770 BULLETIN 82, UNITED STATES NATIONAL MUSEUM. 



Plate 63. 



Fig. 1345. — An unusually large specimen of Stylometra spinifera from off noitUern Cuba, 157 

 fathoms (Albatross Station 2336), with a species of HcalpeUum attached to the 

 cirri. Natural size. 

 1346. — An unusually well-developed specimen of Piilometra mulleri from Sydney, New 

 South Wales, with Polytrema miniaceum growing on two of the right-hand cirri. 

 Natural size. 



Plate 54. 



Flo. 1347. — A specimen of Calyptometra lateralis from off Niihau, Hawaiian Islands, 378-426 

 fathoms {Albatross Station 4179), showing, on the right profile, a large myzostome 

 cyst. Natural size. 

 1348. — A twelve-armed specimen of Heliometra maxima from off southeastern Saljhalin, 64 

 fathoms (Albatross Station 5017). 



Plate 55. 



Fio. 1.349. — NotocrinHs ririlis. proximal portion of arm of a fully grown female, showing the 

 genital papilltp iu the angles between the pinnules and the ambulacral furrow. 

 (After Mortensen.) 



1350.- — Xotocrinus ririlis, proximal portion of arm of a male showing the swelling produced 

 by the testes and the small genital pores in the angles between the pinnules and 

 the ambulacral furrow; the lowe.st pinnules are ungrooved. (After Mortensen.) 



1351. — Notocrinus ririlis, proximal portion of arm of a female with the ventral surface re- 

 moved and the marsupia opened so as to show the embryos within them : proximal 

 to each marsupium is an ovar.v. (After Mortensen.) 



1352. — Notocrinus ririlis, proximal portion of arm of a male with the ventral surface par- 

 tially removed to show the size and shape of the testes. (After Mortensen.) 



Plate 56. 



Fig. 1353. — Peutacriuoid larva of IJathrometra prolixa. (After Mortensen.) 

 1354. — Pentacrinoid larva of Heliometra glacialis. (After Mortensen.) 

 1355.— Pentacrinoid larva of Antedon petastis. (After Mortensen.) 



Plate 57. 



Fig. 135C>.—8aMnella ptilocrinicola attached to calyx of Ptilocrintis pinnatus. (After Bartsch.'i 



X IJ. 

 1357. — Sahinella ptilocrinicola attached to calyx of a large specimen of Ptilocrinus pinnatus. 



showing the distortion of the latter. (After Bartsch.) X IJ. 

 1358. — Sabinella ptilocrinicola attached to calyx of Ptilocrinus pinnatus. (After Bartsch.) 



X 1}. 

 ^S59.~Sabinella ptilocrinicola. (After Bartsch.) X about 6. 

 1360. — T.vpe specimen of Sabinella ptilocrinicola. (.-Vfter Bartsch.^ X about G. 

 1361. — Sabinella ptilocrinicola. (After Bartsch.) X about 6. 

 1362. — Stilifer (Mucronnlia) bathymctne, attached to arm base of liathymetra, sp. (After 



Hartlaub.) X 4J. 

 1363. — Portion of disk of speeinu'n of Cnnianthina scMegclii with cysts of Mtnosioiniim 



platypus. (After P. H. Carpenter.) X 2. 

 1364. — Disk of specimen of Comatula rntalaria with an isopod visible through the anal 



opening. (After P. H. Carpenter.) X 2. 



