190 



UNITED STATES NATIONAL MUSEUM BULLETIN 251 



bottom part of second intestinal loop in some specimens. Anal mar- 

 gin cut in finely. Gonads 4-12 on left and 15-27 on right side, some- 

 what elongated. Testicular follicles up to about 15, arranged in two 

 rows on attachment surface. 



97. Styela plicata (Lesueur) 



Ascklia plicata Lesueur, 1S23, p. 5, pi. 3, fig. b. 



MATERIAL EXAMINED 



China or Japan : From the bottom of the USS Palas after a voyage across the 

 Pacific from China or Japan. P. L. Jouy, no. 2479. Fifteen specimens (USNM 

 11711). 



Description. — The largest of the 15 specimens examined is 61 mm. 

 in length, and has 2 gonads on the left, and 5 on the right side. Test 

 leathery, thin but tough, yellowish white; mantle brownish. 



98. Styela clava Herdman 



Figure 82 

 Styela clava Tokioka, 1959b, p. 462 (references). 



Figure 82. — Styela clava Herdman: a, 25 mm. specimen from Chefoo; b, 16 mm. specimen 

 from same locality; c, right half of mantle body of Japanese specimen, inner side. 



