THE ANATOMY OF ONOHOLATMUS VULGARIS, BAST. 147 



Literature referred to. 



1. Bastian. — " Anatomy and Physiology of Nematoids, Parasitic and Free," 



'Phil. Trans. Roy. Soc.,' 18G6. 



2. Bastian. — " Monograph of the Anguillulidae," 'Trans. Linn. Soc.,' vol. 



XXV, 1866. 

 2 a. DuJARDiN. — ' Systema Helniinthuni.' 



3. GoLOWiN. — " Beobaclitungen an Nematoden," II, ' Excretorislies 



A])parat.,' Kasan, 1902. (Summary, ' Zool. Centralblatt,' ix, p. 449.) 



4. HAMAN^f. — ' Centralblatt f. Bakteriologie,' vol. xi, p. 501. 



5. Hamann. — "Die Nemathelminthen," 11, 'Die Nematoden,' Jena, 1895. 



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8. Jammes. — ' Recherclies sur I'Organisation et Developpement des Nema- 



todes,' Tiiesis, Paris, 1894. (Summary, ' Zool. Centralbl.,' Jahrg. i', 

 p. 398.) 



9. JaGeuskiold. — " Beitriige zur Kentniss d. Nematoden," ' Zool. Jahrb. 



Abtheil. Anat. u. Outog.,' Bd. vii. p. 449. 



10. Jagerskiold. — ' Weitere BeiUiige z. Kentniss der Nematoden,' Stock- 



holm, 1901. 



11. Ray Lankester. — ' Treatise on Zoology,' part ii. 



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12. de Man. — 'Auat. Untersuchungen iiber PreilebendeNordsee-Nematoden,' 



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EXPLANATION OF PLATES 7—9, 



Illustrating Dr. F. H. Stewart's paper, " The Anatomy of 

 Oncliolaimns vulgaris, Bast., with Notes on two Parasitic 

 Nematodes." 



Eeference Letters. 



a. c. Acidophil cell. a.^. Anal ganglion, a. L Anterior testis, a.t.r. 

 Anterior testicular region, b. c} Basophil cell in ganglionic collar, b. c? 

 Basophil cell behind collar, h. m. Basement membrane. Ccm. Canal, excre- 



