ENCHYTR^EID^E 



Two sets of glands in the penial bulb. Nephridia with large ante- 

 septal, not strongly granulated. Lymphocytes large, ovoid Color 

 pale, transparent white. 



Locality. In rotten logs at Saint Helena, Napa County, California. 

 Collected by Dr. Richard C. McGregor in 1899. 



Characteristics. The most characteristic feature is the arrange- 

 ment of the seta?. These are large, and those facing the ventral and dor- 

 sal intervals are markedly larger than the others. The spermathecae re- 

 semble those of jP. calif ornica, but the proportion of stem to ampulla 

 is different ; the shape of the stem is also different in the two species. 



FIG. 80. Fridericia macgregori. 



From F. calif ornica our present species also differs in the form of the 

 nephridia and in the shape of the salivary glands. 



The chylus cells in the intestine are long, narrow, and are charac- 

 terized by the lower part of the inner duct being spirally twisted or at 

 least strongly sigmoid. The duct is lined with a regular and even 

 layer of thin cytoplasm, exterior to which is a thicker layer of denser 

 cytoplasm, capable of very dense staining. 



FRIDERICIA CALIFORNICA sp. nov. 



pi. xv, figs. 8, 9; text-fig. 81. 



Definition. Length 22 mm., width .5 mm. Somites 70. Setae 

 anteriorly 5 and 6 in each bundle, posteriorly 6 and 4 of three different 

 sizes. Head-pore large, between prostomium and somite I. Pro- 



