594 SUMMARY OF CURRENT RESEARCHES RELATING TO 



centre, with the cells closely connate, vertical in the middle, and 

 oblique towards the circiirafercnce. Among the marginal cells a few 

 small pores are to be seen." This description would seem to us to 

 also recall a young Lichenopora, and as there are many characters in 

 the adult common to Lichenopora (Discoporella) and Heteropora, a 

 comparison in the young and adult stage of these two genera may 

 furnish important results. 



The genus is described as " Polyzoary forming an encrusting 

 mass, discoid when young, composed of numerous long, closely 

 packed, tubular cells, continuous throughout the whole thickness, and 

 with the orifice not projecting. 



Mr. MacGillivray also describes two new Catenicellce from Port 

 Phillip Heads, and two Adeonce, called respectively Dictyopora Wilsoni 

 (closely allied to Adeona arborescens Kirch.), and D. alhida var. 

 avicularis, from the same locality. 



A new genus Urceolopora is also defined, and a species U. nana 

 described and figured. This " genus resembles Calwellia in its indi- 

 vidual cells, but unlike all the Gemellaridse, these are not arranged 

 in pairs, but alternately." 



Tertiary Bryozoa, &cj from Reggio (Calabria).* — In a large 

 quarto memoir of 460 pages, with maps and numerous plates. Pro- 

 fessor G. Seguenza gives a list and description of 2686 species of 

 fossils from the tertiaries of Eeggio, representing Vertebrates, 

 Molluscs, Bryozoa, Entomostraca, Echinodermata, Coolenterates, and 

 Protozoa, of which 445 are considered new and 994 of the total 

 number are now known living. 



A large number of these are microscopic fossils, and the Bryozoa 

 have sj^ecial interest as they arc found in almost all the formations of 

 the tertiaries, mostly in great numbers, and in a good state of preser- 

 vation, and up to the present time but a few have been described 

 from the province of Eeggio. The species are distributed as follows 

 in the various zones of the tertiary : — Tongrian, 7 ; Aquitanian, 5 ; 

 Langhian, 3 ; Helvetian, 118 ; Tortonian, 81 ; Messinian, ; Zanclean, 

 165 ; Astian, 77 ; Sicilian, 82 ; Saharian, 101. 



It is to be regretted that the author is wanting in the courage 

 '*hich would have led him to cut away useless species and reduce the 

 number of synonyms. The strong point of the memoir, as far as the 

 Bryozoa are concerned, is the cai*eful comparison with the species 

 described in the classical works of Eeuss and Manzoni, and if more 

 detailed comparison is made with the living Sicilian fauna much will 

 be added to our knowledge of the distribution of the Bryozoa, and as 

 the range of variation can bo better studied in the living fauna, the 

 number of names of fossil species will no doubt be much reduced. 



Now that the number of known Bryozoa is very large, with an 

 extensive synonymy, and frequently changing generic significations, 

 it sometimes happens that authors give names already in use, and 

 on this account the names Flustra deniiculata, Lepralia eximia, and 



* Seguenza, G., " Lc Formazioni Tcrziarie nella Prov. di Keggio (Calabria)," 

 Mem. Accacl. del Liucei vi., (1880) pp. 445 (17 pis.). 



