REPORT ON THE POLYZOA. 33 



1. Amathia, Lamouroux. 



Sertularia (pars), Linn. 



Amathia, Lamx., d'Orbigny (pars) ; Kraus, Heller, Hincks, &c. 



Serialaria, Lamk., Fleming, Johnst., Blainville, Kirchenpaner, d'Orbigny (pars), Busk, Engl. 



Cyclop., art. Polyz. ; Joliet, Barrois, &c. 

 Valkeria (pars), Dalzell. 



Character. — Zoarium radicate, erect or creeping, with free dichotomous branches. 

 Zooecia cylindrical or subovoid, with a broad adherent base, and more or less connate 

 laterally ; arranged alternately in a double series, disposed spirally, entirely or partially 

 surrounding the internodes, or in a straight line parallel with the axis, or in short 

 distant groups at the upper ends of the internodes. 



(1) Amathia lendigera, Linne (sp.). 



" Nifc Coralline," Ellis. 



Sertularia lendigera, Linn6, Pallas, Ellis and Sol., Lister. 



La Sertolara lendinosa, Cavolini. 



Amathia lendigera, Lamx., Pol. flex., p. 159 ; Heller, Hincks, Brit. Mar. Polyz., p. 516, pL Ixxiv. 



figs. 7-10, &c. 

 Serialaria lendigera, Lamk, Auctt. 

 Valkeria lendigera, DalyeU. 



Character. — Zoarium much branched, tangled, filamentous ; branches dichotomous, 

 about 0'5x0'15 mm. Zooecia subcylindrical, ovate, subcompressed, tapering gradually 

 in a long neck, disposed obliquely in series of four to five pairs close below each joint or 

 bifurcation, and gradually diminishing in length from below upwards. Cells sub- 

 distinct, and scarcely connate. 



Habitat. — Station 36, oif Bermuda, 30 fathoms, coral. 

 . [British and European Seas, uhique.~\ 



(2) Amathia distans, n. sp. (PI. VII. fig. l). 



Character. — Zoarium very slender and delicate, straggling, filamentous, very regularly 

 dichotomous. Internodes long, straight, rigid, thick-walled, about 0'15 mm. in diameter, 

 of pretty uniform length, and each completely encircled with a spiral coil, occupying 

 usually not more than the upper half of the internode, the lower portion of which is left 

 bare. Zooecia ovoid or oblong, about 0'4 or 0'5 mm. by O'l to 0"15 mm., distinct or not 

 closely connate, with a short conical neck. 



Habitat. — Off Bahia, 10 to 20 fathoms, mud. 



This form is at once recognisable by its delicate filamentous growth, and the great 

 distance between the spiral coils, giving it somewhat the aspect of Amathia lendigera. 

 Another character is the comparative shortness and distinctness of the zooecia. 



(ZOOL. OHALL. EXP. PAST L. 1886.) Ddd ^ 



