242 PROCEEDINGS OF THE ACADEMY OF [June, 



minute, short hairs. Penultimate ventral abdominal segment with 

 distal margin broadly convex between the forceps. Caudal meta- 

 tarsus elongate and slender, distinctly longer than combined length 

 of second and third tarsal joints. 



Allotype: 9 ; same data as type, but taken March 29, 1906. [U. S. 

 National Museum.] 



Agrees with male except in the feature noted above and as follows : 

 Pygidium subrectangulate, slightly broader than long, lateral margins 

 very feebly and evenly convergent distad. Forceps widely 

 separated ;^^ shaft slender, simple, cylindrical, tapering and weakly 

 incurved in distal half to the aciculate apex. 



Measurements {in millimeters) . 



Length of Length of Width of Length of Length of 

 cf body. pronotum. pronotum. legmen. forceps. 



Cordoba, Mexico 5.4 .82 .82 L63 L16 



Type. Cacao 4.7 .8 .8 L6 L22 



ParaY(/pes. (7) Cacao., 3.8-5.2 .71-.77 .73-.78 L44-L3 L09-L16 



9 



Fortin, Mexico 5. .88 .7 1.65 L63 



Allotype. Cacao 4.4 .75 .68 L45 L38 



Paratypes. (11) Cacao 4. -4.8 .75-.81 .7 -.82 1.36-1.5 1.22-1.29 



The series shows quite marked individual size variation. This is 

 greatest in pronotal proportions and length of. forceps. 



Head dark brown, antenna) with proximal joints dark, one or two 

 distal joints pale. Pronotum, tegmina and wings shining black, 

 weakly metallic, showing a faint bluish lustre in some lights. Limbs 

 dark brown, becoming slightly paler toward the apex of the femora 

 and base of the tibiae.'^ 



Specimens Examined: 22; 8 males, 13 females and 1 immature 

 individual. 



Fortin, Vera Cruz, Mexico, XI, 1887, (L. Bruner), 19, [Hebard 

 Cln.]. 



Cordoba, Vera Cruz, Mex., Ill, 1908, (F. Knab; in bromeUads), 

 Icf, [U. S. N. M.]. 



Cacao, Trece Aguas, Alta Vera Paz, Guatemala, III, 29, and 

 IV, 26, 1906, (Barber and Schwarz), To", 12 9 , tyjje, allotype, para- 

 types, 1 juv., [U. S. N. M.l. 



i' See PL XVI, fig. 7. 



2" In some individuals the contrast is more decided than in others. 



