28 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. OO 



These specimens possess in general the characters of the form 

 from southeastern Africa which I called occidentalis, and possibly 

 should be recorded under that name. They have but the merest trace 

 of the character from which serripinna gets its name, though this is 

 not entirely absent as in japonic®. 



The distribution of this general type of serripinna — southeastern 

 Africa, Lesser Sunda Islands and Tonga — is curiously parallel to 

 that of the variation of Stephanometra monacantha in the direction of 

 S. indica — southeastern Africa, Ceylon, Lesser Sunda Islands, Tor- 

 res Strait. 



Oligometra Caledonia: from New Caledonia and O. japonica from 

 Japan represent the extremes of the smooth pinnuled variation from 

 the O. serripinna stock. 



2. Fuchow, Province of Fokien, China; Consul S. Siemssen; De- 

 cember 18, ipoj.- — One specimen ; there are 23-24 cirrus segments 

 which become nearly as long as broad distally ; P 2 is 7 mm. long with 

 eighteen segments which possess only a slight trace of lateral pro- 

 cesses ; the second-fourth segments of the earlier pinnules are carinate. 



Family TROPIOMETRIDiE 

 TROPIOMETRA AFRA (Hartlaub) 



Antedon afra 1890. Hartlaub, Nachr. Ges. Gottingen, Mai, 1890, p. 172 (1). 

 — 1891. Nova Acta Acad. German., vol. 58, No. 1, p. 86, pi. 5, figs. 50, 

 52 (1). 

 i. Bowen, Queensland. — One specimen, the type of the species. 



TROPIOMETRA MACRODISCUS (Hara) 



1. Misaki, Japan; 30-50 fathoms; Alan Ozvston.- — One specimen 

 purple in color and resembling the specimens from Japan in the U. S. 

 National Museum and in the Copenhagen Museum. 



2. Misaki, Japan; 30-50 fathoms; Alan Ou'ston. — One specimen, 

 slightly smaller than the preceding. 



I am now convinced that I was wrong in placing Hara's macro- 

 discns under the synonymy of Hartlaub's afra; macrodiscus is a 

 stouter and larger form than afra with longer and heavier cirri and 

 longer brachials. A glance at the cirri alone is sufficient to distinguish 

 them. 



TROPIOMETRA PICTA (Gay) 



Antedon carinata (part) 1882. P. H. Carpenter, Journ. Linn. Soc. (Zool.), 

 vol. 16, p. 502 (5). 



1. Santos, Brazil. — Ten specimens. 



2. Rio de Janeiro, Brazil. — One large specimen. 





