84 CALIFORNIA ACADEMY OF SCIENCKS. 



That the glandular crop really exists in P.Marionis is evident from Perrier's drawing 

 (fig. 22, pi. xvi), though I cannot accept the epithelial nature of the cells. Perrier 

 says nothing of the ])lace from which this drawing is taken, but I suspect that it was 

 from a section of the intestine between the tubular and sacculated parts, similar as in 

 P. Ilichaelseni. 



LITERATURE. 

 Beddakd, Fr. E. Abstract on Some luvestigations into the Structure of the Oligochseta. Ann. Mag. Nat. Hist. 



Jan., 1891, p. 96. 

 Beddard, Fr. E. Some New or Little Kuowu Oligochaita. Proceedings of the Royal Physical Society, Edinburgh, 



June 13, 1893. 

 Beddard, Fr. E. On the Anatomy of Ocuerodrilus. Proe. Royal Society of Edinburgh, vol. xxxvi, p. 563. 

 MicHAELSEN, W. Terricolen der Berliner Zoologischen Sammluug II, page 14. 

 Benham, W. B. An Attempt to Classify Earthworms. Quarterly Journal of Microscopical Science, vol. xxxi, 



part ii, page 243, etc. 

 Rosa, Daniele. Sui Geueri Poutodrilus, Microscolex, e Photodrilus. Boll. Mus. Torino, vol. iii. 

 Rosa, Daniele. Die Exotischeu Terricolen des K. K. Naturhist. Wien. Aunal. K. K. Nat. Hofmus. Wieu, Bd. vi, 



p. 387. 

 Eisen, G. Anatomical Studies on New Species of Ocnerodrilus. Proc. Cal. Acad. Sci., ser. 2, vol. iii. 

 EiSEN, G. Anatomical Structure of Two Species of Kerria. Proc. Cal. Acad. Sci., ser. 2, vol. iii. 

 Perrier, Edmond. Etudes sur I'Orgauisatiou des Lombriciens Terrestres. IV Poutodrilus. Archives Zoologie 



Experimental, vol. ix, pages 175 to 248, pi. xiv. to xviii. 



Eclipidrilus frigidus Eisen. 



Through the kindness of a friend traveling in Bierra Nevada I have received a 

 small number of specimens of this interesting oligochfeta, but unfortunately all the 

 specimens were in a poor state of preservation and much macerated. However 

 I was enabled to make several very nearly continuous series of sections and thus settle 

 several very important points in the anatomy of this worm. My former study of the 

 species was entirely dependent on dissection, which could not possibly reveal all the 

 details of this minute species, especially as regards the spermducts, the presence of 

 which I am now able to demonstrate. My present researches show that the species 

 is less erratic in its anatomy than I first supposed, while again in many respects it 

 differs strangely from its nearest allies, the various genera of LumbricuHdpe. For 

 the present I retain the family of Eclipidrilidiie, but not on the same grounds as 

 formerly, and I now consider it rather as a subfamily to Lumbriculidte than one 

 standing isolated, however with strong leaning towards Moniligaster. 



The generative organs are situated as follows: 



Testes, two pair. The anterior pair attached to the anterior septum of somite 

 ix. The posterior pair similarly to the anterior septum in somite x. 



Ovary, one pair attached to the anterior septum of somite xi. 



Oviduct in xii, opening in front of the inner pair of sette. 



Sjjermathecre, one pair in ix opening posterior to the sette and near the posterior 

 septum. 



Atrium and prostate, one pair opening in x, posterior to the inner pair of setfe. 

 This organ, which is very long, occupying seven to eight somites, consists of three 

 parts, first, one anterior atrium and prostate proper, second, a thin and narrow part 



