101 



10. OBELIA LONGISSIMA (Pallas). Laomedea longissima, 

 Pallas. 



Northumberland, frequent. Alder. 



XL* OBELIA PLICATA, Hincks. 



Fairly common, dredged from Stations 1, 4, 7, 8 and 9, growing 

 on shells, stones and worm tubes. 



Gonophores : capsules (with medusoids) in June. 



Family SERTiJLARirD^. 



1. SEPvTULARELLA POLYZONIAS (Linn.) 



Not uncommon from beyond low water to deep water. Alder. 



Dredged in abundance from Station 8, 6 miles east of the Long- 

 stone, also from Station 1, on the root-clump of Antennularia got 

 from the lines, and gromng on a livmg Buccinum undatum. 



Gonophores : empty capsules found in September. 



2. SERTULARELLA GAYI (Lamouroux). Sertularia gayi, 



Lamouroux. 

 Occasionally in deep water. Alder. 



3. SERTULARELLA TRICUSPIDATA, Alder. 



From the deep water boats during spring, not rare. Alder. 



4. SERTULARELLA RUGOSA (Lmn.) 

 Low water to deep water, frequent. Alder. 



Growing on the point behind the north breakwater, Culler- 

 coats ; dredged from Stations 3 and 6 ; 6 miles east of the Long- 

 stone, and 40 miles north-east of St. Mary's Island. 



PC 



SERTULARELLA TENELLA, Alder. 

 On other Zoophytes, not common. Alder. 

 Dredged from Stations 2, 6, 7 and 8. 



6. DI APHASIA ROSACEA (Linn.) Sertularia rosacea, Linn. 



Occasionally from deepish water and low water, Bamborough. 

 Alder. 



Common, dredged from Stations 3, 4, 7, 8 and 9, 6 miles east 

 of the Longstone, and north-east of St. Mary's Island. 



Gonophores : capsules with sporosacs in July. 



