VAN NAME: SIMPLE ASCIDIANS. 575 
Genus Pandocia Fleming, 1822. 
[= PoLYCARPA auct. plur.]. 
Distinguished from Tethyum [Styela] chiefly by the structure of the 
reproductive organs, which consist of a number (often of very numer- 
ous) small, rounded or bottle-shaped, generally hermaphroditic 
gonads, attached to the inner wall of the mantle on both sides of the 
body. This genus is none too well distinguished from Tethyum as 
intermediate species occur. Although one of the largest genera of 
ascidians, it is represented in the New England region proper by but 
one species. Another occurs in the very deep water off the shore. 
Pandocia fibrosa (Stimpson). 
P1.63,figs. 107, 110; Pi. 64, fig. 112; PI. 70, fig. 147; text-fig. 38. 
1852. Glandula fibrosa Stimpson, Proc. Boston Soc. Nat. Hist., vol. 4, p. 230. 
1854. Glandula fibrosa Stimpson, Smithsonian Contr., vol. 6, p. 20. 
1860. Glandula fibrosa Stimpson, Smithsonian Check-list, p. 2. 
1870. Glandula fibrosa Binney, Gould's Invertebrata of Massachusetts, ed. 
2, p. 22, [not pi. 23, fig. 323, which is Eugyra glutinans (Moller)]. 
1870. Glandula fibrosa Dall, Proc. Boston Soc. Nat. Hist., vol. 13, p. 255. 
1873. Glandula fibrosa Verrill, Amer. Journ. Sci., ser. 3, vol. 6, p. 440. 
1874. Glandula fibrosa Verrill, Proc. Amer. Assoc. Adv. Sci., vol. 22, pp. 348, 
352. 
1874. Glandula fibrosa Whiteaves, Amer. Journ. Sci., ser. 3, vol. 7, p. 7. 
1874. Glandula fibrosa Verrill, Amer. Journ. Sci., ser. 3, vol. 7, pp. 409, 413. 
1891. Glandula fibrosa Herdman, Journ. Linn. Soc. London, Zool., vol. 23 
p. 582. 
1901. Glandula fibrosa Kingsley, Proc. Portland Soc. Nat. Hist., vol. 2, p. 183 
1901. Glandula fibrosa Whiteaves, Geol. Survey Canada, publ. no. 722, p. 267 
1909. Tethyum fibrosum Hartmeyer, Zool. Anzeiger, vol. 34, p. 145. 
1909. Tethyum fibrosum Hartmeyer, Bronn's Tier-reich, vol. 3, suppl., p 
1360. 
Not Glandula sp. (fibrosa?) Knipovitsch, 1893 (= Caesira wagneri 
Hartmeyer) . 
Body rounded, somewhat longer than broad, and more or less 
noticeably compressed in a dorso-ventral direction in many individuals. 
Siphons rather near together, forming papillae on the dorsal surface of 
the body; the branchial, which is the smaller, near the anterior end of 
the body; the anal near the middle. Both orifices four-lobed. Sur- 
face of test rough and granular, a large part of the ventral region 
bearing an abundant growth of long fine branching hairs along whose 
