356 SUMMARY OF CURRENT RESEARCHES RELATING TO 



Determination of Human Entozoa.* — Henry B. "Ward deals especi- 

 ally with the Trematoda, such as Cladorchis watsoni, Fasciola gigantica, 

 Fasciolopsis busTcii. 



New Intestinal Trematode of Man.j — Philip E. Garrison describes 

 Fascioletta ilocana g. et sp. n., a small fluke, 4-6 mm. in length, from 

 the intestine of Filipinos. In addition to its small size, the new 

 parasite is remarkable for the large prominent ventral sucker, and for 

 the general contour of the body, which is broadest in the region of the 

 acetabulum, and tapers posteriorly throughout fully two-thirds of its 

 length. 



Tapeworms in Grouse.^ — A. E. Shipley discusses Davainea urogalli 

 Modeer from the small intestine of the grouse. " It frequently pro- 

 trudes from the hinder end of the alimentary canal and sometimes 

 trails like a pennant behind a bird that is flying." He has not found 

 that it causes serious trouble, but a closely allied species, D. echinobothrida, 

 causes the so-called " nodular disease " of the intestine so fatal to 

 poultry. 



A second tapeworm in the grouse is Hymenolepis microps Diesing, 

 which lives in countless numbers in the duodenum, though unrecog- 

 nisable when alive. It is quite transparent, but if corrosive sublimate 

 be added, it appears as a fine opaque thread, sometimes 15 cm. in 

 length, with a large number of proglottides. 



Trisenophorus nodulosus.§ — A. E. Shipley records the larval form 

 of this tapeworm from the liver of a perch caught in the Norfolk 

 Broads. Cysts of this larva have been found in the pike (the normal 

 host of the adult), in the grayling, trout, salmon, and pope-fish. Some 

 of the larval forms attain a surprising length. Ordinarily from one to 

 three centimetres long, they have been found encysted in the tail muscles, 

 eight, fifteen, and even twenty-five centimetres in length. 



New Species of Ichthyotaenia.|] — C. Barbieri describes Ichthyotsenia 

 agonis sp. n., found very abundantly in pyloric casca of Alosa finta var. 

 lacustris. On an average there were 1400 parasites in each fish. Yet 

 there seemed to be no resulting mortality. There are some reasons for 

 believing that acephalocystic larvae found in the crustaceans Bytho- 

 trephes and Leptodora are the young stages of this new species of 

 Ichthyotsenia. 



Cestodes of the Dry Tortugas.lf — Edwin Linton reports on numerous 

 Cestodes, including a new genus, Pedibothrmm, represented by three 

 species in the nurse-shark, and a new species of Acanthobothrium, 

 Rhinebothrium, and Rhynchobothrium. In Pedibothrium the body is 

 tenuiform, articulate, with the head separated from the body by a 

 distinct neck, and provided with four distinct, cruciform, armed 



* Trans. Amer. Micr. Soc, xxviii. (1908) pp. 177-200 (1 pi.). 

 t Philippine Journ. Sci., iii. (1908) pp. 385-92 (2 pis.). 

 % Parasitology, i. No. 4 (1908) pp. 263-79. 

 § Tom. cit., pp. 281-2 (1 fig.). 



|| Centralbl. Parasitenk., xlix. (1909) Abtk. i., pp. 334-40 (8 figs.). 

 4 Publications Carnegie Institution, Washington, No. 102, pp. 157-90 (11 pis.). 



