FOLSOM. — JAPANESE COLLEMBOLA. 267 



Genus Seira Lubb. 



Seira japonica Folsom. 



1898. Seira japonica Folsom, pp. 55, 56, Figs. 15-18. 



Many of Dr. Ishikawa's specimens differ from ray types by being 

 larger, attaining a length of 3 mm. The antennal segments are more 

 slender, are related to each other nearly as 3 : 5 : 4.5 : G, and are purple 

 throughout. Clavate hairs are few in number and the scales have dis- 

 appeared. The second abdominal segment is usually yellow ; the meso- 

 uotum is laterally bordered with blackish blue and occasionally each side 

 of the head bears a stripe of that color. A single example is yellow 

 throughout, excepting the antennae, lateral borders of meso- and meta- 

 notum and the posterior border of the fifth abdominal segment, all of 

 which are purple. In all other respects the specimens agree perfectly 

 with the types, which are manifestly younger individuals. 



Sixteen specimens, large and small, were taken at Komaba, Tokyo, 

 October 27 and November 16, 1894. I omitted to mention in my pre- 

 vious paper that the types are dated June 24, 1897. 



Genus ToMOCERus Nic. 



Tomocems varius, n. sp. 



(Plate 2, Figs. 28-30, Plate 3, Figs. 31, 32.) 



Color with scales, plumbeous ; without them, dull yellow. Eyes 

 (Fig. 28) six on either side, on black patches. Antennne almost as long 

 as the body, with purple segments, related in length as 3 : 4 : 27 : 5. 

 From under the anterior margin of the mesonotum project many stout 

 stiff seta3 (Fig. 29). Superior claws (Fig. 30) nearly straight, rather 

 stout, with from two to five teeth which successively become more obscure 

 toward the apex of each claw ; in the kw specimens at command, the 

 fore claws bear two or three teeth, the mid claws from two to five, and the 

 hind claws two ; the right and left claws of the same pair of feet often 

 differ in the number of teeth. The inferior claws are a little more than 

 half as long as tlie others, broadly lanceolate and unidentate. A sin- 

 gle tenent hair is present. Furcula seven tenths the length of the body, 

 with segments related nearly as 3 : 4.5 : 1. The dental spines (Fig. 31) 



