206 LAFOEED^E. 



range, and included those Campanularian species of which 

 the C. dumosa (Fleming) is the type. The restoration of 

 Lamouroux's name (Lafoea) for the latter group renders 

 it necessary to define Calycella anew ; and I now restrict 

 it to the operculated forms, of which Campanularia syringa 

 (Linnaeus) may be taken as the type. 



1. C. SYRINGA, Linn. 



" CREEPING BELL CORALLINE," Ellis, Corall. 25, pi. xiv. fig. b, B. 

 SERTULARIA SYRINGA, Linn. Syst. 1311. 



VOLUBILIS, Pall. Blench. 122. 



REPENS, Ellis $ Soland. Zooph. 52. 

 CLYTIA SYRINGA, Lamx. Cor. flex. 203. 

 CAMPANULARIA SYRINGA, Lamk. An. s. Vert. (2nd eel.) ii. 132; Van Bencde/i, 



Camp. 37, pi. iii. fig. 9; JoJmst. B. Z. 110, woodcut 19. 

 CAPSULARIA SYRINGA, Gray, Cat. B. M. Eadiata, 86. 

 CALICELLA SYRINGA, Hincks, Cat. Devon Zooph. 23 ; Ann. N. H. (3rd ser.) 



viii. 294 ; All-man, Ann. N. H. for May 1864. 

 WRIGIITIA SYRINGA, Agassis, N. H. U. S. iv. 354. 



Plate XXXIX. fig. 2. 



STEM creeping, smooth; HYDROTHEC^E of a dark horn- 

 colour, cylindrical, rounded off below, with a slightly 

 sinuated margin, which is prolonged above into an oper- 

 culum composed of 8 or 9 segments, borne on twisted 

 pedicels of variable length, but with not less than three 

 or four whorls ; GONOTHEC^E oval, smooth, with short, 

 ringed stalks (1 or 2 rings), distributed amongst the 

 calycles. 



THE rim of the hydrothecre in this species is always 

 described as perfectly plain ; and so, on a first inspection, it 

 appears to be. But a careful examination with the micro- 

 scope shows that it is very slightly sinuated, rising at 

 intervals into minute points, between which are extremely 

 shallow depressions corresponding with the segments of 



