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Show 686 MR. F. MOORE ON NEW HESPERIDAE. [ June 18, allantois could just be traced into the chorionic end of the cord. Some injection was passed into the vessels of the cord, which filled the principal vessels of the chorion ; but as the specimen had been for some time in spirit before the injection was made, it did not enter the vessels of the villi. Slender vessels, however, traversed the non-villous spot opposite the os uteri, and some also were seen subjacent to the amnion where it was in contact with the wall of the tubular prolongation of the allantois situated in the left horn of the chorion. EXPLANATION OF PLATE XLIV. Fig. 1, Fcetal membranes oi Hyomoschus aquaticus, opened into and foetus removed ; reduced from natural size. Ch. Villous chorion of the foetal horn. Ch\ Villous chorion of the opposite horn. Al. Sac of allantois in the non-fecundated cornu, the communication of which with the tubular prolongation in the fcetal horn is seen to the right of the letters. Am. Sac of the amnion; the letters are placed on the amnion where it is in contact with the chorion. U. The umbilical cord; the letter is placed on the amnion where it is in contact with the allantois. o. The non-villous surface of the chorion opposite the os uteri. 8. 8. The smooth non-villous parts of the chorion in relation to the Fallopian tubes. 2. Magnified view of the free surface of the uterine mucous membrane of Hyomoschus, showing the crypts in which the villi of the chorion are lodged. At a the mouth of one of the uterine glands is shown. The drawings have been kindly made for us by Mr. J. D. Dunlop. 6. Descriptions of new Asiatic Hesperidae. B y F. M O O R E , Assistant Curator, India M u s e u m , London. [Received June 11, 1878.] (Plate XLV.) ISMENE SUBFASCIATA, n. sp. Male. Upperside dark velvety umber-brown ; costal edge of fore wing slightly ochreous; cilia of both wings ochreous. Underside paler : fore wing with a pale pink triangular costal patch before the apex ; posterior border ochreous, adorned with a large hairy tuft: hind wing with a transverse pink fascia across middle of the wing. Eyes red. Legs beneath and anal tuft ochreous. Expanse 2 inches. Hab. Ceylon (In coll. Sir W. H. Gregory and Dr. Thwaites). Allied to /. aria, Moore, from which it may be distinguished by the markings on the underside. CALLIANA, n. g. Wings ample, broad. Fore wing trigonal ; cell long, broad ; costal vein extending to one third from apex ; subcostal vein curved at end of the cell, first, second, third, and fourth branches arising at equal distances before end of cell, fifth from its end, the three former ter- |