ASCIDIANS OF THE PHILIPPINES — VAN NAME. 101 



wide interval (in some places with 12 to 14 stigmata) intervenes 

 between the median dorsal vessel and the first internal longitudinal 

 vessel, and there are but three or four of those vessels dorsal to the 

 base of the first fold. Along each side of the endostyle 10 or 12 

 stigmata intervene before the last internal longitudinal vessel is 

 reached. 



Intestinal loop small but broad and rounded; stomach small and 

 rounded w ith about 20 rather inconspicuous longitudinal folds in its 

 walls ; practically no rectum ; margin of anus with many small lobes. 



Gonads about a dozen on each side ; attached to the mantle in an 

 irregular row near the endostyle. Each gonad is a small oblong sac 

 whose dorsal end is only slightly produced into a neck. The ovary 

 in each is central and elongated and bordered (on the side toward the 

 mantle also overlapped and covered) the rounded or pear-shaped 

 testes. Though the sperm ducts were not traced, a small papilla on 

 the side of the neck of the gonad probably bears the aperture of a 

 duct common to all the testes in the gonad. 



Only two specimens (No. 30) (Cat. No. 5933, U.S.N.M.) in the 

 collection, both from station D5536 (off Apo Island, latitude 99° 

 15' 45" N.; longitude 123° 22' E., 279 fathoms, green mud, Aug. 

 19, 1909). 



In referring these specimens to Herdman's species (three speci- 

 mens of which were obtained off Ki Island, 129 fathoms, mud) the 

 writer does not overlook two important discrepancies, for Herdman 

 designates the branchial folds as " slight," though the internal lon- 

 gitudinal vessels are numerous and slender, as in the Philippine 

 specimens. Herdman likewise states that there are " apparently " 

 only three or four gonads on each side. This is, of course, subject to 

 individual variation, and as most of the characters and the deep 

 water habitat favor the probability that the two forms are identical, 

 the writer will not undertake to establish a new species for these two 

 small specimens. 



PANDOCIA OVATA (Pizon). 1908. 



Plate 31, fig. 31. 



190S. Polycarpa ovata Pizon, Rev. Suisse Zoologique, vol. 1G, p. 211, pi. 



11, figs. 15-20. 

 1909. Pandocia ovata Haktmeyer, Bronn's Tier-reich, vol. 3, suppl., p. 14S4. 



Body oval in outline, strongly compressed from side to side, at- 

 tached by one end; the apertures (both 4-lobed) on low elevations 

 near together at the other end. Test only moderately thick, opaque, 

 leathery, somewhat pearly inside and of a dirty brown color exter- 

 nally; its outer surface very uneven with coarse elevations and promi- 

 nences whose surfaces are themselves roughened with minute closely 

 placed wrinkles, but are practically free from incrusting foreign 



