. 



Habitat. — There are several specimens of this insect at hand in the 

 present writer's collection from both Rosario and Carcaraha, Argen- 

 tina. 



Possibly this and the two preceding are representatives of a single 

 very variable species, which has a wide distribution over South 

 America. The present form and G. argentinus described here agree 

 in length of ovipositor. 



Family GRYLLOMORPHID.^. 



The insects, which have been relegated to the present family, occur 

 chiefly in the Orient. Two genera, however, have representatives in 

 South American countries. Odonto gryllus with two species from Peru 

 and Ecuador and Zoara with a single species from Jamaica. None 

 of these appear to be among the specimens now being reported upon. 



Family MYRMECOPHILID^. 



The crickets which comprise this family are found fairly well- 

 distributed over the temperate and subtropical countries of the earth. 

 They very likely also occur in the tropics, but thus far have not been 

 collected. These insects arc all small, some of them even minute, 

 wingless, and quite delicate in structure. As the name implies, 

 they live with ants, in the nests of which they are to be looked for. 



The material at hand does not contain any representatives of the 

 family, and so far as the present writer is aware, but a single species, 

 Mynuccophila americana Saussure from Colombia is recorded as occur- 



