MOI.LUSCOIDA. 
605 
MOLLUSOOIDA 
BY 
E. Perceval Wright, M.A., M.D., F.L.S. 
Review of Publications. 
Danielssen, D. Om to nye Arten Bryozoer. Vidensk. Selsk. 
Forhand. 18G7, pp. 24-25. 
Gray, J. E. Note on Oculinaria, a new genus of Soeial Asci- 
dians. Proc. Zool. Soc. Lond. 1868, p. 564. 
Hyatt, A, Observations on Polyzoa, suborder Phylactolaemata. 
8vo, Salem, 1866-68, with 9 plates, pp. 1-104. 
(A portion of this treatise, now separately printed, was noticed 
in last yearns ^ Record ^ as published in the ' Proceedings of the 
Essex Institute.^) Contains, besides an introductory chapter, 
one oh the bibliography and classification of the Phylactolaemata, 
a general description of the genera, and an account of the gene- 
ral anatomy and physiology of the group. Several new species 
are also described from America. These will 'be found detailed 
in the special part. 
Kowalevsky, a. Entwickelungsgeschichte der einfachen Asci- 
dien. Mem. Acad. Imp. des Sciences de St. Peter sbourg, 
tome X. no. 15, 1866. 4to, pp. 1-16, Taf. 1-3. 
Nitsche, H. Beitrage zur Anatomic und Entwickelungsge- 
schichte der Phylactolsemen Siisswasserbryozoen, insbe- 
sondere von Alcyonella fungosa. (Inaugural Dissertation.) 
Berlin, August 1868, 8vo, pp. 1-57, with 4 plates and 
2 woodcuts. Also Reichert u. Du Bois-Reymond^s Archiv, 
1868, pp. 465-521, Taf. 11-14. 
Tn this interesting thesis we find a very full account of tlie 
intimate structure of Alcyonella fungosa and of its statoblasts. 
The author regards the comparison of the ectocyst of the Poly- 
zoa with the mantle of the Tunicata as scarcely trustworthy ; 
but in treating of the general homologies he would appear not to 
have seen Mr. Hancock^s later paper oii the Tunicata. 
