1411 KKCFNT MADREPORAKJA OF TFIE HAWAIIAN ISLANDS AND LAYSAN. 



Synaptic-ulu vcrv jibuiKliuit between the septo-eostm, and there are some 

 dissejiiiuents. Caliciilar fossa, narrow, rather deep. ColumeHa poorly developed, 

 composed of a few papilUv or may be absent. 



Local it i('><. — 



South coast of Molokai Island: 



Station 3S'J3; depth. TS-'i2'2 fathoms; liottom. fine sand, pebbles; temperature, 

 (?1»'- F. ; 1 specimen. 



Station oS4S: depth. -tS-Tinatlioms; bottom, sand, gravel; temperature, 71.1'^ F.; 

 1 sp(>cimen. 



Aiiau Cliannel, between Maui and Lanai islands: 



Station I'.STO: depth. ii8-4:3 fathoms: bottom, sand, gravel; temperature, 74^ F. ; 

 3 specimens, 2 of which have a considerable number of young attached to their l»ases. 



Northeast coast of Hawaii Island: 



Station 4n.')3; depth, 2(5-29 fathoms; bottom, tine, gray sand; 1 dead specimen 

 with unusually large calices, and 2 l)roken young specimens. 



Station 4054; deplli, 2H-5n fathoms; l)ottom, coarse coral sand and corallines; 

 1 young specimen. 



The ct>nditions of life most favoral)lc to this species are a depth of water 

 between 26 and 4o oi- 50 fathoms, a temperature a little over 70'-' F., and a clean, 

 sandy or pebbly bottom. 



Ti/pe-s. — Three specimens and attached young, Stiition 3876, Cat. No. 20885, 

 U.S.N.M., and 1 specimen. Station 3823, Cat. No. 20886, U.S.N.M. 



Reynm^Ax. — This species is to be differentiated from L. /latranens/s- chiefly l)y 

 the rougher margins and the very perforate charactei- of its septo-costa;. 



LEPTOSERIS DIGITATA, new species. 



I'late XLII, ligs. 1. 2. 



Corallum small, digitiform. The young coralhun possesses a single calice. and 

 is inversely conical in shape. The margin of the uni-caliculate corallum becomes 

 lobate, each lobe having a width of about 3 mm. As these lobes grow they become 

 secondarily lol)ed and crispate, the iiuier surfaces concave, the outer convex. The 

 first formed lobes in the larger specimens may be as much as 2 mm. or a little more 

 in thickness, but are very thin and fragile at the edge. 



MeasiirriiienlK. 



