554 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxiv. 



in some cases the mode of growth of the genera Gormdaria and 

 Telesto are combined in the same specimen, the colony starting in 

 the primitive way on a sponge spicule and giving off branches which 

 themselves branch like Telesto colonies. Several cases Avere found in 

 which a number of the sponge spicules 7 or 8 inches long are involved 

 in one mass by anastomoses of the branching polyps. The branch- 

 ing forms attain a height of 50 to 100 mm. 



The calyces vary enormously in size, some being 10 mm. in height 

 and 1 mm. in diamenter, Avhile others are less than 2 mm. high. Their 

 diameter is fairly constant. 



The calycular walls are marked by eight longitudinal costa? and 

 terminate distally in an eight-rayed rosette. The polyps are com- 

 pletely retractile. 



The spicules are stout warty spindles and clubs, the verruca3 being- 

 very thickly crowded. 



The color is light brown, sometimes yellowish. 



Type.— Ckt. No. 22574 U.S.N.M., Albatross Station 3910, north 

 coast of Molokai, 337 fathoms. 



Distribution. — Between the islands of Molokai and Maui; Station 

 3865, 265-283 fathoms (Cat. No. 22572, U.S.N.M.) ; Station 3883, 277- 

 .284 fathoms. 



North coast of Molokai: Station 3910, 311-337 fathoms (Cat. No. . 

 22574, U.S.N.M.) ; Station 3911, 224-337 fathoms (Cat. No. 22571,' 

 U.S.N.M.) ; Station 3914, 289-292 fathoms (Cat. No. 25351, 

 U.S.N.M.). 



CLAVULARIA CORRUGATA, new species. 

 Plate XLI, fig. 2. 



The usually somewhat distant polyps are connected by band-like 

 solenia that in places expand into lobular masses from which one or 

 two polyps spring. Polyps cylindrical, 2 to 4 mm. high, slightlj^ 'ex- 

 panded basally, walls strongly grooved longitudinally, there being 

 eight grooves and corresponding costse. The distal part of the walls 

 is transversely corrugated, so that the corrugations and grooves 

 together cut up the surface into a regular series of squarish nodules. 

 Distal end forming an eight-rayed rosette over the retracted 

 tentacles. 



Spicules. — Stout warty spindles, shorter in proportion to length 

 than in other species of the genus, packing the walls of the solenia 

 and polyps. In the polyp walls they have no regular disposition, but 

 seem to be crossed in almost every direction. They seem to be absent 

 from the tentacles. 



Color. — Very light brown, almost white in alcohol. 



