160 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [454] 
Ascidians. 
Salpa Cabotti, adults and young ; August and September, (445.) 
Doliolum, sp.; summer, (A. AGASSIZ,) (446.) 
Appendicularia, sp., (like A. furcata ;) summer, (A. AGASSIZ,) (446.) 
Appendicularia, sp., (like A. longicauda ;) summer, (A. AGASSIZ.) 
Larve of fixed Ascidians, (445.) 
RADIATA. 
Echinoderms. 
Strongylocentrotus Drébachiensis, larve, (447.) 
Asterias arenicola, larve; evening, (447.) 
A. vulgaris, larve ; evening, (447.) 
Aecalephs. 
Mnemiopsis Leidyi; February, July to September ; day-time, (449.) 
Lesueuria hyboptera, adult; September; day-time. 
Pleurobrachia rhododactyla, adult and young; January to May, 
July to September; day-time and evening, (448.) 
Idyia roseola, adult ; September ; day-time, (451.) 
Cyanea arctica, adult; August, September; day-time. Young in the 
“ephyra” stages; April; young of all sizes up to four inches across; 
May, (449.) 
Aurelia flavidula; August, September; day-time, young ; May, (449.) 
Dactylometra quinquecirra, adult and young; July to September; 
day and evening, (449.) 
Trachynema digitale, young; Wood’s Hole, July 1; day-time. 
Tiaropsis diademata; Wood’s Hole; April 17, (V. N. Edwards.) 
Oceania languida, meduse; June to September; day-time. 
Eucheilota ventricularis, young meduse; evening. 
E. duodecimalis, medusa; July. 
Obelia, several species, meduse ; evening chiefly, (447.) 
Rhegmatodes tenuis, meduse ; September ; evening. 
Zygodactyla Greenlandica, medusee; June to September; day and 
evening, (449.) 
A£qucrea albida, meduse ; September ; evening. 
Tima formosa, adult; February, 1872; April 30, 1873, (449.) 
Eutima limpida, meduse; September; evening. 
Lafoéa calcarata, meduse; September; evening. 
Nemopsis Bachei, meduse; June to September; evening. 
Bougainvillia superciliaris, meduse, April, May, June: evening. 
Margelis Carolinensis, meduse ; August and September, chiefly in the 
evening, (450.) 
Dysmorphosa fulgurans, medusz ; evening, (448.) 
Modeeria, sp., meduse. 
Turritopsis nutricula, meduse; July to September; evening. 
