BULLETIN 59, UNITED STATES NATIONAL MUSEUM. 147 



Station 385.5; depth. li!7-13t» futlioms; hottoiii. riiio l)r(>wii sand, (rravol: tem- 

 perature, 65.."> F. ; .specimens (tlie lari^est number ol)tain('d at any one station). 



Pailolo Channel, between ^lolokai and Maui islands: 



Station 38.50: depth, 1:^7 fatlioms: Ixittom, line sand, yellow nmd: temperature, 

 66.5' V.\ '2 specimens. 



Station 4:101; (iepti.. 1:^2-143 t'atii<ims; lidttoni, coi-al sand, siiells, foraminifera; 

 tein])eraturc, 59.7'' F.; 1 specimen. 



Noith coast of Molokai Island: 



Station 3906; depth, 66-96 fathoms; })olt()m, jiray .sand, shells, pebbles; tem- 

 perature, 72"^ F. ; 1 specimen. 



West coast of Hawaii Island: 



Station 4045; deptli. 147-19S fathoms; bottom, coral sand, I'onnanifera; tem- 

 l)eratiue, 49- F. ; 3 specimens (includinu- the larirest collected). 



Northern coast of ilaui Island: 



Station 4080; depth. 178-202 fathoms: Ixitiom. oray sand, foi-manifera; tem- 

 perature. 56.4 F. ; 1 specimen. 



In its conditions of life, tJiis species may ranye in depth fioni ()(>-2I2 fathoms; 

 the Ijottom in each instance was saixly: tlie temperature rano-es from 49" to 72' F. 



Genus ENDOPACHYS Lonsdale. 



184.5. Endopachjs (part) Loxsdale, Quart. Jour. Geol. Soc. London, I, \i. 214. 



1848. Endopachys Milne Edw.^rds and Haime, Ann. Sci. Nat., .Sienie ser., Zool., X, p. 81. 



18.57. Endopachys Milne Edwards, Hist. Xat. Corall., Ill, p. 97. 



1884. Endopachys Dvsc AS, Jour. Linn. Soc. London, Zool., XVIII, p. 176. 



1900. RheHopsammia Vaughax, .Mon. XXXIX, V. S. Geol. Survey, p. 183. 



1900. Endopachys Vaughax, Mon. XXXIX, U. S. Geol. Survey, p. 186. 



190:5. Endopachys Vavghan, Proc. Biol. Soc. Washinjrton, XVI, p. 101. 



In the last reference cited. 1 jiublislied the following note: 



My genus Rhectopsammla was Iiased on the young of Endopachys maclurei (Lea), but I discovered 

 my mistake after the publication of tire Monograjih. The genus Endopachys has been characterized 

 as showing no evidence of attachment. My I{hcc(opsaminia is the attached young of Endopachys. 

 The.«e young individuals often attain a height of 6 mm., then the upper portion of the corallum 

 becomes separated from the pedicel. Indications of the detachment scar may freciuently be seen quite 

 late in the life of some specimens. Usually it is ultimately completely obliterated by the deposition 

 of calcareous substance over it by the edge zone of the coral extending downward, enveloping the 

 base. 



ENDOPACHYS OAHENSE, new species. 



Plate XLIV, tigs. :!, Z<t. 



Corallum subcuneate, sides curving gradually to the apex of the base, edge of tiie 

 liase obtuse, rounded. There are no facial tul)ercles oi- lateral ci'ests. Basal scar 

 oi)liteiated. Transverse outline elliptical. Greater diameter of calice. 16.5 mm.; 

 lesser, about 12 nun. (one side of the calice is broken, this m<'aNurcMient is therefore 

 only an apj)roximation): height of the corallum, 17 nun. 



The wall is externally costat(>. costa' corresponding to all septa, more distinct 

 near the margin of the calic(>. indistinct near the base. They arc low. comparatively 

 wide, subacute or rather round(>d on the edge, grarndat(> and pei-forate, subeipial or 

 equal in size, occasionally showing alternation in size. Intercostal fniM'ows narrow. 



