Van Name. — Simx^le Ascidians. 
PLATE 73. 
Figures all natural size. 
Fig. 159. Teihyum finmarkiense (Kiaer). Specimen attached to broken 
shell. Station 2466 (N. lat. 45° 29', W. long. 54° 24', 67 fathoms). 
Fig. 160. Caesira septentrionalis (Traustedt). Banks of Newfoundland. 
Fig. 161. Caesira robusta, sp. nov. Type. Wood's Hole, Mass. 
Fig. 162. Microcosmus nacreus, sp. nov. Type. Near Station 2501 (N. 
lat. 44° 27', W. long. 60° 20' 15", 26 fathoms). 
Fig. 163. Caesira citrina (Alder and Hancock). Specimen seen obliquely 
from one side. Off Cape Ann, Ma.ss., 45 fathoms. 
Fig. 164. Teihyum coriaceum (Alder and Hancock). Specimen seen from 
above. 
Fig. 165. Teihyum coriaceum (Alder and Hancock). Specimen seen from 
one side. 
Fig. 166. Caesira singularis, sp. nov. Off south end of Stellwagen's Bank, 
27 fathoms. 
Fig. 167. Caesira papulosa {Yen-ill). Station 2080 (N. lat. 41° 13', W. long. 
66° 21' 50", 55 fathoms). 
Fig. 168. Caesira lutulenla, sp. nov. Station 921 (N. lat. 40° 07' 48", W. 
long. 70° 43' 54", 67 fathoms). 
