718 SUMMARY OF CURRENT RESEARCHES KKLATING TO 



rarely it occurs in two periods close to the consecutive new and full 

 moons. In 1!H)6 the observer saw the first worms a quarter of an hour 

 after midnight. Three quarters of an hour later they "covered the 

 whole water as with a sheet," and reached to a depth of five or six feet 

 below the surface. An hour and a half later they had begun to 

 disappear, and by 2.15 a.m. there was not a single worm to be seen. 



Studies on Australian Leeches.* — E. J. Goddard describes two 

 new species of Glossvphonia (syn. Clepsine), and a new genus Semi- 

 lagemta. In the latter the body is thick and pear-shaped, with convex 

 dorsal surface and flat ventral surface ; the somites are denoted partly 

 by papilla, partly by sulci ; they are trianuulate in the greater part of 

 the body, and twenty in number. 



Nematohehninthes. 



Note on Filaria immitis.t — Thos. L. Bancroft thinks it most likely 

 that the young filaria pass out from the apex of the mosquito's pro- 

 boscis or labium. He gives a diagram depicting the escape of a young 

 filaria into the skin alongside the stylets. • The author has also tried to 

 ascertain how long a time must elapse before an infected dog shows 

 embryo filaria in its blood. He finds that about nine months must 

 elapse. 



Platyhelminthes. 



New Human Tapeworm. J — N. Leon describes what seems to be a 

 quite new tapeworm from man. It may be referred to the sub-family 

 Ligulina, but it requires a new genus, and the name Braunia jassyensis 

 is proposed. 



New Tapeworm in a Dog.§ — N. Cholodkovsky describes Tun in 

 punka sp. n. from a Tunisian dog. The scolex is very large (1 "5 mm. 

 broad), unarmed, with four strong suckers (slightly unsymmetrical) and 

 a small apical elevation. 



Cestodes of Birds. || — 0. Fuhrmann has done good service in bring- 

 ing together the results of eleven years' work on the tapeworms of birds. 

 Particular species may occur in many hosts, but always in hosts belonging 

 to the same group. About 300 species are dealt with, and these are 

 referred to fifty genera, of which a systematic account is given. 



Yellow-brown Cells of Convoluta paradoxa.f — F. Keeble has made 

 a study of the yellow-brown cells of Convoluta parodoxa, a small brown 

 accelous Turbellarian which occurs within a narrow belt of sea-weed on 

 the shore. It exhibits tidal migrations within this belt. The migratory 

 movements are the resultant reactions to the various directive stimuli to 

 which, in its changing environment, it is subject. The egg-laying and 

 hatching are periodic. The periods synchronise with those of the neap 



* Proc. Linn. Soc. N.S.W., xxxiii. (1908) pp. 320-42 (13 figs.), 

 t Journ. R Soc. N.S.W., xxxvii. (1903) (received 1908) pp. 254-7 (2 figs.). 

 \ Zool. Anzeig., xxxiii. (1908) pp. 359-62 (3 figs.). 

 § Tom. cit., pp. 418-20 (4 figs.). 



|| Zool. Jahrb., 1908, Supplement 10, Heft 1, pp. 1-232. 

 «j[ Quart. Journ. Micr. Sci. liv. (1908) pp. 431-79 (3 pis. and 3 figs.). 



