88 THE ZOOLOGIST. 



mentioned there were a very large number of small-sized, though not one 

 large specimen. Entangled in the spines of many of them were small egg- 

 cases with unfertilized ova within. The Ophiurids were only six in number, 

 and but a single Holothurian, not in a condition for determination. There 

 were eighteen different species of Echinoderms taken in all. 



Further notes on the Zoophytes and Sponges obtained during the cruise 

 of the ' Triton ' were embodied in a paper by C. O. Ridley. These 

 groups, though containing few species, were rich in individual specimens. 

 The sponge Amphilectus (Isodictya) Edwardi was represented by finely 

 developed specimens, and the Suberites ficus, in some examples, showed 

 instances of the vents on a special excretory area. 



Prof. T. Spencer Cobbold then read a description of Liijula Mansoni, 

 a new human Cestode. The parasite in question was received from 

 Dr. Patrick Manson, of Amoy. After an account of the animal, Dr.Cobbold 

 remarked that the observations of M. Duchamp, taken in connection with 

 the embryological studies of the late Dr. Bertolus, render it extremely 

 probable that tlio Ligula of the Trout is the sexually immature state of the 

 great broad tapeworm of man. If this genetic relation should be established 

 by further researches, it is possible that the proscolices or six-hooked 

 embryos of Bothriocephalus latus might, in place of passing through the 

 ordinary piscine host, develop as immature Ligula within the human body. 

 We know that phenomena precisely analogous to this do actually occur iu 

 the case of Tcenia solium, the proscolices developing into scolices or 

 cysticerci within the human subject instead of passing into the flesh of 

 swine. In this case the ultimate host becomes also the intermediary bearer. 

 An act of cannibalism would certainly bring about the completion of the 

 genetic cycle. — J. Mubib. 



Zoological Society of London. 



December 19, 1882.— Prof. W. H. Flower, LL.D., F.R.S., President, 

 in the chair. 



The Secretary made a report on the additions that had been made to 

 the Society's Menagerie during the month of November, and called special 

 attentiou to a collection of Reptiles from the Western States of North 

 America, presented by Mr. Samuel Garman ; and to a young Lynx, from 

 Ballistau, presented by Capt. Baldock, R.A., which was apparently referable 

 to Felis isabellina, Blyth. 



Mr. Sclater exhibited some photographs of a new Zebra, from Shoa, 

 lately named Equus Grevyi by M. A. Milne-Edwards, which had been sent 

 to him by that gentleman, and pointed out the differences which separated 

 this animal from the nearly allied E. zebra. 



The Rev. H. H. Slater exhibited, and made remarks on, the skin of a 

 Shrike (Lanius, sp. inc.), which had been obtained near Spurn Point. 



The Secretary exhibited, on behalf of Lord Lilford, the skin of a young 



