106 BULLETIN OF THE 



by mere shallow furrows. Angle of aperture about 40°. The whole surface is 

 marked with chevron-shaped lines of growth ; in one specimen the whole 

 surface is finely granulated, in the others it is smooth and shiny, as usual in 

 the genus. The septa are in six systems and five complete cycles. They are 

 marked with fine radiating granulated ridges. The primaries and secondaries 

 are about equal, and very exsert ; all the others remain below the border of the 

 calicle, which is deeply indented. There is a callous thickening at the base of 

 the septa, in the bottom of the fossa. The color of the corallum is a' dirty 

 flesh-color, inside and out. The tentacles are equal in number to the septa ; I 

 do not find the small supernumerary ones noticed by Moseley in Fl. alahastrwm. 

 There appears to be no outer sphincter to cover them. 



The diameters of the largest specimen are 5 and 4 cm. 



It is somewhat related to Moseley's Fl. alabastrum, but differs from it by its 

 elliptical outline, long and curved peduncle, and horizontal margin. 



Five fine living specimens were obtained. 



Range from 118 to 476 fathoms, in six stations, off Dominica, Martinique, 

 Grenada, and Barbados. 



Desmophyllum Riisei Duch. & Mich. 



Thalamophyllia Riisei Ddch. 



Plate I. Fig. 14. 



This is a true Desmophyllum, differing from the typical ones in growing 

 always in clusters from an incrusting base. It is hardly necessary to form a 

 new genus for it on that account. I can find no dissepiments, as stated by 

 Duchassaing. 



The corallites are much longer and narrower than in the figure of Du- 

 chassaing and Michelotti. They are generally 2 or 3 cm. high, with a diameter 

 of only 5 to 7 mm. 



Range from 88 to 120 fathoms, in five stations, off Montserrat, Dominica, 

 and Martinique. 



Desmophyllum crista-galli Edw. & H. 



In 399 and 442 fathoms, off Martinique and Barbados. 



Desmophyllum Cailleti Duch. & Mich. 



Range from 73 to 1,131 fathoms, in eighteen stations, off Havana, Nuevitas 

 Moutserrat, Guadeloupe, Dominica, St. Lucia, St. Vincent, and Barbados. 



Khizotrochus tulipa Pourt. 



Range from 84 to 106 fathoms, in three stations, off Barbados. 



