560 SUMMAKY OF CUKRENT RESEARCHES RELATING TO 



Platyhelminthes. 



Cestodes from Poultry.* — John E. Gutberlet describes the structure 

 of Choanotaenia infuadihuliformis (Goeze) from chickens. He corrobo- 

 rates his previous demonstration of the occurrence of the intermediate 

 stage of this tapeworm in the common housefly {Miisca domestica). 

 The adult and cysticercoid stages are now dealt with, and four other 

 species occuring in chickens — Davainea tetrmjona, D. echinobothrida, 

 D. cesticiUm, and HymenoUpis carioca. There are minute booklets on 

 the suckers and on the entire surface of the scolex of Choanotaenia 

 infundibidiformis. The blind tube which forms the uterus grows, 

 forms pockets, and divides into small compartments. In Davainea 

 tetraijona the genital pores are irregularly alternate in the proglottids. 

 The hooks on the rostellum of D. cesticillus vary from 8 to 12 /a. The 

 uterus appears as a solid cord of cells which becomes hollow, forms 

 pockets, and fills the whole proglottis. 



Dipylidium caninum in Infant. f— Maria Paz Mendoza-Guazon , 

 gives an account of a case of this tapeworm in the small intestine of an 

 infant from Manila. The proglottids have a characteristic resemblance 

 to melon seeds. The usual host of the tapeworm is dog or cat ; the 

 intermediate host is the louse or flea of dog or cat. Man is infected by 

 being licked by the dog or cat, or from milk which the cat has licked, or 

 by accidental ingestion of the intermediate host. Children are infected 

 by putting their licked fingers into their mouths. 



New Frog Trematode.| — Sadao Yoshido describes Enodiotrema 

 rwiocaudatum sp. n., a small Distome from the intestine of Rana 

 nigromacidata. It differs from the known species of the genus in the 

 structure of the excretory system and cirrus-pouch and the large 

 number of yolk-foilicles. 



New Japanese Triclads.§ — Isao Ijima and Tokio Kaburaki 

 describe a number of new Triclads and figure the reproductive organs. 

 There ai'e three new species of Procerodes, two of Bdellocephala, four of 

 Planaria, two of Polycelis, and one of Sorocelis. 



Incertae Sedis. 



New Phase in Life-history of Dicyemid8B.|| — Aug. Lameere has 

 inquired into tiie infection of cuttle-fishes with Dicyemids. It is not 

 effected by the infusoriform phase, nor by the primary nematogenous 



* Trans. Amer. Micr. Soc, xxxv. (1916) pp. 23-44 (4 pis.). 

 t Philippine Journ. Sci., xi. (1916) pp. 19-30 (3 figs.). 

 X Annot. Zool. Japon, ix. (1916) pp. 73-9 (1 pi.). 

 § Annot. Zool, Japon, ix. (1916) pp. 153--71 (24 figs.). 

 II Comptes Rendus, clxiii. (1916) pp. 16-18. 



