REPORT UPON TWO COLLECTIONS OF MYRIOPODA. 135 



recorded from Ceylon and India, although three species are known 

 from Burma ; and the peculiar genus Asanada, with its single species, 

 occurs in Burma, and was originally recorded from Kulu in the 

 Western Himalayas. 



The Diplopoda are herbivorous, slow-moving, usually cylindrical, 

 hard crustaceous animals, with two pairs of legs upon most of the 

 segments of the body. The Oriental families of this group are the 

 Po/ya;em^« or hairy-tailed millipedes ; the Zcphroniida or pill milli- 

 pedes, th.e Polyzcnida or suctorial millipedes, the LysiopctalidcB, lulidce, 

 and Polydesmidm. The Poli/xcnuke and Lysiopctalidce are hero for 

 the first time recorded as Indian or rather Ceylonese. The former 

 are quite unmistakable, and the affinities of the single-known genus of 

 the latter are given below. The Zephroniidce cannot be confused 

 with the others, and the Polydesmidce differ from the lulidcB in having 

 only 20 segments in the body. Four of the genera of Pohjdcsmidce men- 

 tioned are hard to recognise and of doubtful value. In Leptodesmus the 

 tail is cylindrical ; in Paradesmus and Stvongylosoma it is triangular and 

 truncate, Paradcstmis having larger keels than Strongylosoma ; while 

 Polydesmiis has the dorsal surface sculptured. The form of the other 

 two genera is very peculiar, and is well shown in the plate at the begin- 

 ning of this paper. The two genera of lulidce are very much alike 

 externally. Spirobohis as a rule is shorter and stouter, with the man- 

 dibles more exposed at the sides, a differently constituted lower lip, and 

 the 4th and 5th segments each with a single pair of legs ; in 8piros- 

 trcptus, on the other hand, the 4th segment is without legs, and the 

 5th has two pairs. Trachyiulus may be recognised from both of 

 them by the peculiar arrangement of the eyes, the carinate or warty 

 segments of the body, &c. 



List of the described species of Indian and Ceylonese Myriopoda :-— 



CLASS, DIPLOPODA. 



Sub-class, Pselaphognatha. 



Family, PolyxenidcB. 



Polyxenus ccylonicus, sp. n. Ceylon (cf. infra, p. 142). 



Sub-class, Chilognatha. 



Order, ONisooMORrHA. 



Family, Zephroniidce. 



