224 
Lambornella stegomyiae 
2. Collinia branchiarum (Stein, 1852) Cepede 1910, parasitic in the gills 
of Gammarus pulex. 
3. Collinia neoniphargi Cepede 1910, parasitic in the circulatory system of 
N eoniphargus moniezi. 
4. Collinia circulans (Balbiani, 1885) Cepede 1910, parasitic in the body- 
cavity of Asellus aquations. 
5. Perezella pelagica Cepede 1910, parasitic in the body-cavity of Copepoda 
(Calanidae), Clausia elongata Boeck., Acartia dlausi Giesbrecht, and 
Paracalanus parvus Claus. 
6. Uronema rabaudi Cepede 1910, parasitic in the body-cavity of Clausia 
elongata and Acartia clausi, also in the dead bodies of these forms. 
7. Nyctotherus sp. ? in the hind-gut of Blatta, Gryllotalpa , and Hydrophilus 
adults, and the larva of Oryctes; also in lulus (Myriapoda) (see Biitschli, 
1899, p. 1721). 
8. Lambornella stegomyiae , n.gen., n.sp., parasitic in the body-cavity of the 
larva of Stegomyia scutellaris Walker. 
VIII. References. 
Balbiani, E. G. (1885). Sur un Infusoire Cilie parasite du sang de l’Aselle aquatique 
( Anoplophrya circulans). Recueil Zoologique Suisse, n. 276-303, PI. XI. 
Cepede, C. (1910). Recherches sur les Infusoires Astomes, Anatomie, Biologie, Ethologie 
parasitaire, Systematique. Arch. Zool. Exper. et Gener. 5 e serie, in. 341-609, Pis IX— 
XVII. 
Howard, L. O, Dyar, H. G. and Knab, F. (1912). The Mosquitoes of North and Central 
America and the West Indies. Washington, Carnegie Institution, i. 157-161. 
Lamborn, W. A. (1921). A Protozoan pathogenic to Mosquito Larvae. Parasitology , xrn. 
213-215. 
