74 Mr. F. Smith on some new Genera and Sped* 8 



# 1. Myrmicocrypta squamosa. (Plate IV. tigs. 14-17.) 



31. ochracea ; corpore asperrime squarnoso ; alis subhyalinis. 



Fonale. Length 1 \ line. Ochraceons, and covered on every part 

 with separate and not very distant scales, which are of a glittering 

 seniitransparent white, — those on the scape of the antennae and legs 

 most dense, the flagellum alone being naked ; the mandibles stout, sub- 

 triangidar, with seven acute teeth on their inner margin ; the eyes and 

 ocelli black ; the apex of the joints of the antennae fusco-ferruginous. 

 Thorax : the disk rather darker than the sides or the legs j the ante- 

 rior tibiae armed at their apex with a stout flattened spur ; the inter- 

 mediate and posterior pair are not furnished with spines ; the scutellum 

 bidentate ; the verge of the truncation of the metathorax is also biden- 

 tate. The abdomen is very finely and delicately reticulated, and of a 

 rather darker colour than the head and thorax; the wings slightly 

 coloured, semiopake, with the nervures pale testaceous. 



Ilab. St. Paul (Brazil) ; captured by Mr. II. W. Bates. In the National 

 Collection. 



Genus Pheidole, Westw. 

 1. Pheidole diversa. 



P. nigra, nitida ; capite maximo, elongato-quadrato, postice profunde emar- 

 ginato, antice striate 



Worker major. Length 3£ lines. Black and shining; the head 

 oblong-quadrate, deeply emarginate behind, and with a central deeply 

 impressed longitudinal line ; the scape of the antenna?, the mandibles, 

 and anterior margin of the head obscure ferruginous; the flagellum 

 rufo-testaceous ; the head longitudinally striated, with the hinder por- 

 tion rugose. The thorax and legs ferruginous, the former obscure 

 above and coarsely rugose ; the metathorax with two erect acute 

 spines ; the femora and tibia? more or less fuscous in the middle above. 

 Abdomen ovate, very smooth and shining ; the insect thinly sprinkled 

 with erect black pubescence. 



Worker minor. Length \\ line. Pale rufo-testaceous; the abdo- 

 men slightly fuscous above ; the head very smooth and shining, of the 

 ordinary size, as in Myrmica scabrinodis, thinly covered with erect pale 

 pubescence. 



Sab. St. Paul (Brazil). 



Subfamily Cryptoceridje, Smith. 

 Genus Crittoceiuis, Latr. 

 1. Cryptocerus quadrimacidatus, Klug. 

 Fa-mina. C. elongatus, aterrimus ; abdomine flavo 4-maculato. 

 Operariti. C. niger, depressus, setis argenteo-nitidis ornatus; capitis ante 

 oculos marginibus lateralibus pallide ferrugineia ; tibiis ferrugineis ; 

 thorace latere utroque spinia duabus armato. 



