VIU 



TABLE OF CONTENTS. 



CHAPTER VI. 



THE CORALLARIA TABULATA AS HYDROIDS. 



Section 1. Millepora alcicornk. — Its Hydra. There are 



two kiiuis of them, larpe and small ones. They have 



no special affinity to the elass of Polyps. The Coral 

 stock, p. 2'J-2--2i)5. 



Section 2. PociUopnru iJamicornis. — The Coral-stoek 

 has the same structure as Millepora. p. 2Si> and 2!)(;. 



Section 3. Seriatopora siibulata. — Affinities to the C'o- 

 rallaria Rugosa. p. 20G. 



CHAPTER VII. 



THE GENERA OF THE CAMPANULARIANS. 



Section 1. Clijtia (Orthnpi/xis) poterium. — Bibliography. 

 Adult Ilydroid. Embryology, p. 297-304. 



Section 2. Cli/tia (Ti-oc/mpi/xis) liicophora. — Adult Ily- 

 droid. Embryology. p. 304-306. 



Section 3. Cli/lia (I'!nli/pi/ii!^) ci/lindrica.- — Free Me- 

 dusa. Ilydroid. The C'ampanularians embrace Aca- 

 lephs of different families, p. 30G-3O8. 



Section 4. Tiurnpsis diademata. — Free Medusa. Embry- 

 ology. Order of succession of the tentacles, p. 308-311. 



Section 5. Ldomrdea ampJiora. — Adult Ilydroid. No 

 free Medusa. Embryology, p. 311-315. 



Section C. Ohelia comjiiissitralis. — Peron's genus Obelia. 

 Adult Ilydroid. Embryology. Free Medusa, p. 315-321. 



Section 7. Eucope diaphana. — Adult Hydroid and its 

 affinities. Embryology. Free Medusa, p. 322-32.3. 



Section 8. Di/namena pumila. — Bibliography. Struc- 

 ture of the adult Hydroid. Adult Medusoid. Em- 

 bryology. Budding. p. 326-332. 



CHAPTER VIII. 



THE SIPHONOPHOR^. 



Section 1. SiphonopJioree in general. — Ought to be sub- 

 divided into separate sub-orders, p. 333-33.5. 



Section 2. The genus PhysaUa. — Its polymorphism and 

 special characters, p. 335 and 33G. 



CHAPTER IX. 



CLASSIFICATION OF THE HYDROID.T.. 

 Section 1. Tabular view of the whdle order of Hy- Section 2. Geogi-aphical distribution of the Ilydroidtc 



droidce. — It embraces eight sub-orders, with forty-six 

 families, p. 337-371. 



Localization of these Acalephs. p. 371. 



PART v. — HOMOLOGIES OF THE KADIATA. 



Section 1. General Homologies. — Normal position and I Section 2. Special Homologies of the Classes. — Cor- 

 natural attitudes to be distinguished. Plan of struc- respondonee between the structure of Polyps and that 



ture. Spheromeres. p. 375 and 376. | of the Acalephs and Echiuoderms. p. 377-380. 



