546 BUUUETIN 82, UNITED STATES NATIONAL. MUSEUM. 



No. 28 (fig. 915, p. 541) : Dredged on Febi-uary 7-8, 1903, at a depth of 350 

 meters. 



Total length (distal portion of column missing), about 5 mm.; length of crown, 

 about 1 mm. 



The fragment of the column attached to the calyx consists of 19 columnals. 



There are five large rounded infrabasals. 



The radials are just in lateral contact. 



The radianal occupies an area formed by the cutting away of the left side of 

 the right posterior radial beyond a concave line from the left-hand proximal 

 angle of the IBrj to the middle of the right distal border of the posterior basal. 



The IBrj and IBrj are present. 



No. 29 (fig. 916, p. 541) : Dredged on January 12, 1903, in 380 meters. 



There are seven short discoidal columnals at the top of the stem. 



The radials are not yet quite in lateral contact. 



The radianal is still almost in contact with the right distal border of the pos- 

 terior basal, the right posterior radial not having become extended beneath it. 



The first brachials are just forming. 



No. 30 (figs. 917-919, p. 541) : Dredged on April 10, 1902, in 385 meters. 



The length of the crown is 1 mm. 



There are 22 columnals and a lobate terminal stem plate. 



The radials are broadly in contact laterally, but the distal edge of the radial 

 circlet is deeply concave between the bases of the IBrj. The left proximal border 

 of the right posterior radial has become extended so that it occupies nearly two- 

 thirds of the length of the right distal border of the posterior basal. 



The first brachials are present. 



No. 31 (fig. 920, p. 545) : Dredged on November 9, 1902, at a depth of 385 meters. 



Total length (distal portion of column missing), 3.2 mm; length of crown, 

 1 mm. 



There are 12 columnals in the fragment of the stem attached to the calyx. 



The radials are narrowly in contact by their lateral angles. The left side of 

 the right posterior radial is cut away beyond a concave line from the left proximal 

 angle of the IBr^ to the middle of the right distal edge of the posterior basal. 



The radianal is situated over the left half of the right distal edge of the 

 posterior basal, its left-hand border just touching the dorsoventral plane passing 

 through the distal angle of the basal. 



The IBr^ and IBr„, the first brachials, and the rudiments of the second 

 brachials are present. 



No. 32 (fig. 921, p. 545) : Dredged on June 25, 1902, in 385 meters. 



The radianal occupies a relatively narrow region between the two posterior 

 radials and lies almost directly over the distal apex of the posterior basal. 



No. 33 (figs. 922, 923, p. 545) : Dredged on February 8, 1903, in 350 metei-s. 



The length of the crown is about 1 mm. 



There are 22 columnals and a terminal stem plate. The longest columnals 

 are somewhat over eight times as long as broad, with a median girdle. 



