14 ME. A. W. WATEES OX BEYOZOA FEOM EAPALLO 



p. 505) points out that the colour varies considerably in tlie 

 Gulf of Naples according to the time when they are taken. 



The primary zooecium has a central spine at the base of the 

 area, and one on each side halfway up as well as three spines at 

 each upper corner. The three lower spines are often reduced to 

 mere protuberances. An " additional spine " on the margin of 

 the aperture about halfway up occurs in many zocecia of all ages ; 

 in fact I have found it more frequent than in B. ditrwpce, where 

 it was first noticed by Hincks. 



The numb'^r of spines is undoubtedly a character of great 

 diagnostic value in the Bugulce, but until every character has 

 been compared we are likely to go astray sometimes. 



Stnnotum aviculaee, Pieper. (PI. 1. figs. 6, 7.) 



Gemellaria avicularis, Pieper, Jahrcs'jj' . IVest/dlischen Provinzial- 

 Vereins, vol. ix. p. 43, pi. ii. figs. 5-9. 



Notamia avicularis, Waters, " On the Use of the Avicnlanan Mandible" 

 8fc., Journ. R. Micro. Soc. ser. 2, vol. v. p. 6 (name only). 



Synnotum aviculare, Hincks, Ann. Sf Mag. Nat. Hist. ser. 5, vol. xvii. 



p. 257. 



? Gemellaria egyptiaca, Savigny (name on plate), pi. xiii. fig. 4, but 

 Loricaria egyptiaca, Audouin, ' Description de VEgypte ' (in text). 



Mr. Hincks has given a full description, in which he allows 

 that the structure of the zoarium is essentially the same as in 

 Notamia (now Epistomia), and agrees with Pieper that it may 

 perhaps be regarded "als Verbin dungs- Grlied zwischen Gemellaria 

 und Notamia^ For my own part I should not have removed it 

 from Epistomia {Notamia)., and still doubt whether a new genus is 

 required, but, as that is not an important point, have put it under 

 the genus proposed by Pieper and Hincks. There has been great 

 confusion concerning the nomenclature of the genera Gemellaria 

 and Notamia ; and while recognizing the correctness of Gregory's 

 remarks * on the use of the name Gemellaria t, I feel much 



* " British Palffiogene Bryozoa," Trans. Zool. Soc. vol. xiii. p. 227. 



t In reference to the date of publication of Savigny's plates, on which the 

 name " Gemellaire" first appeared, there seems a probability that they were placed 

 in the hands of various naturalists before the text was published. I purchased 

 a volume of plates from Friedlander, without text, but there was a manuscript 

 list of plates and figures, headed ' Zoologie de I'Egypte : Iconographie des 

 Echinodermes, des Polypes, et des Zoophytes; par Jules Cesar de Savigny, 

 1506-1812." This may have been copied from an older list! The names of all 

 the genera, whether established or new, appear at the foot of the plates in the 

 prei^ch form. 



