PROTOZOA AND OTHER ANIMALS 



897 



stegomyiae (Fig. 194), found by Lamborn (1921) in mosquito larvae 

 [Stegomyia scutellaris) in an earthenware pot in the Malay States, may 

 actually be this species. All the infected larvae died in a few days; the 

 ciliates escaped while the host was still living or soon after death. 

 Keilin (1921), who described the species from formalin-preserved ma- 



Figure 194. Posterior end of larva of Aedes (Stegomyia) scutellaris parasitized by 

 ciliates, Lambornella stegomyiae Keilin (^Glaucoma pyriformis ?) . (After Keilin, 

 1921.) 



terial, regarded the ciliate as a true parasite, and others have agreed 

 with him, apparently largely because of the epizoic character of the 

 supposed cysts which Keilin found studding the external surface of 

 one mosquito larva. There is no proof that these were cysts of the 

 ciliate- — one may, in fact, be justified in thinking it improbable that 

 they were. If they were not, there seems to be no reason why Codreanu 



