VOL. IV.] California Earth-lVorms. 251 



though it is probable that the Australian species has been intro- 

 duced from some other country. 



There are at least three California species. 



Deltania elegans n. sp. Size two to four inches. Septal 

 glands ver}' small, the posterior one being the smallest. Sperma- 

 theca variable, very pellucid, assuming the nature of a spermsac. 

 Spermsacs small, deeply lobed, one pair in xi and one in xii. 

 Prostate helix-like at the top. Penial papillae with two or more 

 penial setae in each sac. 



Habitat. — San Francisco, Berkeley, Mount Diablo, Santa 

 Rosa, or in general, the country surrounding San Francisco Bay. 

 Is probably of a much wider distribution.* This is the largest 

 species of the genus so far known. 



The most important feature of this species is the abnormal 

 construction of the spermatheca. Instead of being a highly 

 muscular and glandular organ with a muscular duct, it simply 

 consists of a very thin-walled sac or membrane in which 

 spermatozoa are stored. But the most peculiar fact connected 

 with the spermatheca is, that it is variable in position, sometimes 

 being median, sometimes paired, or sometimes entirely absent, 

 thus demonstrating the great variability of the organ. This 

 species differs from Deltania dubia Fletcher by having the anterior 

 nephridium commencing already in somite ii, the latter species 

 having the first nephridium in v. 



DET-.TANIA Troyeri n. sp. A very minute species of the 

 size of an Enchytrseus, largest specimen about one and one- 

 fourth inches by one-half line, while most specimens are smaller. 

 Septal glands large, the one in vi the largest. One pair of 

 large, opaque and permanent spermatheca with one pair of 

 diverticula in ix opening viii,- ix. One developed seta in 

 each sac of penial setse. Prostate tubular, not helix-like at the top. 

 Penial exterior papillae not prominent. The inner couples of 

 setse are further apart than in the following species. The 

 diverticula of the spermatheca are about one-half or more longer 

 than the spermatheca. 



* Siuce writing the above I have found two species of Deltauia in Baja 

 California at Ensenada; the genus has thus a wide distribution. 



