ZOOLOGY AND BOTANY, .MICROSCOPY, ETC. 49 



grandis, a parasite which in many features resembles a Nematode — 

 perhaps a larval form of some already recognized species. But the 

 entire absence of reproductive structures made it impossible to attempt 

 a classification. 



Platyhelminthes. 



Dipylidium caninum in a Child.* — W. A. Riley reports the occur- 

 rence of this tapeworm in a boy at Ithaca. It is more generally known as 

 Taenia canina, or T. cucumerina, or T. elliptica, and sixty-two cases have 

 been recorded, mostly in children. The intermediate hosts are the dog- 

 louse, Trichodectes canis, and the flea Ctenocephalus canis. Man may 

 accidentally ingest one of these insects, and the parasites are able to 

 complete their development in the unusual host. 



Tapeworms of South American Felidse. | — M. Liihe finds that 

 Taenia oligarthra Dies, from Felis concolor is nearly allied to T. echino- 

 coccus v. Sieb., and that Cysticercus macrocystis Dies, from Lepus brasi- 

 liensis is the bladderworm stage of a new tapeworm, T. macrocystis 

 (Dies.) from species of Felis. He also describes T. omissa sp. n. from 

 Felis concolor and other species of Felis. 



New Tapeworm in Chicken. % — Georgina Sweet describes Davainea 

 variants sp. n. from chickens in Melbourne. It is superficially very like 

 D. proglottina, and in some respects it suggests a combination of features 

 of D. proglottina and of D. echinobothrida. Two other species of Davainea 

 and Ghoanotaenia infundibulum are reported. 



Parasites from Irish Sea Fishes.§ — James Johnstone deals with 

 Lebouria idonea Nicoll from a common dragonet, Prosthecobothrium 

 dujardinii (van Beneden) from the skate, and Echeneibothrinm variabile. 

 He discusses the genus Echeneibothrinm, which is defined by the pre- 

 sence of four Echeneif orm bothria carried on contractile pedicels ; by the 

 absence of any armature of the bothria ; and by the presence of a con- 

 tractile myzorhynchus, at the apex of which there is a terminal " os." 



Entozoa from Clyde Fishes. || — W. Nicoll describes Peracreadium 

 genu (Rud.) from Labrus berggylta, P. commune (Olsson) from the same, 

 Lebouria varia sp. n. ( = {Lebouria} alacris (Lss.) Nicoll) from the drago- 

 net, Helicometra pulchella (Rud.) from Labrus berggylta and the conger, 

 Pharyngora bacillaris (Molin) from Scomber scombrus, Prosorhynchus 

 aculeatus Odhner from the conger, and a number of other Trematodes. 

 Adult forms of Bothriocephalus bipunctalus Zeder were found : Cottus 

 scorpius and Abothrium rugosa (Goeze) in the pollack. The first is 

 frequent in the turbot, the second is a typical gadoid parasite. The so- 

 called Scolex polymorphic was common — a composite form that includes 

 the larvse of several species of Calliobothrium. 



* Science, xxxi. (1910) pp. 349-50. 



t Zool. Jahrb., 1910, Suppl. 12, Heft 3, pp. 687-710 (2 pis. and 8 figs.). 



J Proc. R. Soc. Victoria, xxiii. U910) pp. 243-56 (5 pis.). 



§ Proc. and Trans. Liverpool Biol. Soc.xxiv. (1910) pp. 78-99 (10 figs.). 



|| Parasitology, iii. (1910) pp. 322-59 (1 pi.), 



Feb. loth, 1911 e 



