ASCIDIANS OF THE PHILIPPINES VAN NAME. 



97 



PANDOCIA PEDATA (Herdman), 1881. 



Plate 23, figs. 1-3. 



1851. Polycarpa pcdata Herdman, Proc. Roy. Soc. Edinburgh, vol. 11, p. 71. 



1852. Polycarpa pcdata Herdman, Rep. Voy. Challenger, vol. G, Tunica ta, 



p. 180, pi. 24, figs. 1 and 2. 

 1S85. Polycarpa pcdata Tratjstedt, Vidensk. Meddel. Nat. For. Kjobenbavn, 



ann. 1884, p. 48. 

 1S91. Polycarpa pcdata Herdman, Journ. Linn. Soc. London, Zool., vol. 23, 



p. 583. 

 189S. Styela whiteleggei Herdman, Ann. Mag. Nat. Hist., ser. 7, vol. 1, p. 



445. (Nomen nudum.) 

 1899. Styela whiteleggei Herdman, Catalogue Australian Museum, Sydney, 



No. 17, pp. 40 and 110, pi. Gyn. II, figs. 6 and 7; pi. Cyn. XIV, 



figs. 1-6. 

 1904. Styela pcdata Sluiteb, Siftoj/a-Exped., vol. 56a, p. 126. (Listed jis not 



found by expedition.) 



1908. Polycarpa pcdata Pizon, Rev. Suisse Zoologique, vol. 16, p. 218. 



1909. Pandocia pedata-\-Tethyum whiteleggei Hartmeyer, Bronn's Tier- 



reicb, vol. 3, suppl., pp. 1360 and 1364. 



Body usually somewhat elongated, tapering toward the anterior 

 end, where the branchial aperture is situated, and broader and 

 rounded at the poste- 

 rior end; it may be 

 either somewhat com- 

 pressed laterally or 

 nearly round in cross 

 section. Usually it is 

 attached in a nearly 

 horizontal position (as- 

 suming the ventral to be the lower side) by means of an irregular 

 but often long and narrow pedicel arising from the ventral region 

 posterior to the middle of the body. One or more accessory pedicels 

 arising near the main one may assist in the attachment, or a whole 

 group of root-like processes may replace the single pedicel, which 

 in any case often breaks up at its foot into root-like processes for 

 attachment. Usually the body axis is curved so that the anterior 

 end, and often the posterior also, is turned up (dorsally) to a greater 

 or less extent, but this curvature is generally less pronounced than 

 in P. aurata. Atrial aperture on a more or less conspicuous conical 

 elevation on the dorsal surface posterior to the middle of the body, 

 sometimes very far back. Both apertures 4-lobed. The above de- 

 scription will apply more or less satisfactorily to most of the speci- 

 mens in the collection, but variations in the shape of the body, the 

 extent of curvature of the body axis, length and character of the 

 pedicel or processes for attachment, etc., are very great. Test 

 usually light colored, hard, tough, and opaque, not pearly within. 

 101825°— Bull. 100—17 7 



Pig. 40. 



-Pandocia i>edata (Herdman). 

 stoics of body. X .6. 



Left and right 



