wheeler: jamaicax ants. 461 



the typical form by the absence of the tooth on the lower anterior 

 surface of the petiole. The tooth is present, however, in the workers 

 of some colonies, though very small. His statement that the antennal 

 scapes reach the occipital border of the head does not agree with my 

 observations. The material collected from the localities mentioned 

 above shows that my var. tvighti is untenable. Andre undoubtedly 

 drew his color description of vicina from immature specimens, as I 

 find two colonies in which part of the workers have the pale color he 

 describes while others have the dark mature color on which I based 

 the var. wighti. Different colonies also show considerable differences 

 in the size of the workers, from 1.8 mm. to 3.5 mm. 



The female measures 4.5-5.5 mm. and is very smooth and shining 

 throughout, of a rich castaneous color, with the antennae and legs a 

 little paler and the gaster nearly black. The antennal scapes do not 

 reach to half the distance between the posterior orbits and the posterior 

 corners of the head. The epinotal spines are reduced to minute, acute 

 teeth and the petiole bears a vestige of a tooth at its anterior ventral 

 border. 



The male measures about 2 mm. and is sordid yellow, with the head 

 and apex of the gaster dark brown, the clypeus and some clouds on 

 the thorax pale brown. The wings are long and whitish hyaline, with 

 colorless veins and pterostigma. 



This ant constructs an interesting, more or less globular or turnip- 

 shaped, black carton nest about four to six inches in diameter on trees 

 and fences. The accompanying plates (Plates 1, 2) from photographs 

 by Professor Brues give excellent views of its external and internal 

 structure. 



*26. Cryptocerus {Cyathocephalus) varians F. Smith. 



Forel states that he took this species in the botanical garden at 

 Kingston. 



27. Cyphomyrmcx rimosus (Spinola) subsp. minutus Mayr. cf . — 

 Liguanea Plain. 



28. Cyphomyrmex foxi Ern. Andre. S 9 .— Newton, 3,000 ft. 



Numerous specimens from four colonies. The female, hitherto 

 undescribed, is represented by a single, dealated individual. It 

 measures 3.4 mm. and closely resembles the worker in color, sculpture, 

 and pilosity and in the structure of the head. The spines on the humeri 

 of the pronotum are long and stout. The mesonotum is flattened 



