ASCIDIANS OF THE PHILIPPINES — VAN NAME. 151 



of Didemnum ternatanum except for their larger size. (See fig. 101.) 

 These colonies are from : 



No. 7. Station D5145 (near Jolo Light, Feb. 15, 190S, 23 fathoms, coral, 



sand, and shell). Rather large colony (pi. 30, fig. 23) (Cat. 



No. 5S82, U.S.N.M.). 



No. 15. Station D5147 (off Snlade Island, Sulu Archipelago, Feb. 16. 1008, 



21 fathoms, coral, sand, and shells). (Cat. No. G022, U.S.N.M.) 



A rather large colony received from the University of the Philip- 

 pines and collected by Dr. L. E. Griffin and Mr. L. D. Wharton at 

 Bantayan has similar spicules. 



DIDEMNUM MOSELEYI (Herdman), 1886. 



18S6. Leptoclinum moseleyi Herdman, Rep. Voy. Challenger, vol. 14, Tuni- 



cats, p. 272, pi. 37, fig. 9-14. 

 1S98. Leptoclinum moseleyi Hebdman, Journ. Linn. Soc. London, Zool., 



vol. 23, p. 631. 

 1900. Didemnum moseleyi Sluiteb, Siootfffl-Exped., vol. 56b, p. 45. 

 1909. Didemnum moseleyi Haetmeyer, Bronn's Tier-reich, vol. 3, suppl., 



p. 1450. 



102 



Figs. 102, 103. — Didemnum moseleyi (FTerdman). 102. Spicules prom colony from 

 Station D4145. X 700. 103, Spicules from colony from Station D5145. 

 X 700. 



Specimens from two localities appear to belong to this species of 

 Herdman's, although they are proportionately thicker and less 

 densely crowded with spicules than those on which his description 

 was based. From station D5145 there is in addition to a very small 

 colony, one apparently originally at least 30 mm. in diameter grow- 

 ing upon a branching coral. It is of a light brownish color becoming 

 paler at the margin. From station D5174 there is a larger colony 

 of a uniform buff color surrounding a calcareous worm tube for a 

 length of 75 mm. and attaining a thickness of 5 mm. or 6 mm. in some 

 places. Spicules very abundant in the superficial layer of the colo- 

 nies, but much fewer in the interior portions. The small 6-lobed 

 branchial apertures of the numerous and closely placed zooids are 

 quite conspicuous, especially in the largest colony. Common cloa- 

 cal apertures, when distinguishable, small and irregularly lobed. 

 They are probably quite numerous. Surface of colonies fairly 

 smooth and even, but not shiny. Spicules mostly between 0.021 mm. 

 and 0.032 mm. in diameter, spherical with very numerous short 



