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species of Callianassa, proposed to be called. C. Martensi. — Mr. Francis 
Day read a paper on races and hybrids among the Salmonidae, and exhibi- 
ted a series of specimens of young Salmon and hybrid Salmonidae reared at 
Sir J. Gibson Maitland’s Howietown Fish Establishment. — Prof. F. Jeff- 
rey Bell read a paper on the generic position and relations of Echinanthus 
tumidus of Tenison- Woods, from the Australian Seas, which he showed to 
belong to a different genus, proposed to be called Anomalanthus. — 
P. L. Sclater, Secretary. 
2. Linnean Society of London. 
17th January, 1884. — A paper was read by Mr. A. D. Michael 
On the »Hypopus« question or life history of certain Acarina. From a care- 
ful series of experiments and observations he concludes that — true »Hy- 
popi« are not adult animals but only a stage or heteromorphous nymphs of 
Tyroglyphus and allied genera. Nor do all individuals become »Hypopi« which 
latter stage takes place during the second nymphal ecdysis. It seems a pro- 
vision of nature for the distribution of the species irrespective of adverse 
conditions. »Hypopi« are not truly parasitic nor confine themselves to any 
particular insect. A new adult form described is called by the author Dis- 
paripes bombi, and he believes there are other species of the genus Dormadi- 
cus bee parasites admitted to be adults, though it is uncertain if they are 
identical with Dufours’ Trichodactylus. — J. Murie. 
3. Linnean Society of New South Wales. 
31st October, 1883. — (1. Botanical.) — 2. Notes on the tempera- 
ture of the body of the Echidna hystrix. By N. de Miklucho Maclay. — 
This is a detailed account of some experiments made by the writer at Bris- 
bane in July, 1879. He found, after observations carefully made on two 
occasions, that the average temperature of the body of the Echidna is 25° C., 
equal to 78° F., or very little more than that of Fish, and about 25° under 
that of Mammals generally. — 3. On the Plagiostomata of the Pacific, 
Part II. By N. de Miklucho Maclay and William Macleay, F.L.S. 
The continuation of a paper by the same authors, written some years back 
on the genus Heterodontus. The present paper gives descriptions and illu- 
strations of a new species from Japan named Heterodontus Japonicus. — 
4. Notes on some Reptiles from the Herbert River, Queensland. By William 
Macleay, F.L.S., etc. — In this Paper, after enumerating all the Reptilia 
contained in the collection, sent to him by Mr. Boyd from the Herbert River, 
Mr. Macleay describes as new a Lizard, Tiaris Boydü, and three snakes, 7ro- 
pidonotus angusticeps, Dendrophis bilorealis, and Herbertophis plumbeus, the 
latter a new genus allied to Coronella. — 5. Notes on some customs of the 
Aboriginal tribes of the Albert District, New South Wales. By C.S. Wil- 
kinson. The Author read some notes furnished him by Mr. W.H.J. Slee, 
the Government Inspector of Mines, regarding a singular ceremony which 
the aboriginal tribes of the Mount Poole district perform, when, as is often 
the case in that arid region, they need rain. Occasionally pieces of the fibrous 
variety of gypsum, Satinspar, are found by the natives who highly value 
them and call them »rain-stonesc, for they believe that the Great Spirit uses 
