FORMICID^ FROM LOWER CALIFORNIA. 165 



First node of the petiole large, its sides parallel, stout- 

 est at base, the apex rounded gently curved forward and 

 with two longitudinal impressions. Second node broad- 

 ly pyriform, stoutest posteriorly, and also with two long- 

 itudinal impressions above. Both joints are highl}^ pol- 

 ished and minutely granulated. 



Abdomen polished, finely shagreened and sparsely 

 punctured. Hairs yellowish and rather sparse, more 

 dense along posterior margin of abdominal segments; 

 those of the anterior margin of the clypeus are longer 

 and stouter, while those on the under side of the head are 

 very long, slender and curved forward. Hairs of antennae 

 and legs shortest and semi-erect. 



Color dark brown, almost black, the thorax somewhat 

 lighter. Antennae, mandibles and legs reddish-brown. 



This species resembles very much Afh. Andyei,^N'\^\c\\ 

 differs from it, however, in the much coarser sculpture 

 of the head and thorax, in the stronger constriction be- 

 tween the meso- and metathorax, the stouter and less 

 strongly curved first node of the petiolus, in the rougher 

 sculpture of both nodes and in the very profuse, brist- 

 ling, white and glittering hairs, which are most conspic- 

 uous on the abdomen and legs. 



Described from seven specimens. 



San Julio. 



7. Cremastogaster brevispinosa Mayr. 



Cremastogaster brevispinosa Maj'r, Sitzber. Akad. Wiss. Wien, Ixi, 



1870, p. 403. 

 Cremastogaster brevispinosa Mayr, Verb. zool. bot. Ges. Wieu, xx, 



1870, p. 992. 

 Cremastogaster brevispinosa Mayr, Verb. zool. bot. Ges. Wieu, xxxvii, 



1887, p. 626. 



This species has, so far, been recorded from Costa 

 Rica and the U. S. of Columbia. 

 Six specimens. Magdalena. 



