COLLEMBOLA OF MINNESOTA 83 



the same hair in the ordinary position of a tenent hair, but it 

 is drawn as a simple, pointed hair. The tip of this hair appears 

 to me perceptibly swollen. Lie-Pettersen gives the size as 

 1.5 mm. which corresponds with those I have taken. The species 

 is very common here throughout the summer, among- damp, de- 

 caying leaves in the woods, at least along the Mississippi val- 

 ley. Its agility is very astonishing when we consider the ab- 

 sence of eyes. 



Seira buskii Lubb. 

 PI. VIII, Fig. 8. 



1869. Seira buskii. Lubbock, Notes on the Thys. Pt. IV. p. 280. 



1871. Degeeria cyanea. Tullberg, Fort ofver Sv. Podur. p. 149. 



18/2. Sira buskii. Tullberg, Sver. Podur. p. 41. 



1873. Seira buskii. Lubbock, Monogr. Coll. and Thys. p. 145. PI. XXII. 



1890. Sira buskii. Uzel, Thys. Bohemias, p. 54. 



1893. Sira buskii. Schott, Palsearct. Coll. p. 52. 



1895. Sira buskii. Reuter, Finl. Coll. p. 23. 



1896. Sira buskii. Lie-Pettersen, Norges Coll. p. is 



1896. Sira buskii. Schaffer, Coll. v. Hamburg, p. 203. 



1897. Sira buskii. Poppe & Schaffer, Coll. v. Bremen, p. 271. 



Lubbock thus describes the species: "Dark violet with 

 metallic reflections. Head, legs and base of antennae yelowish. 

 Eyes on a black patch, and connected by a black band. Spines 

 yellowish at base, colorless towards the extremnity. Length, 

 one-fifteenth of an inch. The basal (antennal) segment is rather 

 shorter than the second or third, which, again, are, though very 

 little, shorter than the apical. The small claw is without teeth. 

 The large one has three teeth on the inner, and one on the outer 

 margin." 



Our specimens agree pretty closely with the above de- 

 scription and with the colored figure given by Lubbock in his 

 "Monograph." I have not been able to satisfy myself as to the 

 presence of the above-mentioned outer tooth on the superior 

 claw. If present it must be very small in our specimens. 

 Ant. I is never more than half the length of Ant. II, which is 

 slightly longer than III. Ant. IV usually equals II. The distal 

 parts of tibia and femur show a decidedly blue color. As to 

 the form of the feet and furcula, it is almost exactly the same 

 as S. nigromaculata (see figures). The two species are not liable 



