BULLETIN 59, UNITED STATES NATIONAL MUSEUM. 141 



Calicc8 unifacial. The priiiiitivi' t-alice of the coluiiy has already been men- 

 tioned; the subsequent calices are usually solitary, as the lobes are narrow, but two 

 may occur alonjfsidc one another at the same level. Tlie distance between the calices 

 along a face varies from 2 to 6 mm. The lower sides of the calices are very slightly 

 enlarged, even where two occur alongside one another no distinct ridge is present 

 on the lower side. Diameter 1.5 to 2 nnu. 



Outer surface of the eoruUum minutely costatc, the costte low, subequal, dexu- 

 ous, finely granulate, edges rather acute and microscopically dentate. Septo-costa3, 

 small, but still rather large for the size of the corailwm, subequal or alternating in 

 size, somewhat more prominent around the calices, slightly thicker than the spaces 

 between, imperforate. Margins microscopically dentjite; faces with extremely 

 minute granulations. 



Septa from at)out !•> to 20 to a calice, subequal or alternating in size. The 

 inner portions of the margins appear entire, sides minutely granulated. Calicular 

 fossa, shallow, usual diameter 1 to 1.5 nun. 



Columella, well developed, large, tilling very nearly tiie wiiole of the bottom of 

 the calice, composed of several fused processes that maj' be more or less twisted. 



Localities. — 



South coast of Molokai Island: 



Station 3847; depth, 23-21 fathoms; 7 specimens. 



Auau Channel, between Maui and Lanai islands: 



Station 3871; depth, 13—43 fathoms; bottom, fine white sand; 1 specimen. 



Station 3872; depth, 32-43 fathoms; bottom, yellow sand, pebbles, corals; 

 temperature, 74.6° F. ; 17 fragments. 



Station 3876; depth, 28^3 fathoms; bottom, sand, gi-avel; temperature, 74^ F. ; 

 14 specimens, including 8 fragments. 



Cotypes.—Yixc specimens from Station 3847, Cat. Nos. 20892, 20896, U.S.N.M. 



Memarks. — The only noteworthy variation shown by specimens of this species is 

 that the lobes in those from Station 3872 may be as much as 3.5 nun. thick. 



This species somewhat resembles Leptoser is j)ajnj raved (Dana). 



LEPTOSERIS TUBULIFERA, new species. 

 Plate XLII, fig. 3; I'late XLIII. tijr. 1. 



Corallum thin and rather small, very ii'regulai' in shape, foidc^d. with hollow, 

 tubular protuberances on the upper surface, in some instances ramose in appearance. 

 The specimens unfortunately are broken. One measures: Greater distsmce across base, 

 37 mm.; height, 36 nun.; another corallum measures 42 mm. across. A third, of 

 ramose form, is ()4 mm. long; greater diameter of tul)e near the base, 5 mm.; lesser, 

 3 mm. The tubes seem to arise on the edge of the corallimi bj' the margins bending 

 outward, meeting and fusing. The coiallum then grows upward retaining the axial 

 cavity. The tulies may bifurcate. 



The calices are unifacial. A j'oung specimen shows that the colony begins with 

 a single eenti'al calice, those next succeeding in age, though scattered, occur in a 

 more or less deiinite circle. In older specimens the calices are rather irregularly 

 distributed, but still there is a more or less concentric arrangement. They show 



