Genera and Species of Millipedes. 429 



Phyodesmus vittatus^ sp. n. (Fig. 3.) 



cJ. — Colour ((.liy and faded) a tolerably uniform pale 

 brown, but with a distinct continuous narrow pale band 

 passing along the middle of the dorsum from the first to the 

 nineteenth segments. 



First tergite with its angles scarcely produced. 



Body not so wide anteriorly as in the preceding two species, 

 the fifth segment being only a little narrower than those 

 situated more posteriorly ; the keels more elevated from the 

 base and the whole of the dorsal surface more coarsely 

 granular; lateral margins of keels dentate from the fifth 

 backwards ; the teeth from two to four in number, not includiTig 

 the anterior and posterior angles. Pore about two diameters 

 from the edge on the fifth and seventh segments ; about one 

 or less from the adjacent notch on the posterior segments. 

 Sternal spines much longer than in the preceding two species. 



Copulatory foot (as in tig. 3) long, straightish, ending in two 

 unequal prongs, the longer strongly curved and slender, the 

 shorter more laminate and abruptly hooked. 



Measurements iii millimetres. — Total length 93 (at least) ; 

 width of second segment 13'8, of fifth 15, of twelfth l-i'^. 



Loc, Borneo {II. M.S. ' Samaranq^). 



This species belongs doubtfully to the genus Phyodesmus^ 

 being apparently more coarsely granular than tlie type 

 {P. pictus, Peters), with the anterior angles of the first tergite 

 not produced to anything like the same extent. Either of 

 tlie other species here referred to Phyodesmus may prove to 

 be identical with pictus, Pet., Petersii, Cook, or montrado, 

 Cook, which have not yet been satisfactorily diagnosed. 



Phyodesmus areatus, sp. n. 



9 . — Colour (dry and faded specimen) greyish brown ; 

 cylindrical half of segments blackish above, with a median 

 pale band ; keel-bearing portion paler in the middle, with 

 three blotches in front on each side, also some brown spots 

 posteriorly, the spots separated by whitish lines, which form 

 a kind of pale network pattern. Anterior angles of first 

 tergite produced. Dorsal surface of all the segments 

 distinctly granular, the rows of tubercles distinct. 



Side margins of the keels from about the eighth distinctly 

 dentate, but the teeth all small, about four in number not 

 including the anterior and posterior angles, so that the pores 

 never come close to the nearest notch, being usually separated 

 by about two diameters from it ; on the fifth segment the 



