62 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxiii. 



Bahitat.—Japsin (Semper, 1868). Gulf of Georgia (Lampert, 18S5). 

 Sitka (Clark, li)02). Shakan, Summer Strait, southeast A[aska{Alba- 

 iross Alaska Salmon Investigations, 1903). 



lo. PANNYCHIA MOSELEYI Theel, 1882. 



1882. Pannychia moselet/i Theel, pp. 88-90. 



(?) 1894. Pannychia moseleyi var. henrice Ludwig, pp. 95-99. 



1901. PannycMa moseleyi Sluiter, pp. 71-72. 



July 31, 1903.— One specimen; Station 4265; lat. 56° 56' 30" N., long. 

 136° 10' 0" W.; 590 fathoms; bottom, temperature 38.2°, green mud, 

 rocky. 



Form. — Flattened \ entrally, arched dorsally. 



Dimensions of hody. — 97 mm. long; 13 mm. wide; 10 mm. dorso- 

 ventral diameter. 



Color. — In alcohol heliotrope-purple above, white below. Pedicels 

 and papilloB whitish, ends- cream color. Tentacles like the body on 

 the stalks, but with the ends cream color. 



Nwmber of tentacles. — Twenty, three broken off. 



Distribution of pedicels. — Thirty -two in the right lateral ventral 

 radius. Twenty-eight in the left lateral ventral radius. In both of 

 these rows the posterior pedicels are smaller. Twenty-four in the 

 mid-ventral radius. 



PapUlie. — Length, 10 nmi.; diameter, 0.4 mm. About lYO on each 

 side of the l)ivium, being somewhat thicker along the radii. In the 

 middle third of the mid-dorsal region there is a naked longitudinal 

 space only 2 mm. wide. At the extreme anterior end of the bivium 

 there are three papillae on either side and in the line of the madrepojic 

 papilla one on either side, each with a stiff' firm wall, thicker base (1 

 mm. diameter), and with the stalk colored heliotrope-purple. 



Amj>iill86. — Of the pedicels, covered in the body-wall. Of the 

 papillte, branched, projecting into the coelom. 



Thickness of body wall. — Ventrally 0.5 to 2 mm. 



Calcareous spicules. — In general like those described by Theel, 18S2, 

 and for the details I refer to his paper. 



Spicides of the body wall. — In the bivium are found the large wlieels 

 of 13 or 14 spokes, but no spicules similar to the small wheel shaped 

 plates or small round plates with 35 to 50 holes. In the triviuui, to 

 the contrary, the first-mentioned large Avheels are lacking, whih^ the 

 small wheel-shaped plates and perforated plates with many holes, 

 together with straight or arcuated, simple or branched, spinose sup- 

 porting rods are present. 



Spicules of the amhdacral appendages. — Pedicels. — Large wheels, 

 small wheel-shaped plates, small round perforated plates, simple or 

 branched, spinose supporting rods, large irregular plates at the top of 



