7l',(l SUMMARY OF CURRENT RESEARCHES RELATING TO 



wiili elements like themselves. These plastosomes, of which the author 

 gives a detailed account, represent an elementary structure in the cyto- 

 plasm, and may be regarded as the primordia of ontogenetic differentia- 

 tions. In his remarkable paper, Meves suggests that the plastosomes 

 form the hereditary substance of the protoplasm, just as the chromosomes 

 form the hereditary substance of the nucleus. 



Nematodes in Deer.* — E. Brumpt has examined some of the deer 

 from the forest of Chantilly, which have been subject for four or five 

 years past to a mysterious malady, fatal to large numbers. He has found 

 very abundant occurrence of Nematode parasites — Dictyocaulus ncrneri, 

 D. filaria, GEsophagostomam venulosum, Nematodirus roscidus, Tricho- 

 cephalus affinis, and a new species of Capillaria. It seems, indeed, that 

 the decimating malady is in great part a pulmonary " strongylosis." 



Platyhelminthes. 



Entozoa in Australian Birds.f — T. Harvey Johnston has brought 

 together under their hosts, ninety-eight in all, a list of the endoparasites 

 recorded, including Protozoa, Trematoda, Cestoda, Nematoda, and 

 Acanthocephala. 



Tapeworms of Birds.J — Paul Solowiow deals with Monopylidium 



infundibulum Bloch from a fowl which he fed largely on house-flies 

 (Masca domestica). This corroborates Grasse's view that the fly is the 

 intermediate host of the tapeworm. From Fuligula cristata the author 

 describes Hymenohpis villosides sp. n. and H. megarostellis sp. n., another 

 (unnamed) species of the same genus, and fourthly AploparaJcsis fidigulosa 

 sp. n. From Podiceps nigricollis the author describes Schistocephalus 

 dimorphus Creplin. 



Gid Parasite.§ — C. M. Hall discusses the gid parasite, which is 

 usually called Ccenitrus cerebralis. It seems that it should be called 

 3fidticeps. The larval form occurs not only in the sheep, but in ox, 

 goat, horse, chamois, moufflon, gazelle, and various antelopes. The 

 geographical distribution is discussed at length. Other species of the 

 genus, such as M. serialis from hares and rabbits, are dealt with. The 

 life-history is the subject of another paper. || 



Tapeworms from Mammals.^" — F. E. Beddard describes a species of 

 Oochoristica from the Lesser Anteater (Tamandua tetradactyla), Bertiolla 

 xrcopetheci sp. n. from the green Cercopitheque, and Thymnosoma gam- 

 bianum sp. n. from a Pouched Rat (Cricetomys gambianus). 



Parasites of Fishes.** — Jas. Johnstone describes a new Trematode, 

 Paracotyle caniculse g. et sp. n., from the head of the common dogfish, 

 particularly in the region of the gill-slits. The diagnosis reads : " One 



* Coniptes Rendus, clii. (1911) pp. 906-9. 



t Journ. and Proc. R. Soc. N.S. Wales, xliv. (1910) cp. 84-122. 



% Centralbl. Bakt. Parasitenk. lte Abt., lx. (1911) pp". 93-132 (26 figs.). 



§ U.S. Dep. Agric, Bull. 125 (1910) pp. 1-68. 



|| U.S. Dep. Agric., Circ. 159 (1910) pp. 1-7. 



1 Proc. Zool. Soc. (1911) pp, 626-60 (10 figs.). 



** Report Lancashire Sea Fisheries Laboratory, xix. (1911) pp. 16-50 (5 pis. and 

 figs.). 



