XLviii NOTES ET REVUE 



body of his parasite is différent, there are no myonemes and no 

 epimerite is mentioned, nuclear détail is also wanting, the stages 

 of sporogony are incomplète and schizogony is not mentioned. 

 There is also a difl'erence in the liost. It clearly follows from thèse 

 considérations that the parasite with which I liave been dealing is 

 not the same as that described by Giard. 



Another interesting l'eatiire is that Merogregarina itself harbours 

 a small parasite, which bas a gênerai resemblance to Chglridiopsis, 

 and is possibly related to the Haplosporidia. It is foiind beneath 

 the ectoplasm in the neighbourhood of the nucleus. 



Thèse and other points, more especially the systematic position 

 of Merogregarina, will be more fully disciissed, together with 

 illustrative figmuîs, in a memoir on the subject, which I hope will 

 be published soon. As I bave already been working on this 

 Schizogregarine for over a year, and several important memoirs 

 (1, 2, 5, 6) on the group Schizogregariuae bave lately appeared, 1 

 considered it would be advantageous to other workers on the group 

 to prépare this preliminary note. 



Références to Literature. 



(1) Brasil (L.). 1907. — " Recherches sur le Cycle évolutif des Seleni- 



diidae. Grégarines parasites d'Annelides polychèles. I. La schizo- 

 gonie et la croissance des gamétocytes chez Selenidium caulleryi, 

 n. sp. " {Arch. f. Protistenkunde, Rd. VIII, pp. 370-397, 1 pi.). 



(2) Brasil (L.) et Fantham (II. -B.). 1907. — " Sur l'existence chez les 



Sipunculides de Schizogrégarines appartenant à la famille des 

 Selenklildae " [C. R. Acad. ScL, Paris, t. 144, pp. 518-520). 



(3) Caullery (M.) et Mesnil (F.). 1898. — " Sur une Grégarine cœlo- 



mique présentant dans son cycle évolulif une phase de multipli- 

 cation asporulée " (C. R. Soc. BioL, Paris, v. 50, p. 65). 



(4) LÉGER (L.). 1900. — " Sur un nouveau Sporozoaire des larves de 



Diptères (Schizocystis)". (C. R. Acad. Sci., Paris, t. 131, p. 722). 



(5) Léger (L.). 1907.— "Les Schizogrégarines des Ti'achéates. I. Le genre 



Opkryocyst.is {Arck. f. Protistenkunde, Bd. VIII, pp. 159-202, 4 pis). 



(6) LÉGER (L.) et DuBOSGQ (0.). 1908. — " L'évolutiou Scliizogonique de 



VAgijregata [Eucoccidium] eherthi (Labbé) {Arch.. /'. Protistenkunde, 

 Bd. XII, pp. 44-108, 3 pis). 



(7) Schneider (A.). 1883. — " Ophryocystis biitschlii, n. sp. " (('. R. Acad. 



Sci., Paris, t. 96, p. 1378). 



Paru le -25 Octobre I90S. 



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