442 PROCEEDINGS OF THE NATIONAL MUSEUM voii. 8« 



ASTROPECTEN ARTICULATUS var. VALENCIENNESI Mflller and Troschel 



Locality— TexdiS, Clyde T. Keed (1, E. 5228). 



LUmiA CLATHRATA (Say) 



Localities. — Smithsonian-Hartford station 19, Puerto Kico (arm, 

 E. 5478). Alhatross station 2016, Virginia, oflf Accomac County (1, 

 6372). Albatross station 2017, Virginia, off Accomac County (1, 

 6273). Fish Haick station 8369, Chesapeake Bay (1, E. 1181). Texas, 

 Clyde T. Reed (2, E. 5229). 



LUIDIA SENEGALENSIS (Lamarck) 



Locality. — Smithsonian-Hartford station 19, Puerto Rico (2, E. 

 5582). 



Notes. — Both the specimens have 9 arms. In the larger R=145 mm, 

 and in the smaller R=70 mm. 



OREASTER RETICULATUS (Linnaena) 



Locality. — Smithsonian-Hartford station 28, St. John (1, E,5415). 



OPHroiASTER GUILDINGU Gray 



Locality. — Smithsonian-Hartford station 28, St. John (1, E.5453), 



LINCKIA GUILDINGU Gray 



Localities. — Smithsonian-Hartford station 12, Haiti (4, E.5429, 

 E.5430, E.5447). Station 28, St. John (4, E.5432, E.5433, E.5434). 

 Station 56, Barbados (1, E.5431) . Station G8, St. Thomas (2, E.5477) . 



Notes. — Two of the specimens from station 12 have 6 arms, the 

 larger with R = 80 mm. Another has 5 arms with R = 80 mm. The last 

 is a comet with 1 long arm and 5 short arms. Of the specimens from 

 station 28 two have 6 and two have 5 arms. The specimen from 

 station 56 and both of those from station 68 have 6 arms. Thus, of 

 the 11 specimens collected eight have 6 and three have 5 arms. 



THYRASTER SERPENTARIUS (Muller and Troschel) 



Locality.— OQ Tampa Bay, Fla., James E. Benedict, 1901 (1, 36995). 



FREYELLA MEXICANA, new species 



Characters. — Disk 11 nmi in diameter; 6 stout arms only slightly 

 swollen in the genital region, 110+ mm long; disk covered with a 

 pavement of small plates, each with a single spinelet ; genital region 

 uniformly covered with larger plates each with usually 2 to 4 similar 

 spinelets, more or less in a transverse series ; no papulae ; pedicellariae 

 numerous on disk and arms; mouth plates large, the aboral ends of 

 each pair separated by a small plate and supporting the large circular 

 azygous interradial; each mouth plate with 9 to 12 spines; first two 



