18 ETJCRATIID^J. 



Branches given off from the sides of the cells close to the 

 upper extremity. No vibracula or avicularia. OCECIA 

 none. 



GEMELLARIA is closely allied to Eucratea. The single cell 

 presents the same general character in both ; the differ- 

 ences lie in the mode in which the cells are united, the 

 plan of the branching, the total absence, as it seems, of 

 ocecia, and the nature of the adherent base, which is not 

 a creeping fibre, or line of adnate cells, as in Eucratea, 

 but a mass of interlacing tubes, such as we meet with in 

 the genus Bugula. An interesting intermediate form is 

 found in the genus Scruparia, mihi. 



GEMELLARIA LORICATA, Linnaeus. 

 Plate III. figs. 1-4. 



COAT-OF-MAIL CORALLINE, Ellis, Corall. 40, no. 7, pi. xxi. fig. b, B. 



SERTULARIA LORICATA, Linn. Syst. ed. 10, 815. 



CELLULARIA LORICULATA, Pall. Elench. 64: Daly ell, Bern. An. i. 233, pis. 



xliii. & xliv. 



SERTULARIA LORICULATA, Linn. Syst. ed. 12, 1314. 

 CELLARIA LORICULATA, Ell. & Sol. Zooph. 24: Lamk. An. a. Vert. ed. 2, ii. 



179. 



SCRUPARIA LORICATA, Oken, Lehrb. Naturg. 90. 

 CRISIA LORICULATA, Lamx. Pol. Coral, flex. 140. 

 LORICARIA EUROP.SA, Lamx. Expos. M6th. 7. 

 NOTAMIA LORICULATA, Flem. B. A. 541 : Farre, Phil. Trans. 1837, 413, 



pi. xxvii. figs. 6-9. 



LORICULA LORICATA, Cuvier, Rt-gno Anim. ed. 2, iii. 303. 

 GEMICELLARIA LORICULATA, Blainv. Diet. Sc. Nat. Ix. 425: Actinol. 461, 



pi. Ixxviii. fig. 4. 

 GEMELLARIA LORICULATA, Van Sen. Recherches (sep.), 1845, 33, pi. v. 



figs. 1-7: Johnston, B. Z. ed. 2, 293 & 477, pi. xlvii. 



figs. 12, 13 : Alder, North. & Durh. Cat. (sep.) 47. 

 GEMBLLARIA LORICATA, Busk, B.M. Cat. i. 34, pi. xlv. figs. 5, 6: Smitt, 



CEfvers. K. Vet.-Akad. Forh. 1867, 286 & 324, pi. xvii. 



fig. 54. 

 GEMELLARIA WILLISII, Dawson, Proc. & Trans. Nova-Scot. Tnst. Nat. Sc. i. 



pt. 3 (1864-65), Proceed, p. 3. 



