COLLEMBOLA OF MINNESOTA 93 



acquainted, and the anal horns are much smaller than in any 

 other of our species. 



Achorutes schbtti Reut. 

 PI. X, Figs. 17-19; XI, Fig. 4. 



1895. Achorutes schotti. Renter, Finl. Coll. p. 31. PI. II, 8. 



1896. Achorutes schotti. Schaffer, Coll. v. Hamburg, p. 171. PI. Ill, 57. 



"Blue or grayish blue, short haired; tibia with a single cla- 

 vate hair over the large claw ; large claw slightly curved, rather 

 stout, smaller claw very slender, subuliform or almost bristle-like, 

 reaching about to the middle of the large claw. Furcula with 

 the dcntes shorter than the manubrium, somewhat thick, slightly 

 narrow at the apex, a long hair behind, near its base, mucrones 

 aboutt 1/3 to 2/5 shorter than the dentes, slender, its apex 

 acuminate and slightly curved ; anal papillae minute, spines 

 small, straight, about the length of the papillae. Length, I mm." 



It will be noticed that Reuter does not mention the tooth 

 on the inner margin of the large claw, yet he shows in his figure 

 that it is not very large. The antennae are of the short type, 

 much like that which I have figured for A. boletivorus. The 

 body is rather short and heavily built. Some of the specimens 

 show hardly any of the bluish tint, but are a rather light gray. 

 The tenent hair is much shorter and more slender in my spec- 

 imens than in either A. schneideri or A. socialis, though it seems 

 long in Renter's figure. I have only taken the species twice, 

 and then sparingly. Under stones in moist places. Length, I 

 mm. Rather a sluggish form. 



Podura aquatica Linn. 

 PL XI, Figs. 6-1 1. 



1740. Podura aquatica nigra. DeGreer, Acta Soc. Reg. Sc. Upsal. 



1746. Podura aquatica nigra. Linne, Fauna Suec. Ed. I. p. 343. 



1758. Podura aquatica. Linnaeus, Syst. Nat. Ed. X. p. 609. 



1762. La Podure noire aquarique. Geoff roy, Ins. Env. Paris. II. p. 690. 



J 77S- Podura aquatica. Fabricius, Syst. Ent. 



1776. Podura aquatica. Miiller, Zool. Prod. 



1780. Podura aquatica. O. Fabricius, Fauna Groenl. p. 211. 



1781. Podura aquatica. Schrank, En. Ins. Austria;. 

 1804. Podura aquatica. Latreille, Hist. Nat. Crust, et Ins. 



1835. Podura aquatica. Boisduville & Lacordaire, Faun. Ent. Env. Paris. 



