ANTARCTIC BRYOZOA — ROGICK 313 



Avicularia: The only two avicularia present are damaged or in- 

 complete; they are shown in plate 35,B,D. They are oral, oval, 

 median, and tipped forward a bit, within the peristomie. The avi- 

 [ cularial chamber is symmetrical, small, and median. 



Orifice: The primary orifice curves deeply distally,is flatter laterally, 

 H has a shallower proximal curve, and a low, medium-sized lyrula. At 

 , the sides are two blunt, thin cardelles. The secondary orifice is not 

 complete in the available specimens. However, what there is of it 

 appears to be elevated at the sides and proximal corners and at the 

 sides and beak tip of the avicularium, confining the avicularium to the 

 peristomie and separating it from the rest of the frontal surface. The 

 length of the incomplete secondary orifice is 0.317-0.331 mm. 

 m OvicELLs: Not seen. 

 \ Distribution: The Antarctic specimen is from a rock from Station 

 i 184, Marguerite Bay 



k Waters (1904, p. 62) reported a Smittia reticulata "with avicularia 



.' : slightly longer than is usual in the European form," from the Antarc- 



I tic, but since it is not figured it is uncertain as to what species he had. 



It cannot be the present form, however, because of his notation of the 



avicularia. 



Thornely (1924, p. 14) also reported but did not figure a Smittia 



reticulata with wide spatulate avicularia and squarish orifice, from the 



I Antarctic. Here again, the identity of the species is open to serious 



question. It probably is not the same as that of Waters and definitely 



: is not the present form. 



: Since the present material is so fragmentary it, too, is of questionable 



determination, but the specimens do seem to agree rather closely with 



I Dr. Osb urn's S. prolifica, which Dr. Bassler has declared to be 



synonymous with S. reticulata. Therefore the specimens are being so 



: identified. Osburn's specimens are from various California and 



eastern Pacific localities. 



Literature cited 



Andersson, K. a. 



1902. Bryozoen wahrend der Schwedischen Expeditionen 1898 und 

 1899 .... Zool. Jahrb. Abt. Syst., vol. 15, pp. 537-560, Taf. 30. 

 Annandale, N. 



1912. The occurrence of Entoprocta in Indian waters. Rec. Indian Mus., 



vol. 7, pt. 2, p. 205. 

 1915. Polyzoa of the Lake and of brackish water in the Gangetic Delta. 

 Mem. Indian Mus., vol. 5, No. 1, pp. 119-134. 

 Bassler, R. S. 

 ) 1934. Notes on fossil and Recent Bryozoa. Journ. Washington Acad. Sci., 



I vol. 24, pp. 404-408. 



' 1935. Bryozoa (genorum et genotyporum index et bibliographia) . Fossilium 



catalogus, I. Animalia, vol. 67, pp. 1-229. 

 1953. Bryozoa, in Treatise on invertebrate paleontology. Geol. Soc. Amer., 

 pp. i-xiii, G1-G253, 175 figs. 



