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Show 1878.] DR. GWYN JEFFREYS ON MOLLUSCA. 393 This specimen had been obtained about 75 miles from Denver, in 1875. The Secretary exhibited, on the part of Mr. A. Anderson, F.Z.S., a Bamboo driving-stick with leather thong attached, which had been taken out of the nest of an Indian Fish-Eagle (Haliaetus leucoryphus) in December 1876. A communication was read from Prof. J. O. Westwood containing a synopsis of the TJraniidae, a family of Lepidopterous Insects, together with a complete monograph of Coronilia, one of the genera of which it is composed. This memoir will be published entire in the Society's " Transactions." The following communications were read :- 1. On the Mollusca procured during the ' Lightning ** and 'Porcupine' Expeditions, 1868-70. (Parti.) By J. G W Y N JEFFREYS, LL.D., F.R.S., F.Z.S. [Eeceived April 5, 1878.] (Plates XXII., XXIII.) These expeditions were conducted under the auspices of the Society ; and preliminary Reports of them were published in the 'Proceedings' of that Society for 1869 and 1870. I subjoin lists of the dredging-stations, to which I shall have occasion to refer in giving the habitats of the species hereafter described or mentioned. The stations are extracted from the Reports and accompanying Charts. 'LIGHTNING' EXPEDITION, 1868. North of the Hebrides to the Faroe Isles. No. of Station. 1. 2. 3. 4. 5. 6. 7. 8. No. in Chart. VIII. IX. X. XII. XIII. III. XVI. North Latitude. O ( 60 10 60 24 60 28 59 36 59 5 60 31 61 2 Off the Fare West Longitude. o ; 5 59 6 38 6 55 7 20 7 29 9 IS 12 4 >e Isles. Depth in Fathoms. 550 170 500 530 189 229 650 164 & 208 Bottom Temperature. o Fahr. 32*8 41*7 33*2 47*3 49*6 48 0 The first column shows the stations at which dredgings were made, |