ASCIDIANS OF THE PHILIPPINES VAN NAME. 121 



side and usually have one or two small blunt projections at their 

 base. 



Alimentary loop of very simple form. Stomach comparatively 

 small and short, extending nearly dorsoventrally across the posterior 

 left side of the body. From the pyloric end of the stomach the in- 

 testine curves forward and extends obliquely dorsally, ending near 

 the base of the atrial tube. Anus not distinctly lobed. 



Ovary an irregular, elongated, sinuously convoluted body with a 

 few small lateral branches extending along the inner border of the 

 intestinal loop, its closed end situated where the ascending part of 

 the intestine crosses the middle of the body, the other end near where 

 the intestine leaves the stomach. At this point the ovary opens into 

 the large oviduct, which at first runs along the anterior border of 

 the stomach, and then leaves it and runs directly toward the terminal 

 part of the intestine, which it accompanies nearly to the end of the 

 rectum. The small irregularly lobed testes are not very numerous 

 compared with their numbers in most other species of the genus. 

 They are irregularly distributed over those parts of the intestine 

 and stomach which are adjacent to the ovary and oviduct. The com- 

 mon sperm duct apparently accompanies the oviduct. 



The only specimen (No. 15) (Cat. No. 6022, U.S.N.M.), of this 

 well-marked species, readily distinguishable by the simple open loop 

 formed by the alimentary tract, is from station D5147 (off Sulade 

 Island, Sulu Archipelago, Feb. 16, 1908, 21 fathoms, coral sand and 

 shells). Sluiter's (1904) specimens were from latitude 5° 36' 30" S.; 

 longitude 132° 55' 12" E., 90 meters, and latitude 8° 19' S. ; longitude 

 117° 41' E., 274 meters. 



Family PEROPHORIDAE Giard, 1872. 



Genus PEROPHORA Wiegmann, 1835. 



PEROPHORA HUTCHISONI MacDonald, 1859. 



1859. Perophora hutchisoni MacDonald, Trans, Linn. Soc. London, vol. 22 



p. 377, pi. 65, div. II, figs. 1-3. 

 1891. Perophora hutchinsoni Hekdman, Journ. Linn. Soc. London, vol. 23 



p. 602. 

 1893-1909. Perophora hutchisoni Seeliger, Bronn's Tier-reich, vol. 3, suppl. 



pi. 37, fig. 9. 

 1S9S. Perophora hutchisoni Herdman, Ann. Mag. Nat. Hist., ser 7, vol. 1 



p. 446. 

 1S99. Perophora hutchisoni Herdman, Cat. Australian Museum, Sydney, pp 



8 and 112. 

 1909. Perophora hutchisoni Hartmever, Bronn's Tier-reich, vol. 3, suppl. 



p. 14S7 (P. hutchinsoni, p. 1410.) 



The only specimen, evidently but a part of a colony, consists of a 

 slender stolon, about 50 mm. long, bearing nearly 100 zooids, each on 



