2G 



fact that they collapse greatly when taken from the water. The 

 circumference of the body given above may, therefore, be con- 

 siderably too small. In that case the figure represents the body 

 more slender than it should be. The head was probably at least 

 equal to one-fifth the length of the body. The eight hoiter 

 arms, when fresh, were, according to Mr. Harvey's measure- 

 ments, six feet long and all of equal length, but those of the 

 different pairs were respectively ten, nine, eight and seven inches 

 in circumference. In alcohol they have shrunk considerably, both 

 in length and diameter. They are three-cornered or triquetral in 

 form and taper very gradually to slender acute tips. Their inner 

 faces are occupied by two alternating vows of large obliquely 

 campanulate suckers, with contracted apertures surrounded by 

 broad, oblique, marginal rings, armed with strong, acute teeth 

 around their entire circumference, but 

 largest and most oblique on the outside 

 (fig. 3). These suckers gradually di- 

 minish in size to the tips of the arms, 



largest of these suckers are said by Mr. 

 King of sucker from' 6 i,ort Harvey to have been about an inch in 

 arms of No. 5. diameter, when fresh. The largest of 



their marginal rings in my possession are -Go of an inch in 

 diameter, at the serrated edge, and -75 beneath. The rings of 

 the smaller suckers are more oblique and more contracted at 

 the aperture, with the teeth more inclined inward, those on the 

 outside margin being largest. The two long tentacular arms are 

 remarkable for their slenderness and great length when com- 

 pared with the length of the body. Mr. Harvey states that they 

 were each 24 feet long and 2-75 inches in circumference when 

 fresh. In the brine and alcohol they have shrunk greatly, and 



the slender portion varies from 2-25 to 3-25 inches. These arms 

 were evidently highly contractile, like those of many small spe- 

 cies, and consequently the length and diameter would vary greatly 

 according to the state of contraction or relaxation. The length 

 given (24 feet) probably represents the extreme length in an ex- 

 tended or flaccid condition, such as usually occurs in these animals 

 soon after death. The slender portion is three-cornered or trique- 



