LIFE-HISTOET OF PILAEIA BANCROFTI. 365 



the name of Lewis will henceforth tower above all others in this 

 connexion, and Bancroft would, I am sure, be the last to dispute 

 the well-earned prerogative of Lewis. If my record is approxi- 

 mately correct, the dates of discovery will stand pretty much as 

 follows : — 



.1. "WuCHEEEE, 1866. — Probably embryos of Strongylidge 

 (Leuckart) ; Vers du Bresil (Wucherer ; Davaine) ; Filaria 

 wuchereri, suggested, conditionally, in this memoir (Cobbold). 



2. Salisbuey, 1868. — Trichina cystica (Salisbury) ; nem.atode 

 eggs and embryos (Cobbold). 



3. Lewis, 1870. — Worms that seem to belong to the Mlarid(B 

 (Busk). 



4. Cobbold, 1870. — Embryos of a minute nematode supposed 

 to infest the urinary passages. 



5. Ceevaus and Silya Lima, 1871 (?). — Vers de la Gruadeloupe 

 (Crevaux; Davaine). 



6. CoEEE, 1872. — L'helminthe dans les urines hematochy- 

 leuses (Corre). 



7. Lewis, 1872. — Filaria sanguinis Jiominis ; hematozoon 

 (Lewis). 



8. roKCEEYiNEs, 1873 (?). — Les embryons d'un ver nema- 

 toide (E-obin). 



9. SoNSiNO, 1874. — Un nematode microscopico a guisa di 

 Anguillula (Sonsino). 



10. O'Neill, 1875. — Filariose dermathemica, from craw-craw 

 (O'Neill; Silva-Lima). 



11. MANS0]sr, 1875 (?). — Filaria worm in connexion with 

 chyluria, &c. (Manson). 



12. Bakceoet, 1876 (spring of). Filarice from human blood 

 (Bancroft; Eoberts ; Cobbold). 



13. Banceoft, 1876 (winter of). — Filaria hancrofti (Cohhold). 



14. Lewis, 1877. — Filaria sanguinis Jiominis ; mature (Lewis). 



15. Da Silya Lima, 1877. — Filaire de Wucherer (Silva Lima; 

 Dr. Le Eoy de Mericourt). 



16. Mansos", 1877. — Filaria sanguinis Jiominis (Manson). 



17. Makson, 1878. — Filarice in the stomach of Mosquitos 

 (Manson) ; the higher larval states of the Filarice of Wiicherer, 

 Lewis, and Bancroft (Cobbold). 



The above is the nearest approximation to a correct chrono- 

 logical record that I can offer. With one or two exceptions the 

 dates refer to the actual periods of discovery. In the exceptional 



