338 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



1912. Smittia reticulata Guerin-Ganivet, Contributions a 1' etude des Bryozo- 



aires des Cotes armoricaines, 3. Region de Concarneau, Travaux 



scientifiques du Laboratoire de Zoologie de Concarneau, vol. 4, p. — . 

 1912. Smittia reticulata Nordgaard, Revision av universitets museets samling 



av norske Bryozoer, Kgl. norske videnskabers selskabs skrifter, p. 22. 

 1921. Smittia reticulata Cipolla, Briozoi pliocenici di Altavilla presso Palermo, 



Giornale della Societa di Scienze Naturali ed Economiche di Palermo, 



vol. 32, p. 114, pi. 6, fig. 17. 

 1928. Smittina reticulata Canu and Bassler, Bryozoaires du Maroc et de 



Mauritanie, Memoires de la Societ6 des Sciences Naturelles du Maroc, 



vol. 18, p. 41. 



Some small fragments are unilamellar, but all the other specimens 

 encrust Orbitoides, corals, serpulae, debris of shells and Adeonel- 



Fig. 138. — Genus Malleatia Jullien, 1903 



A, B. Malleatia rara Jullien, 1903. A. Frontal side, X30, bearing vibices. 

 The lyrule, noted by Jullien on the poster, is not visible. B. Dorsal side, X30. 

 (After Jullien, 1903.) 



lopsis. They are quite typical. The development of the median 

 avicularium is variable according to the locality and sometimes even 

 on zooecia of the same colony. The lyrule is broad and flat and 

 often visible at the bottom of the peristomie. 



Biology. — The large median avicularium is much more salient in 

 specimens from calm waters; it is little developed in agitated waters. 

 It can be deeply immersed in the frontal when the calcification is 

 active. The larva affixes itself on the most varied objects. The 

 species accommodates itself to the most varied depths provided that 

 they are somewhat sandy. 



In the polar seas this species lives only at great depths; in the 

 Mediterranean, they do not pass beyond 280 meters and in the 

 equatorial zone they have been collected only in waters of little depth. 



Occurrence. — 



D. 5137. Jolo Light, Jolo; 6° 04' 25" N.J 120° 58' 30" E.; 

 20 fathoms; S., Sh. 



