. Annals of tropical medicine and parasitology. Parasites. 293 ANCYLOSTOMES IN ANIMALS IN FREETOWN BY S. ABLER From the Sir Alfred Lewis Jones Research Laboratory, Freetown, Sierra Leone {Received for publication '^'iJuly, 1922) Yorke and Blacklock (1915) found that dogs in Freetown were heavily infected with ancylostomes. The species found were A. caninum (Ercolin, 1859) and A. ceylanicum (Looss, 1911), which were present in the intestines in about equal numbers. During April, 1922, a number of dogs collected from various parts of Freetown were examined in the Laboratory. It was noted that in
. Annals of tropical medicine and parasitology. Parasites. 293 ANCYLOSTOMES IN ANIMALS IN FREETOWN BY S. ABLER From the Sir Alfred Lewis Jones Research Laboratory, Freetown, Sierra Leone {Received for publication '^'iJuly, 1922) Yorke and Blacklock (1915) found that dogs in Freetown were heavily infected with ancylostomes. The species found were A. caninum (Ercolin, 1859) and A. ceylanicum (Looss, 1911), which were present in the intestines in about equal numbers. During April, 1922, a number of dogs collected from various parts of Freetown were examined in the Laboratory. It was noted that in ten young dogs, two to three months old, A. caninum was constantly present, but no specimens of A. ceylanicum were found. An examination of ten adult dogs showed, however, that A. ceylanicum was present in eight and A. caninum was present in. Fig. I. Two specimen! of Ancylostoma caninum attached to segments of Dipylidium caninum. every case. It was observed that in dogs A. ceylanicum occurs in greatest numbers at a higher level of the intestine than A. caninum. In one dog examined a specimen of A. caninum was found attached to the mucosa of the large intestine, two inches below the caecum. Three instances of hyper-parasitism were observed in which. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Liverpool School of Tropical Medicine. Liverpool University Press [etc. ]
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