160 Mr. Smith's Descriptions 



the eyes very large, placed rather more within the face than in the 

 other species ; the antennie rather more thickened at the apex 

 than in the other species of the genus ; the meso- and metathorax, 

 abdomen and femora, fnsco-testaceous; wings hyaline, nervures 

 pale testaceous, tlie stigma fuscous; the sides of the thorax nearly 

 parallel, transverse in front, the angles rounded ; the metathorax 

 obliquely rounded at the sides. 



Worker. — 2 lines. Closely resembling the female, but having 

 the thorax strangulated in the middle, and compressed at the sides, 

 and being altogether of a paler colour. 



There is considerable difference in the form of the thorax and 

 head of this species when compared with the others ; and had I 

 not possessed the female, and had an opportunity of observing 

 that the neuration of the wings is identical with that of the 

 others, I should probably have placed this insect in a separate 

 genus. In addition to these reasons for retaining it, I have the 

 observation of Mr. Bates on its habits, that of coursing over 

 trunks of trees and leaves, in the same manner as the other species ; 

 and his note of observation — " this curious Myrmica is closely 

 allied to No. 70," P. nigriceps. 



Also from Brazil, in my own and other Collections. 



Sp. 9. Pneudoinijrma pallida. 



Worker. — Length 2 lines. Pale testaceous yellow, smooth, 

 shining and impunctate ; the eyes and tips of the mandibles 

 black ; the thorax compressed at the sides, and somewhat nar- 

 rowed posteriorly ; the petiole of the first node of the abdomen 

 pear-shaped, flattened above, and margined at the sides, the 

 second node globular : the abdomen of a paler colour than the 

 head, which is of a reddish yellow. 



This species was found by my friend, the late Edward Double- 

 day, in East Florida, a locality in which he captured many rare and 

 beautiful Hymenoptera ; to this order he was greatly attached, and 

 on the habit of many species he imparted much valuable information. 



Genus EciTON, Latr. 

 Formica, pt. Fabr. Ent. Syst. ii. p. 364 ; Latr. pt. Hist. Nat. 



Fourm. p. 26-5. 

 Myrmecia, pt. Fabr. Syst. Piez. p. 425. 

 Ecilon, Latr. Hist. Nat. des Crust, et des Ins. 

 ylncylognathus, Lund, An. Soc. Nat. xxvii. 

 CamjUognatha , Westw. Griff. An. King. xv. 516. 

 The maxillary palpi 2-jointcd ; the basal joint clavate, broadest 



