JAPANESE COLLEMHOLA. 53 



maniil»riiiin (basal segment, Fig. 2) swollen ; dentes 

 (intermediate segments, Fig. 7) stout, slightly tapering, 

 with stifl* bristles ; mucrones (apical segments) half as 

 long as the dentes, concave, in form as represented in 

 Figs. 7 and 8. Anal spines (Figs. 1, 2 and 9) two, sub- 

 equalling the superior claws in length, cnrving forward 

 and seated upon tuberculate papillae, the bases of which 

 are contiguous. 



Length 1.3 mm. I have examined over three hun- 

 dred examples of this species, which Dr. Goto found on 

 the surfaces of pools and wells during wet seasons. 



A. communis is most nearly allied to A. annatus Nic' 

 but I have compared the Japanese form with European 

 examples of ariuatus, which were sent to me by Dr. C. 

 Schatfer, of Hamburg, and find the two forms to be un- 

 questionably distinct. They are separated by consider- 

 able differences in form of body, coloration, shape of 

 inferior claws, mucrones and post-antennal organs and 

 arrangement of the e3^es. 



A. communis also bears much resemblance to A. longi- 

 spinus Tull.2 



Genus XENYLLA Tullberg. 



Xenylla longicauda, n. sp. 



General color (Fig. 10) dark indigo blue, mottled 

 with yellowish-white, which is the ground color; dor- 

 sum with two interrupted black stripes, subdorsal in 

 position ; also a black transverse streak in each interseg- 

 mental region ; sternum yellowish-white, mottled with 

 dark blue. Eyes (Fig. 11) five on either side, hemi- 

 spherical, seated upon convex, minutely tubercnlated, 

 ))lack patches, which are narrowly encircled with white. 



•Sicolet '41, V). 57, 1)1.5, flg. 6; Tullberg '72, p. 51, taf. X, fig8.23-2.-i; Lubbock '73, 

 p. 18IV181, pi. 40; Tullberg '76, p. 38, taf. 10, tig. 35; Schaffer "JG. p. Hi, taf. II, figs. 

 31, 46 and taf. Ill, fig. 60. 



2 Tullberg '76, p. 37, taf. X, figs. 31-34; Schaffer '96, p. 191, taf. II. figs. 44, 45. 



