NO. 225S TAENIOID CESTOUFJS OF DOGS AND CATS— HALL. 49 



Hosts. — Primary : Canis familiaris. Secondary : Capra hircus. 



Location. — In small intestine of primary host. In central nervous 

 system, liver, lungs, spleen, kidney, bladder, internuiscuhir connective 

 tissue, under peritonemn and subcutaneous in secondary host. 



Locality. — India (Punjab, at Lahore, and Bengal) and Ceylon. 



Type-material. — IJ. S. National Museum No. 16590. (Bureau of 

 Animal Industry Helminthological Collection.) 



Life Justory. — Eggs produced by the adult worm in the primary 

 host pass out and are ingested by the secondary host in contaminated 

 food and water. In the digestive tract the embryo escapes from its 

 shell and migrates into the tissues of the host, where it develops into 

 a coenuriform larva. On ingestion of this larva by the primary host, 

 some or all of the heads attached to it may give rise to strobilate 

 worms in the intestine. 



Gaiger (1907) first recorded this parasite from the goat at Lahore, 

 India. He had two cases of the larval parasite occuring in the con- 

 nective tissue, and because of the site of the worm and the presence 

 of what ho regarded as daughter cysts, he concluded that the para- 

 site was Multiceps serialis^ the form commonly found in the connec- 

 tive tissues of the rabbit, rather than M. multiceps., the form com- 

 monly found in the central nervous system of ungulates. He fed 

 some cyst material to a dog and to a rat. The rat died in two days 

 and the hooks were recovered from the stomach. The dog began pass- 

 ing segments of tapeworm on the fourteenth day and was killed on the 

 thirty-first day. The small intestines were found packed with tape- 

 worms from 1 to 40 cm. long. 



Two years later, Dey (1909) reported (his parasite from the goat 

 in Bengal, India. In this case the parasites were found in the brain, 

 intermuscular connective tissue, in subcutaneous situations, and in 

 the mesenteries and att?.ched to the peritoneum of the abdominal wall 

 and the serous covering on the viscera. A dog was first treated with 

 taeniacides and purgatives and then fed some cyst material. In a 

 month and a half the dog began passing segments of tapeworm and 

 and was killed two weeks later. Seventy-five tapeworms, the longest 

 1.82 meters long, were recovered from the small intestine, and the 

 scolices found to agree with those of the coenurus. 



Southwell (1912) reports Coenurus serialis from the goat and 

 Taenia serialis from the dog in Ceylon. The record from the goat 

 must be regarded as a record of M. gaigeri, and that from the dog 

 may be. 



Gaiger (1915) lists it from the goat in India with a note to the 

 effect thnt it is common. 



In a previous paper (Hall, 19105), Gaiger's and Dey's records of 

 31. s-erialis from the goat were provisionally accepted as correct, with 

 6205.5— 20— Proc.N.M. Vol .55 5 



