On Two Species of Cy[)VMii. 207 



Leacli saw larger 8|jeciiiicns than tliose that he phiced in his 

 cabinet. However that may be, there is no questiun that the 

 true /. lundinensis, j[n\i!;\ui^ from the only examples of it that 

 are knowii, is a mneh larger species than tiie one that has 

 been mistaken for it on the Continent. Ailcl to this that the 

 tergal striiu are much more numerous and close-set in /. lon- 

 di'nensi's than in teutonicua^ and no one can doubt that the two 

 are perfectly distinct species. It is safe, moreover, to 

 prophesy that when fresh examples of /. loadinensis come to 

 hand for examination further ditierences will be tound in the 

 structure of its copulatory organs. 



'Jhe differences between the two may be tabulated as 

 follows : — 



a. Total length from about 38 to 48 mm., widtli 4 ; tergal 



stria3 very uiimerous, tine, and close-set, the inlervening 

 spaces rarely exceeding and generally less than the dia- 

 meter of the porous area ; caudal process short, subcylin- 

 drical, blunt-pointed or obsolete (submucronate) loiulinensis. 



b. Total length from about 2o to 35 mm., width 25 ; tergal 



stria? much less numerous and further apart, the inter- 

 vening spaces generally much exceeding the diameter of 

 the porous area ; caudal process obtusely angular, not 

 even submucronate teutnnicm. 



I. teutonicus occurs in Scandinavia, Denmark, Western 

 Germany, the north of France, and the south of England. 

 The British Museum has specimens from Kent, Middlesex, 

 ►Surrey, Hampshire, Oxford, and Warwickshire, but none 

 from South AVales, Gloucestershire, Somerset, Devon, or 

 Cornwall, although the Millipedes of these counties have been 

 fairly well worked. 



XXVI. — Descriptions of Two Species of Cyprasa, hath of the 

 Svhqenus Trivia, Gray. By JameS CoSMO MelvilL, 

 M.A., F.L.S. 



For the opportunity of examining the two cowries now 

 thought wortliy of description 1 am under much obligation to 

 Mr. Frederick L. Button, of Oakland, California, a most 

 enthusiastic cypra^ologist who has devoted especial attention 

 to the Trivia'. With much liberality he has from time to 

 time forwarded me scries of species, inhabitants of the Western 

 American seas, including fusca, califurnici, and sawjuinen, 

 all of Gray, all three exhibiting much variation, with several 



