182 G. E. BODKIN AND L. D. CLEARE, JNR. 



Class NEMATODA. 

 Family Filaridae. 



Filaria cervina, Duj. A single specimen of this parasite was obtained from the 

 abdominal cavity of a cow at the Georgetown Abattoir. It does not appear to be a 

 common species. 



Filaria physalura, Bremser. Some splendid specimens of this large worm were taken 

 from the Collared Kingfisher {Ceryle torquata), a large bird of common occurrence. 

 Several specimens were taken from the connective tissue about the neck, while the 

 heart was enveloped with a large specimen which had coiled itself tightly around 

 this organ. We are indebted for this specimen to Mr. M. A. de Freitas, who secured 

 it while on a collecting expedition in the upper reaches of the Demerara River. 



Filaria immitis, Leidy. It would probably be a difficult matter to find a Creole 

 dog over two years in age which does not harbour this parasite. Dogs about two 

 years old generally possess at least one adult worm in the heart itself or in the 

 pulmonary artery. In old dogs a thick tangled mass of the worms is often found 

 in these organs, which would appear to choke them completely. However, the 

 presence of this parasite seems to have but little effect on the general well-being of 

 the dog. Imported dogs seem to thrive and are not rapidly killed by this worm as 

 has been reported from China. The mosquito, Culexfatigans, Wied., is the probable 

 vector of the disease. 



Filaria sp. Large numbers of a filarial worm were taken from the body cavity 

 of the White-breasted Swallow^ {Tachycineta albiventris). Poor preservation of the 

 specimens rendered an exact determination impossible. 



Family Ascaridae. 



Ascaris megalocephala, Cloquet. One specimen of this large worm was obtained 

 from a horse after the administration of a purgative. 



Family Strongylidae. 



Ankylostoma sp. A common species, resembhng A. ceylanicuni, Loos, in the 

 intestine of most dogs. As many as 15 of these worms have been taken from 

 one dog. 



Physaloptera ? praeputialis, Linst. An exceedingly common parasite in the 

 stomach of most cats. From 4 to 12 of these worms are usually found firmly attached 

 to the stomach wall. Lutz has recorded the occurrence of this parasite in Brazil 



in the same host. 



Class PLATYHELMINTHES. 



Dicorcelium sp., near D. lancealum, Stiles & Hassall. This parasite seems to be 

 extremely prevalent among cats in the colony. At times the liver will be found to 

 be very heavily infested, while in other cases only a few flukes will be found. 



Class CESTODA. 



Moniezia expansa, Rud. This species was taken from a pig at the Georgetown 

 Abattoir. It is not Jiormally a parasite of the pig, but it is possible that in some 

 manner or other the worm as excreted from its original host may have been consumed 

 by this animal, as pigs are notorious eaters of all kinds of refuse and filth. 



