160 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [454] 



Ascidians. 



Salpa Cabotti, adults and young ; August and September, (445.) 

 Doliolum, sp. ; summer, (A. AG-ASSIZ,) (446.) 



Appendicularia, sp., (like A. furcata ;) summer, (A. AG-ASSIZ,) (446.) 

 Appendicularia, sp., (like A. longicauda ;) summer, (A. AofASSiz.) 

 Larvae of fixed Ascidiaus, (445.) 



RADIATA. 

 Ecliinoderms. 



Strongyloceutrotus Drobachiensis, larvae, (447.) 

 Asterias areuicola, larvae ; evening, (447.) 

 A. vulgaris, larvae ; evening, (447.) 



Acaleplis. 



Mnemiopsis Leidyi; February, July to September ; day-time, (449.) 



Lesueuria liyboptera, adult ; September; day-time. 



Pleurobrachia rbododactyla, 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 

 &quot;ephyra&quot; 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, (Y. N. Edwards.) 



Oceania lauguida, medusae; June to September; day-time. 



Eucheilota ventricularis, young medusas; evening. 



E. duodecimals, medusa; July. 



Obelia, several species, medusas ; evening chiefly, (447.) 



Ehegmatodes tennis, medusas; September; evening. 



Zygodactyla Grosnlandica, medusas; June to September; day and 

 evening, (449.) 



JEquorea albida. medusa ; September ; evening. 



Tima formosa, adult ; February, 1872 ; April 30, 1873, (449.) 



Eutima limpida, medusas; September; evening. 



Lafoea calcarata, medusas ; September ; evening. 



Nemopsis Bachei, medusas; June to September; evening. 



Bougainvillia superciliaris, medusas, April, May, June : evening. 



Margelis Carolineusis, medusas; August and September, chiefly in the 

 eveniug, (450.) 



Dysmorphosa fulgurans, medusas ; evening, (448.) 



Modeeria, sp., medusas. 



Turritopsis nutricula, medusas; July to September; evening. 



