. Bulletin - United States National Museum. Science. ASCIDIANS OF THE PHILIPPINESâVAN NAME. 91 Three sizes of transverse vessels, the smallest of which may either cross or divide the stigmata. Five to seven stigmata usually inter- vene between internal longitudinal vessels on the intervals between folds. Margin of anus lobed. Ovaries long and tubular with the testes arranged along their sides. The gonads are however very immature and their number was not determined. STYELA MAEANDRIA Sluiter, 1904. 1904. Styela maeandria Sluiter, Siboga-', vol. 56ff. p. 77, pi. 9, figs. 18-20. 1909. Teth
. Bulletin - United States National Museum. Science. ASCIDIANS OF THE PHILIPPINESâVAN NAME. 91 Three sizes of transverse vessels, the smallest of which may either cross or divide the stigmata. Five to seven stigmata usually inter- vene between internal longitudinal vessels on the intervals between folds. Margin of anus lobed. Ovaries long and tubular with the testes arranged along their sides. The gonads are however very immature and their number was not determined. STYELA MAEANDRIA Sluiter, 1904. 1904. Styela maeandria Sluiter, Siboga-', vol. 56ff. p. 77, pi. 9, figs. 18-20. 1909. Tethyum maeandrium Hartmyeb, Bronn's Tier-reich, vol. 3, suppl., p. 1359. The single specimen which the writer has identified provisionally with this species is quite regularly egg-shaped, attached by the small end, and has the apertures very near together at the other end, the branchial being almost exactly terminal. Both are 4-lobed and only slightly promi- nent in the preserved specimen. Test thin and tough, the outside yellow, becoming browner anteriorly; the inner surface is yellowish and slightly pearly; the sub- stance on section yellowish white. The outer surface is minutely wrinkled, the wrinkles being mainly transverse and very close together, especially in the pos- â ,, . , m1 ⢠-, , Figs. 44, 45.âStyela maean- terior parts ot the body. The rides be- DKIA smjiteb. 44, exter- tween these wrinkles are broken up into NAL VIEW- x 1-1- 45« DoR- , â . , ⢠, . , , SAL, TDBEUCLB. X minute elevations which are coarser and more prominent near the apertures. Height of specimen 31 mm.: greatest transverse diameter 18 mm. Mantle rather thin but with its transverse and longitudinal muscu- lar layers forming fairly continuous sheets. The tentacles could not be satisfactorily counted. Dorsal tubercle of circular outline, its orifice simply C-shaped with the open interval to the left and somewhat forward. Horns not incurved. Dorsal lamina irregularly notched along the
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