248 University of California Publications. -  |ZooLocy 
3. Eucratea chelata (Linneus) Lamouroux. 
PL Vy figs: 7 859: 
Sertularia chelata Linn., 1758, ed. 10, p. 816. 
Cellularia chelata, Pallas, 1766, p. 77. 
Bull’s Horn Coralline Ellis, 1767, p. 42, Pl. XXII, figs. b, B. 
Cellaria chelata, Ellis and Solander, 1786, p. 25. 
Eucratea chelata, Johnston, 1847, ed. II, p. 288, fig. 64. 
Catenaria chelata, d’Orbigny, 1850, Vol. V, p. 43. 
Scruparia chelata, Busk, 1852, pt. I, p. 29, Pl. XVII, fig. 2. 
Eucratea chelata, Smitt, 1867, pp. 281 and 301, Pl. XVI, figs. 7-9. 
Eucratea chelata, Hincks, 1880, p. 11, Pl. ILI, figs. 9, 10. 
Zoarium ‘composed of ereeping branches consisting of a 
single series of zocecia growing irregularly over the substratum 
and adherent to it, and of erect branches (PI. V, figs. 7 and 8). 
Creeping branches (cr. br.) arising from the sides of the ad- 
herent zocecia; the erect, free branches (e. br.), from a point on 
the zocecial wall just below the aperture. Zoawcia narrowed pos- 
teriorly into a tube, widening gradually anteriorly; the polypide 
even in contraction remaining in the anterior portion of the 
zocecium. Aperture (ap.) oval, surrounded by a thin, raised, 
unarmed margin; operculum at its summit (op.). Oacia 
mitriform, somewhat pointed above, with a keel down the center, 
borne on an imperfectly developed zowcium arising just below 
the aperture (fig. 9, w.). Tentacle-sheath terminating above in 
a circle of setz which are everted during expansion of the poly- 
pide. 
The presence of sete both in Eucratea and Aetea is given 
only on the authority of others. Few of our specimens of 
Eucratca possessed ocecia, and none perfect ones. Figure 9 is 
taken from Hincks. 
Although not abundant at any one point, Hucratea chelata 
has been found at several localities on the coast of southern 
California. 
Gemellaria Savigny. 
Gemellaria Savigny, 1811. 
Notamia Farre, 1837. 
Gemellaria, Hineks, 1880. 
Zoarium erect, branching dichotomous, each branch given 
aff trom the sides of the zowcia close to their upper extremity. 
