June, 19 IS-] HeBARD : AMERICAN SpECIES OF MiOGRYLLUS. 



107 



whitish.- Pronotum subequal in width. Cephalic tibire with very 

 large nearly elliptical foramen on outer face and smaller ovoid fora- 

 men, also membranous, on inner face, except in wingless individuals 

 in which inner tympanum is frequently absent on one limb and occa- 

 sionally on both. Caudal femora with ventro-proximal portion strik- 

 ingly paler than other portions of limb.^ Dorsal margins of caudal 

 tibiae normally armed with four and four spines ;* dorso- and medio- 



' Measurements (in Millimeters) of Extremes. 



Male. 



Length of | Length of 

 Body. I Pronotum. 



Length of j Length of 

 Tegmen. [ Wing. 



Length 

 ot Caudal 



San Rafael, V. C Mexico. . 

 Medellin, V. C, Mexico. . . . 

 Benque Viejo, Br. Honduras 



Tabernilla, Panama 



Ancon, Panama 



Bartica, Br. Guiana 



Kaiteur, Br. Guiana 



Igarape Assu, Brazil 



Manaos, Brazil 



Carcaraiia, Argentina 



Extremes of series 



8.5-9 

 9.0-10.3 



8.6 

 8.7- 9.7 

 7.4- 8.2 

 8.0-10. 5 



6.7 

 9.6-10. 5 

 9.0- 9.7 



10.2 

 6.7-io.s 



1.8 



7-1.9 

 -2 

 1-7 

 .7-1.8 



•5-1-9 

 .6-2.2 



1-3 



.7-2.1 

 -9-2 



2.4 

 .3-2.4 



4.0-4 

 3-7-4 



3-9 

 4-0-4 

 3-0-3 

 3-4-4 



2.8 

 4.1-4 

 4.2-4 



5-2 

 2.8-5 



II. 9-12. 6 

 12. 2-14. 9 



II. 7 

 12. 6-13. 7 



II. 2-14. I 



12.1-13.3 

 12. 3-12. 7 



14.4 

 11.2-14.9 



5-4 

 6.0 



5 

 5-6 



5-7 

 5-1 



4 

 5-7 



6 



7 

 4.8 



-5-8 



-6.9 



6 



-6.1 



-5-8 



-6.7 



8 



-6.3 



Female. 



Length 

 of Pro- 

 notum. 



Length 



of 



Tegmen. 



Length 

 of Ovi- 

 positor. 



San Rafael, V. C Mexico 2.0-2.2 



Medellin, V. C, Mexico 1.9-2.2 



Medellin, V. C, Mexico 1.9 



Orizaba, V. C, Mexico 2.2 



Benque Viejo, Br. Honduras 2.2 



Pozo Azul, Costa Rica 1.9-2.2 



Tabernilla, Panama ; 2.1 



Ancon, Panama j 2.3 



Bartica, Br. Guiana 1.9-2.3 



Kaiteur, Br. Guiana i 1.9-2 



Igarape Assu, Brazil ! i. 8-2.1 



Contamano, Peru I 2.3 



Chanchamayo, Peru • 2.1 



Carcaraiia, Argentina 2.4 



Extremes of series I 1.8-2.4 



3-7-4-3 

 3-7-4-1 



3-9 



5-1 



4-1 

 4.7-4.9 



3-8 



2.8 



4-4-5-7 

 2.3-2.7 

 4.3-4.6 



4.6 



4-7 



5-4 

 2-3-5-7 



7-2-7-3 



6.5-7-4 



6.8 



7-4 



7 

 7.8-7.9 



7 



6 

 6.2-9.7 

 5.6-6.2 

 7.2-8.2 



8.3 



8 



8.6 

 5-6-9-7 



- In occasional paler specimens, the dark portion is brownish and con- 

 fined to the three proximal segments and distal portion of the fifth, while in 

 a few very dark examples the palpi, excepting the median portion of the 

 fourth segment, are blackish. 



3 In pale examples, this difference of coloration is appreciable but by no 

 means as decidedly pronounced. 



4 Rarely five are found, as discussed above. 



