DKEDGING ON THE COASTS OF SHETLAND. 339 



shell was not our Stillfer ; and I had an opportiiuity of ascertaining what it 

 really was. 



Scandmavia, — From Bohuslan in Sweden to the coast of Norway : Loven. 

 Christiania-fiord, Norway, on Echinus esculenfm at Drobak, and on fishing- 

 grounds at two other places : Asbjornsen. Bohuslan, in 20 fathoms, on E. 

 neglectiis: Mahn. 



Fischer also states that Stillfer Turtoni is not uncommon on Echinus 

 liviclus, near the mouth-opening ; but he cites no authority for this unusual 

 habitat. E. liviclus, as is well known, excavates holes in slate and g-neissic 

 rocks, within tide-marks, and its lower surface is pressed closely to the stone. 



Another instance of the same kind of mollusk infesting different Echinoids 

 is that of Montacuta suhstriata, which has been found not only on Spatangus 

 purpureus, but on S. mericlionalis,Amphicletus ovatus, Brissus lyrifer, Echinus 

 esculentus, and Ciclans hystrix. 



2. S. asterieola, Broderip. 

 Hab, Lord Hood's Island, on Asterias Solaris (A. helianthus, Lam.): 

 Cuming. 



3. S. Mittrei, Petit. 

 Hab. Indian Ocean : Mittre. 



4. 8. fulvescens, A, Adams. 

 Hab, Isle of Labuan, 'n an Asterias : A. Adams. 



5. S. ovoidem, H. & A. Adams. 

 8yii. S. asterieola, A. Adams. 

 Hab. Borneo, in the body of an Asterias : A. Adams. 



6. S. Orbignyanus, Hupe. 

 Hab. New Holland, enclosed in the spines of Cidaris imperialis : Hupe. 



7. S. robustus. Pease. 

 Hab. Sandwich Isles, on Echini : Pease. 



8. S. apiculatus, Souverbie. 

 Hab. New Caledonia?: Montrougier. 



9. S. eburneus, Deshayes. 

 Hab. Isle of Bourbon, on Echini and Asterice : Maillard. 



B. Spire long. 



10. S. corcdlinus, Chemnitz. 



Hab. "West Indies, in madrepores and other corals : Chemnitz. 



11. S. sid)idatus, Broderip. 

 Hab. West Indies? 



12. S. Barronii, A. Adams. 



Hab. Tropical seas, encysted in the integuments of an Asterias : Barron. 



13. S. exaratus, A. Adams. 



. Hab. Philippine Isles, in the integ-uments of an Asterias : A. Adams. 



14. S. subangidatus, A. Adams. 

 Hab. West Indies. 



15. S. Acicula, Gould. 

 Syn. Eulima vitrea, A. Adams. 

 . Hab. Fiji Isles, in Holothurice : United States Exploring Expedition. 



