52 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. XXXIII. 



10 mm. In the other three the longest are 5 mm. and the shortest 

 1.5 mm. 



Stone canal. —Much coiled, adherent to the dorsal mesentery. The 

 madreporite (fig. 3) 'has a number (in one case 27) of 

 transverse folds, which project from the mesentery. 



Gonads. — In two tufts, one each side of the mesen- 

 tery; tubes dichotomously branched. Of the speci- 

 mens with gonads, two are female and one male. 

 Retractor muscles. — Well developed. 

 Ciliated funnels. — On the mesentery, near the body 

 wall, similar to those of C. Ipeivs (Duncan and Sladen, 

 1881, Plate I, fig. 17). 



Habitat. — Queen Charlotte Sound, off Fort Rupert, 

 Vancouver Island, British Columbia; Boca de Quadra, 

 vicinity of Naha Ba}^ Behm Canal, junction of Clar- 

 ence Strait and Behm Canal, southeast Alaska. 

 [Alhatross Alaska Salmon Investigations, 1903.) 

 These localities constitute the type region. 

 Type.—Cat. No. 25003, U.S.N.M. 



Fig. 3.— Chiridota 

 albateossii. 

 Stone canal and 

 madreporite. 



(X 29.) 



3. ANKYRODERMA JEFFREYSII Danielssen and Koren, 1879. 



June 20, 1903— Six specimens; Station 4198; lat. 49° 18' 30" N., 

 long. 123° 46' 12" W. ; 157 to 230 fathoms; bottom temperature, 46.8°, 

 soft, green mud. July 6 — One specimen; Station 4224; lat. 55° 9' 24" 

 N., long. 130° 41' 48" W.; 156 to 166 fathoms; bottom temperature, 

 43.7°, dark, green mud. July 7 — One specimen; Station 4230; lat. 

 55° 35' 13" N., long. 131° 50' 11" W. ; 108 to 240 fathoms; bottom tem- 

 perature, 42.4°, rocky. 



Net one anchor was found, albeit in most cases a stump of varying 

 length is present. This I take to be the proximal part of tlie stock of 

 the anchor, the distal 

 part, with the arms 

 having been broken off. 

 As Theel, 1886 (p. 49), 

 suggests, such a stump 

 with broken end might 

 easih^ have been taken 



for the long process of the '"cups" by v. Marenzeller in descri})ing 

 his ^4. roretzil. On many of the "spoon-like " rods there arises, about 

 the middle of the widened part of the rod, a sort of rudimentary 

 spire, or process (fig. 4), which hitherto has not been described. In 

 some specimens a degeneration has affected the ""spoon-like" rods so 

 that they are wholly or partially absorbed, with, at the same time, a 



-ANKYRODEKMA JEFFREY.SII. " SPOON'-LIKE " KOD WITH 

 RUDI.MENTARY SPIRE. (Xlll.) 



