128 THE CANADIAN ENTOMOLOGIST. 



outer, stout and blunt. Spring short, slender ; third joint elongate with 

 an apical and two smaller inner teeth. 



Length, 1.5 mm. (.058 inch). 



Habitat: Florida. 



I am indebted to Mr. Nathan Banks for this unique specimen and 

 species. Easily recognized by the abdominal spine, the stout inner claw, 

 and the black dorsal triangle. 



The only characters offered by Lubbock, in his Coliembola and 

 Thysanura, for separating Smynthurus and Papirius, is the form of the 

 antennae and the presence or absence of trachea?. In my studies of these 

 interesting insects I have found two other characters valuable in separating 

 these genera. These differences may be stated as follows : — 



Terminal segment of the antennae long, ringed ; larger claw uninden- 

 tate ; apical segment of the spring simple Smynthurus. 



Terminal segment of the antennae short, with a whorl of hairs ; larger 

 claw bidentate ; apical segment of the spring serrate on the 

 under side Papirius. 



Anoura magna, n. sp. 



Body short, broad, one-haif as broad as long, finely granulated. Each 

 segment with four dorsal and two lateral globular tubercles, except the 

 last, which is deeply divided, having at its apex two immense globular 

 tubercles. On the anterior part of the anterior margin of each segment 

 another smaller tubercle. From each tubercle there arise from four to 

 eight short, stiff, yellow bristles. On the dorsal part of the head the 

 number of tubercles is the same, but the two median tubercles are placed 

 on the caudal portion of a large quadrangular tubercle, which reaches 

 from between the bases of the antennae to the caudal part of the head. 

 The ground colour is a light steel blue, with lighter spots between the 

 darker tubercles. Antennae very short, not reaching the lateral margin 

 of the body by at least a quarter of its width, segments subequal, indis- 

 tinctly marked. Eyes at the side of the base of the quadrangular 

 tubercle, postantennal organs wanting. Buccal orifice blunt, short and 

 white. Legs short, with a single strong claw. 



Length, 5 mm. (.20 inch). 



Habitat : Salineville, Ohio. 



This species can be recognized by its size, colour, and the globular 

 tubercles; from gigantea Tullb., its nearest ally, from Siberia, by the 

 absence of the postantennal organ. 



