NO. 14 MILLIPEDS OF WEST INDIES AND GUIANA LOOMIS 9 



First few pairs of legs smaller and weaker than those farther back, 

 gradually increasing in size on the first few segments. Coxae of first 

 pair of legs each produced into a small, inconspicuous, triangular lobe 

 at the distal end on the dorsal side. 



The unconscious rivalry between millipeds for the greatest number 

 of segments becomes keener with the finding of this Tobago Island 

 species. Several years ago another species of this order was described 

 from California/ one of the specimens having 192 segments but the 

 others falling considerably below this number. Although 192 segments 

 is the greatest number thus far known for a milliped, it is not unlikely 

 that specimens of the present species or the California one will be 

 found exceeding this number. 



Type. — U.S.N.M. no. 1087. 



SIPHONOCYBE HART! (Pocock) 



Plate I, fig. 3 



Siphonorhinus harti Pocock, Ann. and Mag. Nat. Hist., ser. 6, vol. 15, p. 313, 



1895. 

 Siphonophora nigrosiynata Silvestri, An. Mus. Nac. Buenos Aires, vol. 6, p. 54, 

 1898. 



Specimens of this species were collected in the Maracas Valley and 

 in the Arena Forest area of Trinidad, February 1932. 



Living color light golden brown with a broad dark brown line 

 reaching from the first to almost the last segment. The anterior end 

 of the body is slightly darker than the posterior end. Head and an- 

 tennae pure white, in conspicuous contrast to the anterior segments. 

 The dense pubescence of the segments gives the body a velvety ap- 

 pearance in life. The animals are very sluggish and move with great 

 deliberation. 



The gonopods are of the same general type as those of Siphonophora 

 progressor Qiamberlin, as shown in Chamberlin's drawing." 



There appear to be no grounds for maintaining Silvestri's species 

 as distinct from harti Pocock. 



Family POLYZONllDAE 

 SIPHONOTUS PURPUREUS Pocock 



Siphonotus purpureiis Pocock, Journ. Linn. Soc. London, vol. 24, p. 479, 1894. 

 Siphonotus virescens Silvestri, An. Mus. Nac. Buenos Aires, vol. 6, p. 55, 1898. 

 This species was collected in the following places. Roseau, Domi- 

 nica ; Port-of-Spain, Trinidad ; Tobago Island ; Fort-de-France, Mar- 

 tinique ; Point-a-Pitre, Guadeloupe ; Paramaribo, Dutch Guiana. 



* Illaane plcnipes Cook and Loomis. Proc. U.S. Nat. Mus., vol. 72, pp. 10-12, 

 1928. 

 ° Proc. U.S. Nat. Mus., vol. 60, pp. r-71, illus., 1922. 



