AN ICHTHYOBDELLID PARASITIC ON SAND WHITING. 37 
here, gave me great assistance with photographs of the living 
specimens. 
Literature. 
1. Moquin-Tandon, A. (1846). — * Monographie de la famille dea 
Hirudinees.’ Paris. 
2. Bourne, A. G. (1884). — “ Contribution to the Anatomy of the 
Hirudinea,” ‘ Quart. Journ. Micr. Sci.,’ vol. 24. 
3. Whitman, C. O. (1891). — “Description of Clepsine plana,” 
‘Journal of Morph.,’ vol. iv. 
4. Oka, Asajiro (1894). — “ Beitrage zur Anatomie der Clepsine,” ‘ Zeit, 
Wiss. Zool.’ Bd. lviii. 
5. Johansson, L. (1896a). — ‘ Bidrag till Kannedomen om Sveriges 
Ichthyobdellider.’ Upsala. 
6. (18966). — “ fiber den Blutumlauf bei Piscicola und Callob- 
della,” 4 Festskrift Lilleborg.’ Upsala. 
7. (1898). — “Einige systematisch wichtige Theile der inneren 
Organisation der Ichthyobdelliden,” ‘ Zool. Anzeiger,’ Bd. xxi. 
8. Kovalevsky, A. (1900). — “ I^tude biologique de l’Hsementeria 
cos tat a Muller,” ‘Mem. Acad. St. Petersbourg (8) Cl.,’ phys. 
math.,’ vol. xi. 
9. (1900). — “ Plienomenes de la Fecondation chez l’Helob- 
della algira (Moquin-Tandon),” ‘Memoires de la Societe 
Zoologique de France,’ Tome xiii. 
10. Brumpt, E. (1900). — “Reproductions des Hirudinees,” ibid., 
Tome xiii. 
11. Oka, Asajiro (1902). — “ Uber das Blutgefasssystem der Hiru- 
dineen,” ‘ Annot. Zool. Japon,’ vol. iv, part 2. 
12. (1904). — Ueber den Bau von Ozobranchus,” ‘Annot. Zool. 
Japon,’ vol. v. 
13. Salensky, Yon. W. (1906). — “Zur Kenntnis des Gefasssystems der 
Piscicola,” ‘ Zool. Anzeiger,’ Bd. xxxi. 
14. Johansson, L. (1911). — “ Hirudinea, Die Fauna Sudwest-Australiens, 
Hamburger Sudwest-Australischen Forschungsreise, 1905.” 
Michaelsen und Hartmeyer, Bd. iii. 
15. Sukatschoff, B. W. (1912). — “Beitrage zur Anatomie der Hiru- 
dineen. 1. Uber den Bau von Branchellion torpedinis 
Sav.,” ‘ Mittheil. Zool. Station, Neapel,’ Bd. xx. 
16 . Hemingway, E. E. (1912). — “Anatomy of Placobdella para- 
sitica,” ‘Geol. and Nat. History Survey, Minnesota,’ Zool., 
series v. 
