306 LAGISCA JEFFKEYSII. 



Length 16 mm., but the specimen had the posterior extremity regenerated, and 

 therefore was probably considerably longer. 



The head (Plate XXVII, fig. 10) is more elongate than in L. floccosa, and the 

 peaks in front terminate bluntly. The posterior pair of eyes are of moderate size, and 

 lie just in front of the collar; the anterior pair are somewhat further forward than in 

 the species mentioned, are larger than the posterior pair, have a lens-like centre, and 

 are more or less lateral in position. The median tentacle is absent. The lateral tentacles 

 are short and subulate, being lateral in position, and only slightly beneath the bases of 

 the former. They have a series of cilia with clavate tips. The tentacular, like the dorsal 

 cirri, are rather slender, with a filiform tip and a series of clavate papillae, which do not 

 commence till the basal third of the process is reached, and extend within a short 

 distance of the filiform tip. They a,re in moderate number, and diminish at each end of 

 the series. The palpi are pale brown, and have rows of minute papillae with expanded 

 nodular tips. Two of these rows are dorsal. 



The body is somewhat narrowed anteriorly, and posteriorly appears to have been 

 recently regenerated after the twenty-fourth foot. The only colour exists in the dorsal 

 fold of the mouth, which is brownish. 



Scales (Plate XXXII, fig. 7). — The first pair of scales are rounded, and under a lens 

 are minutely speckled as if variolated. This condition, however, is due to hypodermic 

 structure, and does not affect the surface. The latter has a series of minute spines, 

 which densely cover the outer and posterior part of the scale. Even in these scales a 

 distinct fold occurs anteriorly, but no cilia on the edge. The other scales present 

 are rather large, ovate-reniform in outline, and have a distinct fold from the scar of 

 attachment to the hilus at the anterior border. They are faintly brownish in hue (in 

 spirit), and on a dark surface — under a lens — are speckled throughout the posterior half 

 with pale specks which simulate pustules. The outer border has a well-marked series of 

 long cilia, which are not dilated at the tip. The smoothness of the edge of the scale, 

 with this exception, is noteworthy. 



Feet. — The second foot shows rather short and straight dorsal bristles, with distinct 

 spinous rows as in Lagisca floccosa, var., from the 'Porcupine,' 1 with a very short 

 smooth portion of a bluntly conical shape at the tip. The ventral bristles are slender, 

 with elongate spinous regions and attenuate tips. 



In the third foot the ventral bristles are stronger, and the bifid condition distinct in 

 many — the secondary process passing nearly straight towards the tip. 



In the typical foot the dorsal bristles (Plate XXXVIII, fig. 7) are of moderate 

 length, with well-marked spinous rows and a very short smooth tip. They are nearly 

 straight, with the exception of a few at the inner border of the tuft. Loxosomse and algoid 

 growths are common on these bristles. The ventral division has a dense group of pale 

 bristles with elongated shafts, and, though the upper forms (Plate XXXVIII, fig. 8) 

 have long tips, on the whole with rather short spinous regions, as shown in one from 

 the middle of the foot (Plate XXXVIII, fig. 9). These bristles have very distinct spinous 

 rows, a short bare tip with a strongly curved hook at the end, and in the majority a 

 secondary process which is directed nearly straight distally, so that they differ quite from 



1 Vide p. 302. 



