108 Psyche [August 



Crematogaster from a paper nest found by E. S. Snyder on a willow 

 tree, two feet above the ground, on Paradise Key, Fla., and on 

 critically examining the large series of Crematogaster that have 

 been accumulating in my collection for more than twenty years, 

 I find specimens of the same ant and of a yellow variety from 

 several localities in Florida, Georgia and North Carolina. Prof. 

 J. H. Comstock gave me Atkinson's original photograph of the 

 nest described from North Carolina. I reproduce it in the hope 

 that the more modern half-tone process may bring out the 

 texture of the carton even more clearly than in the original article. 

 I also reproduce a photograph of the Paradise Key nest kindly 

 loaned me by Dr. Mann. 



The new Crematogaster and its variety are herewith described. 



Crematogaster atkinsoni sp. nov. 

 (Fig. 1 b.) 



Worker. Length 2.5-3.3 mm. 



Similar to the typical lineolata Say, but smaller, the latter 

 measuring from 3 to 4 mm., with the thorax, especially the pro- 

 and mesonotum more slender, the promesonotal suture more indis- 

 tinct, the mesonotum more flattened and with more indistinct 

 longitudinal carina. Head smaller and proportionally narrower; 

 the frontal groove much less distinct. Antennal scapes longer, 

 reaching about twice their greatest diameter beyond the posterior 

 border of the head. Epinotal spines decidedly longer, straight, 

 more slender and more acute, longer than the base of the epinotum 

 and as long as the distance between their insertions. They are 

 widely divergent and directed less backward and somewhat more 

 obliquely upward than in the typical lineolata. 



Surface smooth and shining, the thorax above without traces of 

 the distinct puncturation and rugulation of lineolata, except the 

 base of the epinotum, which is longitudinally rugulose. Meso- 

 pleurse opaque, finely and densely punctate. Epinotal declivity 

 very smooth and shining as are also the upper surfaces of the 

 petiole and postpetiole (opaque or subopaque in lineolata). Head 

 and gaster highly polished, except the mandibles and cheeks which 

 are subopaque and finely striate, and the clypeus, which is indis- 

 tinctly striate and somewhat less shining than the front and 

 vertex. 



