2i McMURRICH 



number of rather low tubercles arranged in about twelve lon- 

 gitudinal rows, the individual tubercles of each row being 

 separated by considerable intervals. Higher up, where the 

 column begins to enlarge, the rows are more numerous, and 

 at the upper part, the tubercles become decidedly papilliform. 

 They are arranged in about 96 rows and have particles of sand 

 and shell adhering to them, their verrucal nature being thus 

 demonstrated. 



By dividing the column longitudinally, it became evident 

 that there were no acrorhagi, the papillae of the margin being 

 the uppermost verrucae of the longitudinal rows. 



The number of the tentacles could not be determined with 

 certainty. They were simple, rather short and acuminate, and, 

 as Dana has stated, are ectacm?eous. The disk and mouth 

 were hidden in all the specimens. 



Color. — The coloration as stated in Dr. Calkins' notes differs 

 a little for that described by Dana. It was *' greenish-yellow " 

 at the upper portion of the column and " yellowish-white " lower 

 down, while the tentacles are stated to have " scarlet or purplish 

 tips." According to Dana, who quotes a description by Drayton 

 " the general color of the exterior of the body is a yellowish- 

 green. The tubercles have a dark sap-green color ; they become 

 obsolete below, yet the green line continues to the base of the 

 animal. The colors of the tentacles are various and shaded 

 like those of the prism ; the disk is dull greenish, becoming 

 darker towards the base of the tentacles, and the mouth is flesh- 

 colored." 



Size. — In the preserved specimens the base measured 2.5 cm. 

 in diameter. The column a short distance above the limbus, 

 at its narrowest point, measured i cm. in diameter, but above it 

 equalled the diameter of the base or even reached a diameter of 

 2.8 cm. The height of the column was about 6.0 cm. 



The inner tentacles were about 0.5 cm. in length, while the 

 outer ones measured 0.65-0.7 cm. For the expanded animal, 

 Dana gives the greatest diameters of the column as about 5.5 cm. 

 (2j^ inches), while the outer tentacles he states to have been 

 2.5 cm. (i inch) in length and the inner ones 1.25 cm. (^ inch). 



