158 Zoologica: N. Y. Zoological Society [III; 4 



Female (dejilated). Length nearly 4 mm. 



Distinctly larger than the female of hermione and of a 

 different color, being castaneous brown ; mandibles and clypeus 

 pale reddish brown; antennee and legs pale yellow, with the 

 antennal clubs and scapes, femora and tibiae, except their bases 

 and tips, infuscated. Piligerous punctures on the head more 

 distinct than in hermione. Epinotum in profile scarcely angular, 

 but rounded as in that form and the typical helena. 



Described from numerous workers and a single female 

 taken from two colonies inhabiting the petioles of young Tachi- 

 galias at Kartabo. I have attached this form to helena though 

 the shape of the head and the length of the antennal scapes are 

 different. The other characters, however, such as the shape oi 

 the thorax and petiole, the sculpture and pilosity are so similar 

 that it can hardly be regarded as a distinct species. 



17. — Leptothorax (Goniothorax) echinatinodis Forel subsp. 



aculeatinodis Emery var. pleuritic us var. nov. 

 Worker. Length 2.2-2.5 mm. 



Differing from the typical aculeatinodis in the following 

 particulars: Head very dark brown or piceous, like the gaster; 

 whole upper surface of the thorax ivory or brownish yellow, only 

 the mesopleurse and sides of the epinotum dark brown. Petiole 

 pale, like the thoracic dorsum ; postpetiole brown, paler than the 

 gaster; scapes, base of funiculi, tarsi, tibiae and bases and tips 

 of femora pale ivory yellow, remainder of femora dark brown, 

 as are also the clubs of the antennae. Pilosity abundant, long, 

 erect, present also on the scapes and legs, the hairs being obtuse 

 but neither stout nor clavate. Rug£e of the petiole somewhat 

 concentric. Tubercles on the petiole and postpetiole small and 

 blunt. Epinotal spines long, slender, curved downward and 

 directed upward, backward and outward, slightly shorter than 

 the base of the epinotum. 



Female. Length about 3 mm. 



Head smooth and shining only in the middle between the 

 frontal carinae and imaginary lines continuing them to the 

 posterior border of the head; lateral to these lines the surface 



