178 M. E. ITilckcl's Prodromus of 



14. *aS'. ampulla, II. Norway. 



15. *S. rhoj^ahnh'^j H. Norway. 



16. S. cornpressum, II. [Grantia comjircssa, J., var, a). 

 England ; Norway. 



17. S. utriciduSyYL. {Ute utriculus, O.S., yaw a). Green- 

 land. 



18. *5. vi'lIosum,lL Antilles. 



19. */S'. vesica, II. Messina (II.). 



Genus 7. Stconella, O. Schmidt. 



Gen. char. Skeleton of Sycarium. Mouth-opening pro- 

 duced into a thinly membranous rostrum (a canal not per- 

 forated by radial canals), and with no jjeristomial crown. 

 Three species. 



20. S. quadrangulata, O. S. Adriatic (0. S.). 

 21.* S. prohoscidea, H. Red Sea (Siemens). 



22. *iS'. tuhuhsa, H. Australia. 



Genus 8. Sycum, Risso. 



Gen. char. Skeleton of Sycarium. Mouth-opening with a 

 simple peristomial crown (surrounded by a simple circlet of 

 freely projecting spicules). Eighteen species. 



23. S. ciltatum,!!. [Sp.ciliatafFahr.). Greenland ; Brit- 

 ish coasts. 



24. S. arcftcum, II. {S. raphamis, var., O. S.). Greenland. 



25. S. coronatum, H. {Sj). coronata, Ellis). England, 



Weymouth (Max Schultze). 



26. S. giganteum, H. [Grantia ciliata, var., J.). Isle of 



Man ; Britain. 



27. S. ahpecuriis, H. [Grantia ciliata, var., Bb.). 



28. S. tesseUafu7n,H.. [Grantia tessellatu,'Qh.). Channel 



Islands (Buckland). 



29. S. ananas, H. [8p. ananas, Montagu). Britain. 



30. S. ovatjim, II. (S. ciliafum, Liebcrkiihu). Heligoland. 



31. *S. clavatinn, 11. Norway (Scliilling). 



32. *<S'. lanceolatiim, H. Norway (Schilling). 



33. *S. lingua, 11. Norway (Schilling). 



34. S. tergestitium {S. ciliatum, O. S.). Trieste. 



35. S. rajyhanus, O. S. Dalmatia (O. S.). 



36. S. cajnllosum, 0. S. Sebcnico (O. S.). 



37. S.setosuin,0.i^. Corfu (O. S.). 



38. S. llumholdtii, Risso. Nice ; Venice. 



39. S. infiatnm (Sp. inflata, Delle Cliiajc). Naples (D.C.). 



40. S. j^etiolatum, O. i<>. Destcrro (Fritz Miiller). 



