A MONOGRAPH OF TEE PILL-MILLIPEDES. 277 



nuohal-plato olive-green or brown ; antennse und legs olive-green ; 

 basal segments of the latter pale. 



Resembling A. heterostlcta in strncture of head, nuchal-plate, and 

 2nd tergite, but the margin of the lamina gradually becoming thicker 

 from below up to the level of the eyes, although not abruptly 

 thicker at this point. Terga smooth and polished, sparsely marked 

 with shallow punctures, anal tergite entirely smooth, not saddle- 

 shaped, without marginal sulcus, but notch distinct and continued on 

 the inner surface by a fine sulcus which divides the inner crest into 

 two ; the anterior portion of the crest short, only as long as the crest on 

 the tergite in front ; the part behind it about three times the length. 

 Vulva with largo, nearly semicircular movable digit of first pair of 

 copnlatory forceps long and distinctly hooked at the apex (for the rest, 

 see figure). 



Length 9 34, width 18-5 ; of $ length 27, width 13-5. 

 Locality. — Nilgiri Hills [E. Thurston). 



Also four specimens, too badly preserved to bo certainly determinable, 

 from Dimhutti, near Kotagiri, Nilghiri Hills, 1,000 feet, and others 

 belonging to this or a closely-allied species from Yercaud in the 

 Sheveroy Hills {J. R. Henderson), 



This species differs from A. heterosticta in many characters, of which 

 not the least striking are those connected with the generative organs. 

 But in addition the margin of the lamina is evenly thickened in 

 ^4. heterosticta, and the crest on the inner border of the anal tergite is 

 represented merely by a single anterior tubercle. 



Arthrosphcera Ilendersoni (Pocock). (PI. A, figs. 4:-4d.) 

 Ann. Mag. Nat. Hist. (6), XVI., p. 411 (1895). 

 ^,9. Colour deep olive-brown with irregular black blotches over 

 the segments ; head and nuchal-plate piceous ; autennre and legs 

 green ; basal segments of the latter fulvous. 



Head and nuchal-plate polished, sparsely punctured ; 2nd tergite 

 densely punctured above, smoother in front ; lamina small, margin 

 evenly arched, but with a conspicuous nodular thickening opposite the 

 eye ; rest of the terga, namely 3 to 10, with hinder border smooth, the 

 rest densely corrugated and punctured, pubescent in front; the 

 inferior angles of the 8th to the 10th considerably thickened and pro- 

 duced both posteriorly and externally. 



