ASCIDIANS OF THE PHILIPPINES VAN NAME. 119 



the Albatross Expedition, as would indeed be expected, since they are 

 of various sizes and ages, and come from different localities. With 

 Herdman's (1906) description of specimens from Ceylon there are 

 some discrepancies, notably in the more numerous tentacles, the 

 spirally coiled horns of the dorsal tubercle and in the occasional pres- 

 ence of intermediate papillae on the internal longitudinal vessels 

 which he mentions. The first two differences may easily be attributed 

 to individual variation, but no intermediate papillae were found in 

 the Philippine specimens and would hardly be expected to occur as 

 an individual peculiarity. Herdman mentions the presence of " in- 

 termediate horizontal membranes crossing the meshes in places." 

 These can be nothing but rudimentary transverse vessels, and the 

 small papillae may have belonged to such vessels. In most specimens 

 some of the transverse vessels do not extend entirely across the sac, 

 but taper off and become rudimentary and finally disappear without 

 extending the entire distance. 

 The localities of the Philippine specimens are: 



No. 125. Station D5360 (off Corregidor Light, Feb. 7, 1909, 12 fathoms, hard 



bottom). One specimen (Cat. No. 6024, U.S.N.M.). 

 Nos. 89, 94, 122. Catbalogan, Samar, April 15 and 16, 1908. Nine specimens 



in all. (Cat. Nos. U.S.N.M., 5947. 5943, and 6026, respectively.) 

 No. 154. -Endeavor Point, December 24, 1908. One large specimen (Cat. 



No. 6021, U.S.N.M.). 

 No. 99. Station D5254 (off Linao Point, Gulf of Davao, May IS, 190S. 21 



fathoms, sand and coral). One specimen (Cat. No. 6023, 



U.S.N.M.). 

 No. 70. Station D5141 (off Jolo Light, Feb. 15, 190S, 29 fathoms, coral 



sand). One specimen (Cat. No. 5944, U.S.N.M.). 

 No. 55. Jolo, Jolo Island, Feb. 11, 190S. One specimen (Cat. No. 5942, 



U.S.N.M. ) . 

 No. 64. Station D5174 (off Jolo Light, Mar. 5, 1908. 20 fathoms, coarse 



sand). One specimen (Cat. No. 5949, U.S.N.M.). 

 No. 114. Station D5555 (off Cabalian Point, Jolo, Sept. 18, 1909, 34 fathoms, 



coarse sand). Two large specimens (Cat. No. 6025, U.S.N.M.) 

 No. 82. Station D5147 (off Sulade Island, Sulu Archipelago, Feb. 16. 190S, 



21 fathoms, coral sand and shells). One specimen (Cat. No. 



5946. U.S.N.M.). 

 No. 90. Station D5163 (off Observation Island, Sulu Archipelago, Feb. 24, 



190S, 2S fathoms). One specimen (Cat. No. 5948, U.S.N.M.). 



PHALLUSIA APERTA (Sluiter), 1904. 



1904. Ascidia aperta Sluitek, tSiboga-'Exped., vol. 56a, p. 3S, pi. 2, fig. 4; 



pi. 6, figs. 1-5. 



1909. Phallusia aperta Haktmeyer. Bronn's Tier-reich, vol. 3, suppl., p. 

 1401. 



In the only specimen in the collection the body is short, broad 

 dorsoventrally, and decidedly compressed from side to side. Pos- 

 terior border rounded, anterior portion of body somewhat produced, 



