NO. 1608.] NEW SPECIES OF CRINOIDS—CLARK. | 999 
= 
lo. 39 63.-(Same locality) ; 319 Da Thorne 
Thalassometra delicata. 
Station No. 3985.—Off Kauai; 477-430 fathoms. 
Thalassometra gigantea. 
Station No. 3992.—(Same locality) ; 400-500 fathoms. 
Psathyrometra congesta. 
Station No. 4105.—Kaiwi channel; 314-355 fathoms. 
Trichometra vexator. 
Station No. 4107.—Kaiwi channel; 350-355 fathoms. 
Thalassometra crassicirra. 
Station No. 4122.—Southwest coast of Oahu; 192-3852 fathoms. 
Thalassometra fishert. 
Zenometra triserialis. 
Station No. 4157.—Vicinity of Modo Manu; 762-1,000 fathoms. 
Decametrocrinus rugosus. 
Station No. 4177 —Oft Niihau; 451-819 fathoms. 
Charitometra lateralis. 
uhau; 878-426 fathoms. 
Charitometra lateralis. 
Station No. 4180.—Off Niuhau; 426-417 fathoms. 
Charitometra lateralis. 
Station 
Station No. 4175 
DESCRIPTIONS OF NEW SPECIES REFERRED TO, AND SOME 
ADDITIONAL SPECIES FROM THE PACIFIC OCHAN. 
TRICHOMETRA ASPERA, new species. 
Centro-dorsal hemispherical or rounded-conical, nearly covered 
with cirrus sockets. 
Forty to 60 cirri 15 mm. long, with 25 to 30 joints; first joint short ; 
second joint about as long as broad; third to eighth joints about 
twice as long as the proximal diameter; these joints are rather 
strongly “ dice-box shaped,” with flaring and overlapping distal 
ends, which are especially prominent in the median dorsal part, 
though they can scarcely be called spinous; following joints increas- 
ing in diameter from the proximal to the distal end, where they over- 
lap somewhat, and gradually decreasing in length, from the twelfth 
onward being about as long as broad; while the distal dorsal border 
is somewhat prominent, it can never be considered a true spine; 
opposing spine arising from the entire dorsal surface of the penul- 
timate joint, situated at its distal end, its length rather less than the 
diameter of the joint; terminal claw usually rather longer than the 
penultimate joint, moderately stout, and comparatively slightly 
curved. There are usually a few small cirri situated near the pole 
which may be less than half as long as the “ long mature ” cirri, and 
have 10 or 12 very slender and much elongated joints, with greatly 
expanded articulations. 
