18"^ Psyche [December 



Brownish yellow, legs a little paler, clypeus and posterior por- 

 tion of gaster somewhat darker; antennal clubs blackish. 



Worker: Length, 2 mm. Head distinctly longer than broad, 

 narrower behind than in front, without posterior corners but with 

 distinct, reflected occipital margin. Eyes in front of the middle of 

 the sides. Mandibles finely denticulate, with two larger apical 

 teeth. Anterior clypeal border straight, transverse and entire in 

 the middle. Antennal scapes extending about one-fourth their 

 length beyond the occipital border of the head. Thorax, petiole, 

 postpetiole and gaster much as in the soldier, but epinotal teeth 

 more slender and pointed and a little longer than broad at their 

 bases. 



Sculpture and pilosity as in the soldier but the hairs are some- 

 what more erect. 



Brownish yellow, mandibles paler, head, clypeus and terminal 

 antennal joint castaneous. In some specimens the middle por- 

 tions of the femora and tibiae are very feebly infuscated. 



Female: Length, 5-5.5 mm. Head distinctly broader than long, 

 a little broader behind than in front, with straight sides and feebly 

 excavated posterior border. Mandibles finely denticulate, with 

 two large apical teeth. Clypeus as in the soldier. Antennal 

 scapes reaching to the posterior corners of the head. Thorax of 

 the usual shape, with strongly flattened mesonotum; epinotum 

 with acute teeth as long as broad at their bases. Petiolar node 

 rather low, its upper border sharp and entire. 



Sculpture, pilosity and color much as in the soldier, but the head 

 indistinctly rugulose and coarsely punctate over its whole dorsal 

 surface, the mesonotum more densely punctate and behind on the 

 middle finely and densely striolate, the postpetiole opaque and 

 finely punctate and the gaster brown, except at the base. Ocellar 

 region black. Wings yellowish hyaline, with pale yellow veins and 

 pterostigma. 



This species differs from pubiventris, rufipilis and angusta in its 

 smaller size, in pilosity and in the head of the soldier being even 

 smaller than in angusta. The hairs of peregrina are more reclinate, 

 more abundant and shorter than in any of these species, the epi- 

 notal spines are less developed, the pronotum is smooth and 

 rounded, without tubercular humeri in the soldier and the head 



