448 PROCEEDINGS OF THE ACADEMY OF [June, 



elliptical in outline. Subgenital plate and first proximal internal 

 spine of caudal tibia much as in fasciatus. 



Measurements {in millimeters) . 



Medellin, San Rafael, Sapucay, 



Castillo, V. C, V. C, Paraguay. 



Nicaragua. Mexico. Mexico. , ' v 



cf 9 9 9 9 



Length of body 9. 11.4 11.7 11.6 11.1 



Length of pronotum 1.4 1.8 1.8 1.9 1.9 



Greatest width of prono- 

 tum 2.7 3.4 3.5 3.7 3.2 



Length of tegmen 5.6 6.4 6.8 6.9 6.9 



Length of wings 11.6 14.1 15.9 15.1 16.5 



Length of caudal femur 6.5 8.3 8.3 7.7 7.5 



Greatest width of caudal 



femur 2. 2.7 2.7 2.7 2.8 



Length of ovipositor 6.4 7.1 6. 7.7 



The specimens before us indicate that there is a moderate amount 

 of size variation in the present species, particularly in the length of 

 the ovipositor, but the specimens from Mexico and Paraguay are 

 surprisingly similar for material from localities so widely separated. 



Color Notes.— The specimens before us are very similar in colora- 

 tion; those from Nicaragua, Brazil, and Paraguay are slightly darker 

 than the Mexican individuals. General color glossy cream-buff or 



Fig. 98. — A^emobius hrasiliensis. Ovipositor. (Greatly magnified.) 



very pale glossy tawny-olive, the underparts somewhat paler. Head 

 of general coloration, the occiput distinctly striped with three longi- 

 tudinal lines of mummy brown, eyes bistre. Maxillary palpi covered 

 with short dark hairs, of general coloration with the exception of the 

 extreme apex of the terminal segment which is bistre. Pronotum of 

 general coloration with a large meso-dorsal maculation of mummy 

 brown, the caudo-lateral portions of this maculation are of somewhat 

 darker coloration and remain as two dark dots in the palest specimens 

 in which the dark markings are very much reduced. In the palest 

 specimens the tegmina and wings are of the general coloration, with 

 the exception of a very small dark area at the discoido-anal root 

 basin of the tegmina which in the darker specimens is greatly expanded 

 and the entire exposed portions of the tegmina and wings are suffused 

 with mummy brown; intermediate channel very slightly paler than 



