. The fur seals and fur-seal islands of the North Pacific ocean. Sealing; Seals (Animals). branches from this basal part projecting forward and dorsalward. Testis situated around and among tlie branches of the ovary at their dorsal ends. Ova discharged into the atrial chamber, where they collect in its posterior portion to undergo devel- opment (fig. 8, ov.) (In this figure the visceral mass, lying loosely on the test, has been turned halfway around; so that the rec- a turn, r, is made to point toward the posterior instead of toward the anterior end of the test. This makes the ovary seem on th
. The fur seals and fur-seal islands of the North Pacific ocean. Sealing; Seals (Animals). branches from this basal part projecting forward and dorsalward. Testis situated around and among tlie branches of the ovary at their dorsal ends. Ova discharged into the atrial chamber, where they collect in its posterior portion to undergo devel- opment (fig. 8, ov.) (In this figure the visceral mass, lying loosely on the test, has been turned halfway around; so that the rec- a turn, r, is made to point toward the posterior instead of toward the anterior end of the test. This makes the ovary seem on the left instead of on the right of the body.) Ova and sperm ripe in the same individual at the same time. Ova very large, mm. in diameter; contains much food yolk. This species is so distinct from either of the other two species of the genus, a comijarison between which was made in connection with the description of J), tuberculata, that it would be superfluous to dwell upon the point. It is represented in the collection by a larger number of specimens than any of the other species, there being some hundreds present. All appear to come from St. Paul. Styela greeleyi, new species. General cliaracteristics.—Body elongated, somewhat flattened; tapering slightly toward both ends, at the pos- terior abruptly contracted into a slender peduncle, which is from one and a half to two times as long as the body. Dimension of one of the largest specimens: Length of body, cm.; greatest diameter, cm,; length of peduncle, cm. Color, yellowish brown, tinged with red on the anterior half. Siphons, bright orange red. Surface covered with longitudinal folds, which are less pronounced on the peduncle. Transverse folds present on the anterior half, but these possibly due to contraction. (Figs. 9 and 10.) Test.—Tough, coriaceous, but scarcely 1 mm. thick even through the folds. Dull grayish white on the inner and cut surfaces. Mantle.—Closely attached to test; muscula- ture weak
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherwashingtongovtprin
