[S2l] FORMICID,* 117 



shorter, the hairs of the abdomen much finer and the erect hairs of the 

 femora wanting. 



Worker: Length about 3 mm. Head and teeth of mandibles 

 black, the abdomen dark brown ; antennae, mandibles, thorax, legs and 

 nodes reddish yellow ; coloration of the last three or four joints of the 

 antennae and the femora as in the female, the upper surface of the 

 thorax and nodes more or less decidedly reddish brown. Striation of 

 the head more distinct than in the female, and the space between the 

 striae more or less distinctly reticulated, particularly so towards the 

 sides. Pronotum and mesonotum and the nodes finely rugose; sculp- 

 turing of the metanotum slightly coarser. Abdomen smooth ; all the 

 hairs similar to those of the female. 



The worker is very similar in appearance to those of L. yankee^ 

 though somewhat larger, more robust, the sculpturing coarser and the 

 hairs stouter. 



One female and twelve workers, taken at Metlakahtla in June. 



Type. Cat. no. 5278, U. S. National Museum. 



Myrmica sabuleti Meinert, var. lobifrons var. nov. 



Worker : Length about 3 mm. Color dark brown or black ; mandi- 

 bles, antennae, legs, sides of the thorax and of the abdomen more or 

 less distinctly yellowish brown, reddish brown, or almost black. 



This variety is closely related to a form of Myrmica sabuleti in- 

 habiting South Dakota, but is somewhat larger and much darker, 

 with the sculpturing of the head and thorax coarser and the hairs 

 stouter and shorter. 



Type. Cat. no. 5279, U. S. National Museum. 



Myrmica sulcinodoides Em. 



Myrmica sulcinodoides EM., Zool. Jahrb. Jena, p. 313, 1894. 



The palest specimens of this series agree exactly with those which 

 I have seen from Hill City, South Dakota, while others are of a con- 

 siderably darker shade. 



Sixteen workers, collected at Sitka, June, 1899. 



