GENUS SALPINGCECA. 353 



exception that in the former instance the pedicle possesses a more or less curved 

 outline, while in those personally observed, this structure has been invariably per- 

 fectly straight ; the shape and size of the lorica and all other details of importance 

 accord, however, so harmoniously, that the two forms can scarcely be regarded 

 otherwise than as local varieties of one and the same specific type. The lorica 

 itself very closely approaches in shape that of the fresh-water and non-pedicellate 

 species Salpiugceca niiimta, being like that, conical, or as Professor Clark sug- 

 gests, resembling a Florence-flask with the neck cut short. The examples of this 

 species examined were found in some profusion, in the first instance, attached 

 to various Sertularian zoophytes gathered near low-water mark at Bognor, Sussex, 

 and more recently under similar circumstances at St. Heliers, Jersey. An animal- 

 cule is represented at PI. V. Fig. 34, in which the collar and flagellum being 

 retracted, pseudopodic processes are extended from the anterior region in a manner 

 closely resembling what has already been recorded of S. amphoridium. An early 

 developmental phase previous to the production of the lorica, and in which the 

 zooid is not to be distinguished from an ordinary stalked example of the genus 

 Monosiga, is represented at PI. III. Fig. 13. 



Salpingoeca longipes, S. K. Pl. VI. Fig. 7. 

 Lorica ovate, truncate at the anterior border, slightly tapering pos- 

 teriorly, mounted on a long, straight, slender pedicle, which equals four 

 or five times its length ; contained animalcule shortly ovate, occupying 

 the anterior two-thirds of the cavity of the lorica. Length of lorica 

 1-2500". Hab. — Salt water, solitary or in scattered groups. 



The great length of the pedicle compared with the lorica, and the very simple 

 contour of this latter structure, render this species easy of recognition. The con- 

 tained animalcule, adapting itself to the shape of the lorica, is almost globular, and 

 devoid of that narrow anterior prolongation pertaining to the more ordinary repre- 

 sentatives of the genus, and which conveys to them a bottle-like contour. Examples 

 furnishing the material for this description were discovered by the author, in November 

 1873, attached to Confervce and Polyzoa growing in the Brighton Aquarium. 



Salpingoeca urceolata, S. K. Pl. V. Figs. 14-16. 



Lorica urceolate, conical, gradually tapering towards its junction with 



the pedicle, inflated in a shoulder-like manner anteriorly, and then suddenly 



constricted and forming a short and somewhat contractile neck ; contained 



zooid flask-shaped, inflated posteriorly, with a narrow neck-like anterior 



portion ; pedicle straight and rigid, equal to or slightly exceeding the lorica 



in height. Length of lorica 1-2000". Hab. — Salt water, solitary. 



This species was obtained by the author in company with S. marina, but in 

 less abundance, at Bognor, Sussex, in September 1872 ; the elegant pitcher-like 

 shape of the lorica at once distinguishes it from the preceding or any other stalked 

 representative of the genus that has been discovered, with the exception, perhaps, 

 of .S. ringens. From this latter form, however, it differs in the greater narrowness of 

 the neck-like region, which is further remarkable for its elasticity, expanding and 

 contracting considerably in accordance with the movements of the animalcule. In 

 the deserted loricas, which were frequently observed, the contraction, as shown at 

 Pl. V. Fig. 16, attains its utmost limit. 



Salpingoeca teres, S. K. 

 Lorica attenuate, conical or subfusiform, widest anteriorly, about four 

 times as long as broad ; pedicle straight, slightly exceeding the lorica in 



2 A 



