site was apparently first published by Marzocchi of Turin in 
1911 (Pathologica, III, N° 62). However, .the parasite has been 
seen by several workers, ineluding Nôller, in different countries 
and is already named Herpetomonas ctenocephali. This name was 
proposed by me at the meeting of the Tropical Section of the 
British Medical Association held in Liverpool last July. I gave 
the spécifie name Ctenocephali to the parasite in mv paper eivtit- 
led (( Some Insect Flagellâtes and the Problem of the Transmis¬ 
sion ot Leishmania ». The paper was read on July 25th, 1912 and 
published in abstract in several journals a few days later. The 
full paper was published on November 2nd, 1912 in the British 
Medical Journal, N° 2705, pages 1196-1197. The paper was sum- 
marized in the Tropical Diseuses Bulletin, N° 7, page 557, pu¬ 
blished Feb. iqth, 1913. The occurrence of the parasite has also 
been recorded by Wenyon in bis recent publications. 
I first saw rounded (pre-flagellate) forms of Herpetomonas cte¬ 
nocephali in Cambridge in 1908. At varions times since I hâve 
again found the Herpetomonaid in dog-fleas, and hâve seen its 
early flagellate stages. More recently I hâve observed the fui 1 v- 
grown flagellate forms. For example, in the autumn of 1911 I 
found 3 infected dog-fleas ont of 68 examined, and hâve since 
observed 5 infected fleas out of 48 examined. 
I may say that I ne ver considered that H . ctenocephali had any 
relation to Leishmania infant uni, which does not occur in dogs in 
Ifngland. The blood of the dogs harbouring the infected fleas 
was examined for Leishmania and other parasites in every case, 
but always with négative results. 
It is quite possible that it may be shown ultimately that the 
Herpetomonas of the dog-flea is the same as Herpetomonads oc- 
curring in varions other inseots, in which case its spécifie name 
may hâve to be changed, but in any case the spécifie name 
pseudoleishmania of Brumpt has not priority. 
(Liverpool School of Tropical Medicine, 2 april, 1913 .) 
Résumé. — L’auteur fait remarquer que le flagellé de l’intestin 
des puces du chien, nommé par Brumpt Herpetomonas pseudo- 
leishmania, a été désigné préalablement par lui sous le nom de 
H. ctenocephali. 
