190 



Lamborn (W. a.), a Protozoon Pathogenic to Mosquito Larvae. — 



Parasitology, Cambridge, xiii, no. 3, August 1921, pp. 213-215. 



The discovery of a Protozoon [see next paper], in the gills of the 

 larvae of Stegomyia albopicta, Skuse {sciitellaris, Theo.) is recorded 

 from the Malay States. In most cases the organisms were restricted 

 to the gills, but in some they had pervaded the body cavity, the 

 head and even the interior of the antennae. They escape from the 

 mosquito larva while it is still alive by the rupture or complete 

 separation of the gills. The larvae are apparently not greatly affected 

 by the loss of one gill ; occasionally individuals were found that had 

 lost all four. The larvae all died before pupation. Healthy larvae 

 placed with the infected dead ones sometimes became attacked, but 

 not until three months after the death of the original infected 

 individuals. 



Keilin (D.). On a New Ciliate: Lamhomella stegomyiae, n.g., n. sp.» 

 parasitic in the Body-cavity of the Larvae of Stegomyia scutellaris, 

 Walker (Diptera, Nematocera, Cuhcidae). — Parasitology, Cambridge, 

 xiii, no. 3, August 1921, pp. 216-224, 6 figs. 



The organism recorded in the preceding paper is described as Lam- 

 bornella stegomyiae, gen. et sp. n. Infection is probably acquired by 

 ingestion. It is likely that parasitic cihates undergo a process of 

 multiplication within the cyst-wall, and that only those cysts that are 

 filled with young cihates capable of penetrating the walls of the 

 alimentary canal of the host are infective when ingested by the latter. 

 This would account for the delayed infection obtained. 



A list of ciliates parasitic in insects and Arthropods in general is 

 appended. 



Keilin (D.). On a new Type of Fungus: Coelomomyces stegomyiae, 

 n.g., n. sp., parasitic in the Body-cavity of the Larva of Stegomyia 



sciitellaris. Walker (Diptera, Nematocera, Culicidsie).^ Parasitology, 

 Cambridge, xiii, no. 3, August 1921, pp. 225-234, 7 figs. 



During the examination of larvae of Stegomyia albopicta, Skuse 

 {scutellaris, Theo.) for the presence of Lambornella stegomyiae [see 

 preceding paper], several individuals were found to be infected with a 

 fungus here described as Coelomomyces stegomyiae, gen. et sp. n. A 

 list of the parasites of mosquitos recorded by various authors is given. 



VAN LoNKHuijzEN (J. J.). Considerations on the Task which the 

 Provincial Council of Cheribon might undertake for improving 

 the Hygienic Conditions in that Province. — Meded. Burg. Geneesk. 

 Dienst. Ned.- Indie., Batavia, x, 1920, pp. 51-75. (Also in Dutch.) 



Malaria is said to be one of the most important diseases in the 

 province of Cheribon, which has a coast-hne of 104 miles. At the 

 present time the difficulties of antimalaria work in Java are almost 

 insurmountable. There is nothing Hke a complete knowledge of the 

 species of Anophelines concerned, of the biological conditions on which 

 they depend, or of their flight-radius. The problem requires to be 

 dealt with by the Java Civil Medical Service with the co-operation of 

 the local authorities. Various points requiring the attention of the 

 latter, not only as regards malaria but sanitation in general, are dealt 

 with. 



