144 CCELENTEEATA 



disc small ; tentacles short : buried in the sand near low water mark ; from 

 Cape Cod to Hatteras; Europe. 



FAMILY 4. SAGAETIIDAE. 



Anemones with a sphincter and with acontia ; cinclides usually present ; 

 tentacles usually numerous: 20 genera. 



1. SAGAETIA Gosse. Outer surface smooth; oral disc not lobed; 

 cinclides present; tentacles in 3 or 4 cycles and retractile: many species. 



S. luciae Verrill. Body 8 mm. high, 6 mm. in diameter, olive green 

 in color, with about 12 longitudinal orange stripes ; 84 tentacles in 4 rows : 

 very common on stones and shells in tide pools; Long Island Sound to 

 Massachusetts Bay and farther north. 



S. leucolena Ver. Body elongate, 6 cm. long extended, 10 mm. in 

 diameter, with a translucent flesh color; tentacles 96, in 4 rows: common 



Fig. 234 Fig. 235 Fig. 236 



aractis rapiformis (from Parker). Fig. 235 Sagartiam 

 Parker). Fig. 236 Metridium dianthus (from Parker). 



Fig. 234 Paractis rapiformis (from Parker). Fig. 235 Sagartia modesta (from 



th 



under stones and in the sand in shallow water from North Carolina to 

 Cape Cod. 



S. modesta Ver. (Fig. 235). Height 6 cm.; diameter 15 mm.; color 

 yellowish; tentacles 60: buried to the tentacles in sand; Long Island and 

 Vineyard Sounds. 



2. METRIDIUM Oken (Actinoloba Blainville). Outer surface smooth; 

 pedal disc broad; oral disc lobed; cinclides present; tentacles very 

 numerous and short: several species. 



M. dianthus (Ellis) (M. marginatum Lesson) (Fig. 236). Length up 

 to 10 cm., width 7 cm.; color variable, but usually brownish or yellow- 

 ish : the largest and one of the commonest sea anemones on the Atlantic 

 coast; New Jersey to Labrador, from low-water mark to 90 fathoms; 

 Pacific coast; Europe. 



3. ADAMSIA Forbes. Pedal disc adherent, the animals fixing them- 

 selves to the shells of hermit crabs or to crustaceans ; a band of cinclidial 

 tubercles around the base of the column, the rest of which is smooth. 



A. tricolor Lesson. Height 75 mm. ; diameter 45 mm. ; tentacles 500 

 or more in large individuals: on hermit crabs; North Carolina to Florida, 

 in shallow water. 



