ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 471 



New Cestodes from Ceylonese Fishes.* — T. Southwell describes 

 nine new species, two of which require new genera, which are named 

 Phyllobothroides and Cyclobothrium. In the former the head has four 

 simple, undivided leaf-like bothridia which are slightly concave, and 

 overhanging the proximal part of each bothridium there is a pair of 

 hooks. In the other new genus, the head is shaped like a daisy, with a 

 central myzorhynchus bearing a pair of suckers, and surrounded extern- 

 ally by a frill of about fourteen long, hollow, unbranched, digitate sucker- 

 like tentacles, arising from the base of the myzorhynchus. 



New Tapeworm from a Duck.f — T. B. Rosseter describes Hymeno- 

 Jepis upsilon sp. n. from a wild duck (Anas boschas). He compares it in 

 detail with Taenia microsoma Creplin, which it resembles in some respects. 

 In the penultimate and ultimate segments the ripe ova or hexacanth 

 embryos are contained in a U-shaped ovarian-uterine sac, like a Greek 

 upsilon. This form of uterine sac does not occur in any other tape- 

 worm from birds. 



Cysticercoids from Rat-flea.:}: — W. Nicoll and E. A. Minchin have 

 found two cysticercoids in the. cavity of the rat-flea (Ceratophyllus fasci- 

 atus). One was the larval form of Hymenolepis diminuta Rud. ( = Taenia 

 leptocephala Creplin. The other was perhaps the larval form of Hymeno- 

 lepis marina, which may turn out to be the same as H. nana, a dangerous 

 tapeworm of man. 



Gasterostomum tergestinum.§ — W. Nicoll gives a re-description of 

 this species, which has not been seen since Stossich described it in 1883. 

 The chief distinctive feature of the species is the position and arrange- 

 ment of the yolk glands, two symmetrically situated masses on the level 

 of the anterior border of the pharynx and close to it. In most Gastero- 

 stomata they are disposed along the margins of the body. 



Horse Parasites in Cameroon. || — Berke describes the case of a horse 

 in Cameroon reduced to extreme emaciation by huge numbers of Trema- 

 todes (the remarkable Gastrodiscus aegyptiacus) and Nematodes (Spirop- 

 tera megastoma) in the stomach and intestine. 



Non-parasitic Bdellourid.1T — Paul Hallez describes an interesting 

 Antarctic Planarian, Synsiphonium UouviUi g. et sp. n., one of the 

 Bdellouridre. These interesting forms (Bdelloura and Sync(didium) are 

 known as ectoparasites of the king-crab from the North American coast. 

 But the form now described was found free-living, and its peculiarities 

 make it necessary to erect a new genus. 



Excretory System of Bothriomolus.** — Paul Hallez gives a careful 

 account of the excretory system of this Turbellarian, and compares it 

 with that of Bothrioplana, which it resembles closely in many points. 



* Ceylon Marine Biological Reports, v. (1911) pp. 216-25 (4 pis.). 



t Joum. Quekett Mior. Club, xi. (1911) pp. 147-60 (1 pi.). 



% Proc. Zool. Soc, 1911, pp. 9-13 (2 figs.). 



§ Ann. Mus. Zool. Univ. Napoli, iii. (1910) pp. 1-3 (1 fig.). 



|j Centralbl. Bakt. Parasitenk., lviii. (1911) pp. 129-34 (1 fig.). 



1 Comptes Rendus, clii. (1911) pp. 461-3. 



** Arch. Zool. Exper., vi. (1911) pp. 441 63 (1 pi. and 1 fig.). 



