450 bulletin: museum of comparative zoology. 



ter, which is finely and densely punctate. Legs foveolately punctate. 

 Each puncture bearing a glistening scale-like hair. 



Color black, with the marginate portions of the head and gaster 

 yellow, and the tibiae ferruginous. 



Described from four workers from Abuna and Madeira-Mamore 

 Camp 41. 



The very long, slender, and curved spines of the petiole, compared 

 with those of the postpetiole, and the lamellate occipital corners, with 

 the concave apices are characteristic of this species. It is related to 

 C. spinosus but differs in the form of the spines, and the absence of 

 pile on the dorsum. 



126. Cryptocenis {Cryptocerus) spinosus Mayr. 

 One colony found at Porto Velho, Rio Madeira. 



127. Cryptocerus (Cryptocerus) pusillus Klug. 



Widely distributed throughout Brazil. Numerous specimens were 

 taken at Ceara, running along the wires of a fence, in the posts of which 

 they were nesting. At Manaos a colony was taken from a hollow 

 twig. 



128. Cryptocerus (Cryptocerus) minutus (Fabricius). 

 Nesting in twigs at Natal, Manaos, Itacoatiara, and Porto Velho. 



129. Cryptocerus (Cryptocerus) deprcssus Klug. 

 This was the commonest species of the genus at Manaos. 



130. Cryptocerus (Cryptocerus) maculatus F. Smith. 



A few specimens were taken at Natal, and a colony was found in a 

 hollow twig on a caju tree at Abuna, Bolivia. 



131. Cryptocerus (Cryptocerus) multispinus Emery. 

 A single worker from Abuna. 



132. Cryptocerus (Cryptocerus) cordatus F. Smith. 

 A small colonv from Porto Velho. 



