﻿540 GARRISON. 



Taenia solium Linnaeus, 1758. Two specimens of the pork tapeworm 

 were obtained from native prisoners in Bilibicl. Although the scolex 

 was absent from each specimen, the size of the strobike, the massive 

 uterine branches, not more than fifteen in number, the "third ovarian 

 lobe" cut off by the vagina and the absence of extreme lengthening of 

 the terminal segments seemed to render the diagnosis reasonably certain. 



The proportion of the number of specimens of Tccnia saginata (26) 

 to the number of specimens .of Tcenia. solium (2) here reported would 

 seem to indicate with fair probability that the former is the much more 

 prevalent of the two species; however, further work is necessary before 

 the relative frequency of infection by these two species can be established 

 with even approximate accuracy. 8 



HYMEXOLEPIS. 



Five infections with this genus have come to our attention, one in a 

 native child under the professional care of Surgeon D. X. Carpenter, 

 United States Xavy, at Cavite, and four in adult males at Bilibid Prison, 

 one of whom was Chinese and the others native. Parasites were recov- 

 ered from two of the latter cases after treatment. Specific diagnosis 

 of the child's infection was made, it is believed, with fair certainty, from 

 the ova. 



Hymenolepis nana (Siebold, 1852) Blanchard, 1891. One undamaged 

 specimen of this species was taken from one of the Bilibid prisoners. 

 The size of the ova obtained from Dr. Carpenter's case (from 40 by 

 35 /x to 57 by 42 fi, outer shell) and the absence of a granular layer 

 between the outer and inner shells seemed fairly safe evidence that the 

 infection was with H. nana rather than with H. diminuta. A careful 

 study of the ova was not made in two of the infections with Hymenole- 

 pis and worms could not be secured. 



It must be borne in mind in forming a judgment from the cases here 

 reported regarding the frequency of infection with the dwarf tapeworm 

 in the Islands, that in other countries Hymenolepis nana has appeared 

 to show a marked tendency to infect children more frequently than 

 adults 9 and that our work has been almost exclusively with the latter. 



s The results of meat inspection in Manila by the Bureau of Agriculture show 

 a much higher percentage of cystieercosis in hogs than in cattle and I was led 

 to expect a correspondingly greater prevalence of the pork tapeworm. However, 

 I have been informed by Dr. Moberly, chief veterinarian, that most of the animals 

 slaughtered in Manila are imported, nearly all of the native hogs and cattle 

 being killed in the provinces, where meat inspection has not yet been established. 

 The results of inspection, therefore, are not indicative of the relative prevalence 

 of Cysticercus cellulosae and of C. bovis in native animals. 



°Cima, Francesco: Pediatna Xapoli (1893), 1 , 39 ; Ibid. (1S96), 4, 303; 

 Ransom. Brayton H. : Bull. Hyg. Lab., U. 8. Pub. Health & Mar.-Hosp. Serv., 

 Wash. (1904). Xo. 18, 61; Stiles. Oh. Wardell, and Garrison. Philip E.: Ibid. 

 (1900), Xo. 24, 24. 



