22 ASCIDIID.E. 



Ocniis GL.A1VDUL.4, Stimpson. 1852. 



Body globular, always free, and thickly coated with sand, mud, 

 or other extraneous substances. Apertures on tubes, the bran- 

 chial with four lobes, the anal square. Branchial sac with few 

 distant plications. 



Glandula mollis. 



Plate XXII. Fig. 317. Plate XXIV. Figs. 328, 329. 



Glandula mollis, Stimpson, Proc. Bost. Soc. iv. 230 (18r32) ; Check Lists, 2. (18G0). 



Body globular, but often considerably flattened, soft, and flex- 

 ible. Test very thin, transparent, and thickly covered with loose 

 sand. Diameter half an incli, usually less. 



Dredged abundantly on a sandy bottom in ten fathoms, off 

 Clieney's Head, Grand Manan. (^Stimpson.) 



The drawings by Mr. Burkhardt, copied on the plate, were re- 

 ceived without name. If they represent this species, they show 

 it to vary considerably in form. 



Glandula fibrosa. 



Plate XXIII. Fig. 323. 



Glandula Jihrosa, Stimpson, Proc. Bost. Soc. N. II. iv. 230 (1852); Check Lists, 2 



(1860). 

 Glandula (jlutimms, Packard, Invert, of Laltr. in Mem. Bost. Soc. N. II. i. 277, no dcscr. 



(1867). 

 Cynthia glutinans, Moller, Ind. Moll. Gr. 21 (1842). 



Test thin, but very tough and leathery, covered with numerous 

 fibres resembling cotton, which serve as a framework or attach- 

 ment for the hard, thick coating of mud, in whicli this species is 

 always found incased. Thus a ball is formed of about one inch 

 in diameter, twice tliat of the body alone. The tubes extend only 

 to the surface of the l)all. It is an exceedingly tougli, hard spe- 

 cies, and when divested of its covering will bear the weight of 

 several pounds without bursting. 



Dredged in thirty-live fathoms on a muddy bottom, in tlie Hake 

 Bay, off Grand IVIanan. ( Stiiiipson.} 



The figure referred to above is drawn from a specnmon preserved 

 in alcohol, received by Dr. Packard froniLutken, under the name 



