NO. 1555. HAWAIIAN HOLOTHVRIANS— FISHER. 709 



Genus PANNYCHIA Theel. 



Pannychia Theel, Challenger Holothurioidea, Pt. 1, 1882, p. 88. Type, P. nioseleyi 

 Th^el. 



Tentacles 20, rather large and nonretractile. Lateral ambulacra of 

 ventral surface with large pedicels, disposed in a single row all along 

 each side of that surface. Odd amiiulacrum with a dou]>le row of 

 pedicels. Dorsal surface with a crowded series of numerous scattered 

 slender processes all along each side. Integument with numerous 

 wheels and small wheel-shaped plates. 



PANNYCHIA PALLIDA, new species. 

 Plate LXXVIII, figs. 2, '2a-h. 



Nearly related to P. mo-^eley! Theel. \vhich it resembles in general 

 form and in the character of calcareous deposits, but it differs greath' 

 in coloration, in having the median ventral series of pedicles nuich 

 reduced in number, and in the presence of a well-defined calcareous 

 ring. Number of tentacles unknown, but in form closely resem1)ling 

 those of P. vwseleyi. Anus terminal, mouth turned ventralwards. 

 Pedicels of ventrolateral radii unequal, not particularly large, about 

 20 or less to each radius. Pedicels of median ventral radius smaller, 

 also unequal, apparently absent from anterior third or fourth of bod}^ 

 about twelve to sixteen in luimber, and unevenly scattered, the majority 

 being in hinder half of body ; not so arranged as to suggest a double row 

 as in moseleyi^ but rather a very irregular zigzag or meandering series. 

 Papillfe large and small, about 90 on either side of middorsal line, the 

 longest about 15 mm., the shortest about 2 mm. Ai-ranged nuich as 

 in moseleyi with an irregular flank series of short papilhe and about 

 two irregular series of dorsals on either side. The latter are not so 

 regular as in moseleyi and encroach upon middorsal region. Bod}' 

 wall of medium thickness. Deposits similar to those of moseleyi ex- 

 cept in minor details; large wheels with usually fourteen spokes and 

 the crown in center of nave with five or six radii. Color in life, trans- 

 lucent grayish with a yellowish tinge, especially on ambulacral appen- 

 dages; soles of pedicels abruptly Indian red. Length, 105 mm.; 

 breadth, 15 mm. 



Localities.— Ty^Q (Cat. No. 21222, U.S.N.M.) from Station 4041, 

 west coast of Hawaii Island, 253 to 382 fathoms, gray mud, foramini- 

 fera, bottom temperature 41.6^. Cotype (deposits) from 3994, vicin- 

 ity of Kauai Island, 330 to 382 fathoms, fine gray sand, foraminifera. 



The specimens are not in so good condition as might be desired, 

 inasmuch as the tentacles are scraped off' and the ])ody wall badly 

 lacerated. I do not think, however, that there are any more pedicels 

 to the midventral radius than I have indicated. They are very irregu- 

 larly arranged, especially as to distances between the different ones. 



