14 S MONOGRAPH OF THE FOSSIL FOLYZOA OF THE 



and almost at the bottom of the side wall. No abortive cellules, nor ovarian vesicles 

 were observed. 



Locality. — Santa Barbara, Cal. Miocene. 



Tlie curious quadrangular form of the cellules and the tubulated special pores will 

 sufficiently distinguish this species. It does not seem to be common. 



The tubes of the special pores are often curved at the inner side, presenting much 

 the appearance of horns. This character, always more or less constant, has suggested 

 the specific name. There is often a depression, extending completely across the surface 

 of the cellule, immediately below the mouth. 



Subfam. E S C II A R I P R I N M , d'Orbigny. 1851. 

 ESCHAPJPORA, d'Orh. 1851. 



Colony and cellules exactly like Eschardla; cellules pierced by the same transverse 

 or radiating fossets behind the mouth, but provided in addition with two or more 

 special pores surrounding the oral opening. Most frequently these pores are only 

 two in number and placed one on each side of the mouth, always being independent 

 of the ovarian vesicle. Accessory cellules rare. 



The "special pores," on which M. d'Orbigny placed so much stress, and it seems 

 deservedly, in his classification of the Polyzoa, it appears, from the researches of Busk 

 and others, are not at all connected with the reproductive function, as supposed by 

 the first named author, but seem to have been the openings through which the vibra- 

 cula or avicularia, or both, were supplied with their motive and other organs. For a 

 good description of these two classes of appendages, we would refer the reader to the 

 appendix to Mr. Busk's very able papers on the Polyzoa of the British Museum, in, 

 the catalogue of that institution. 



E. distaks, n. s., fig. 32. — Colony apparently in a tortuous anastomosing series of 

 plates, robust, cellules on both faces. Cellules small, elongated, often acuminate at 

 the proximal end; placed in longitudinal lines and quincunx apparently separated 

 longitudinally, sometimes to the extent of the length of a cellule ; the lines are laterally 

 very near together, and occasionally, though rarely, the ornamented portions of two 

 cellules are found without any apparent depression between them. Mouth small, 

 round, oval or subquadrate ; generally bordered by a thickened raised lip, which is 

 usually continued around the portion of the cellule containing the -'special fossets," 

 generally disappearing towards the proximal end. Surface of the cellules continuous, 

 the division being marked by a gentle concavity, or not at all distinguishable, and 

 with the more central portion marked by five pairs or more of fossets. Special pores 

 elongated, oblique, placed abreast of the mouth, aud surrounded by the same rim. 

 Ovarian vesicle large, elongated, rounded anteriorly, generally constricted near the 



