ASC1DIANS OF THE PHILIPPINES VAN NAME. 103 



papilla. The gonads are exceedingly numerous (100 or more on a 

 side), are distributed singly or in regular rows or groups over the 

 inner surface of the mantle on most of the right side and the part of 

 the left side not occupied by the digestive tract. 

 This species was obtained at the following two stations only : 



No. 24. Station D5144 (off Jolo Light, 19 fathoms, coral sand, Feb. 15, 

 1908). One specimen (Cat. No. 5935, U.S.N.M.), to which a very 

 immature ascidian, perhaps a young individual of this species, 

 was attached. 



No. 150. Station D5149 (off Sirun Island, Sulu Archipelago, 10 fathoms, 

 coral and shells, Feb. 18, 1908). One specimen. (Cat. No. 

 602 F. U.S.N.M.) 



This is a very typical species of the genus Pandocia. It was de- 

 scribed by Pizon (1908) from Amboina and is very closely allied to, 

 if distinct from, Pandocia stephenensis Herdman, 1899, from Port 

 Jackson, Australia. It is also allied to P. obtecta (Traustedt), 1883 

 (syn. Polycarpa multiphiala Verrill, 1901) of the West Indies and 

 Bermuda (see Van Name, 1902), but is distinguished from the last by 

 fewer internal longitudinal vessels on the folds and especially by the 

 very much more numerous and smaller and more rounded gonads, 

 which contain fewer eggs and fewer testes than in those of the West 

 Indian form. 



A specimen of Pandocia pedata from station D5640 (off Labuan 

 Blanda Island, Buton Strait, Dec. 13, 1909, 24 fathoms, sand and 

 broken shells) has several very young ascidians (No. 73) attached 

 to its surface. They are of flattened form attached by the whole 

 ventral surface, and have four well-developed branchial folds on each 

 side, rather numerous internal longitudinal vessels, and a longi- 

 tudinally plicated stomach with a rudimentary caecum. Immature 

 gonads of the usual Pandocia type were distinguished in the largest 

 individual, which was only about 2.5 mm. long. The specimens, 

 though perhaps of the present species, are too immature for satisfac- 

 tory identification in the present state of our knowledge of the 

 ascidians of this region. 



Genus POLYANDROCARPA Michaelsen, 1904. 



POLYANDROCARPA MAXIMA (Slniter), 1904. 



Plate 31, fig. 33. 



1904. Gynandrocarpa maxima Sluitek, /Sioo#a-Exped., vol. 56a, p. 93, pi. 15. 



figs. 5-7. 

 1909. Polyandrocarpa maxima Hartmeyee, Bronn's Tier-reich. vol. 3, suppl., 



p. 1370. 



The only specimen consists of a compact cluster of about nine in- 

 dividuals growing one upon the other and so completely fused into 

 an irregular oval mass that it would be taken for a single large 

 ascidian were it not for the many apertures (which are 4-lobed and 



