CD. SOAB : NOTES AND OBSERVATIONS ON 



\u, Mills, Lewis. "Hydrachna larvae on Dytiscus marginalia, 

 with figures." Science Gossip, 1865, p. 255. 



1 7. M ; i : er, ' ». F. Hydrochnoe, quas in aquis Daniae palustribus 



• -,-. et. ping. et. Tab. etc. Lipsiae. 1781. 



18. Perez, < n. " Sur les larves d'Hydrachnes." C. B. Soc. Biol. 



Paris, torn. 56, pp. 263, 264. 



19. Rennie & Westwood. Insect Transformation, p. 381. 1830. 



3EL, Vom R. Insect Belustigung, iii. Teil, Taf. 24, p. 149. 

 N"iirnberg. 1755. 



21. Si berren, Henry. "Hydrachna globulus. Duges,in the Fat 



Body of Dytiscus.''' Natural Science, vol. viii., May, p. 360. 

 1896. 



22. [bid. Through a Pocket Lens, p. 113. 1S97. 



Sergent, Edmond, & Etienne Sergent. " Hyclrachnidae 

 parasitic on Anopheles." C. B. Soc. Biol. Paris, tom. 56, 

 pp. lon-102. 1904. 



2 1. Soar. C. D. " Note on the Occurrence of Living Hydrachnid 



I . rvae in the Stomach of a Trout." Journ. Quekett Micr. 

 Club, ser. 2, vol. 8, p. 463, 4 figs. 1903. 



25. [bid. " Xote on the Occurrence of Larval Water-mites on 



Various Agnatic Animals." Journ. Quekett Micr. Club, 

 ser. 2, vol. 8, pp. 65, 66, 1 fig. 1901. 



26. [bid. " Some Notes on Hydrachnidae." Journ. Quekett Micr. 



< 'lub, ser. 2, vol. 6, pp. 318—321. 1897. 



27. Thon, P. 0. ( arl. "Ueberein interessantes Beispiel des 



Parasitismus, bei den Hydrachniden." Verh. Zool.-bot. 

 . M7, ,,.. Bd. 49, pp. 484, 485. 1899. 



Explanation of Plates 26 — 30. 



Plate 26. 



a. A sprig of A nacharis. 



b. Eggs of Piona longipalpis, Kren., deposited on upper-side of 



leaf. April 28th, 1904. 



c. I >itto, lateral view. 



f1 - Ti selected for examination, May 2nd, 1904. 



e tn '■ ' "«• drawn every other clay until May 15th, when 



they hatched out. 



