302 LAGISCA FLOCCOSA. 



slight enlargement towards the tip, and the latter is attenuate. The cilia are numerous 

 rather short and clavate, and extend beyond the distal pigment-bar. They become more 

 slender posteriorly, but have the same structure. In these translucent organs the areoke 

 of the hypoderm (epidermic granular layer) are very visible. The long first ventral 

 cirrus is ciliated like one of the dorsal, and some of the succeeding ordinary forms 

 show a few cilia. These gradually disappear and leave the cirrus smooth throughout 

 the greater part of the body. 



Some from Guernsey have the dorsal bristles covered with a reddish-browm or dull 

 orange granular coating, from the surface of which minute algoid filaments project. 

 Such would seem to be parasitic. A similar growth occurs on the dorsal bristles at 

 St. Andrews. 



In my notes of November, 1873, at St. Andrews, this species (and the preparation 

 accompanies) is described as phosphorescent, but recent examination, both when laden 

 with ova in January and in the warmer months, such as July, has not borne out this 

 description. In the preparation the bristles, especially the dorsal, are covered with a 

 parasitic granular growth. 



Though this form is more plentiful in the south, the size of some dredged off Balta 

 is quite as large as elsewhere. 



In a specimen from Lochmaddy in which five of the posterior feet of the right side 

 had been removed, long papillse from the dorsal border (cirri?) and shorter papillae 

 from the ventral indicated regeneration. 



Reproduction. — A specimen from St. Andrews in November was laden with ripe ova, 

 so that the breeding season would seem to be in winter, as in the case of Harmothoe. 



Variety. — A very distinct variety comes from the ' Porcupine/ 1869, 173 fathoms, 

 on muddy sand, bottom temperature 49*6° ; from 45 fathoms, eight miles N.W. of Cape 

 Sagres, ' Porcupine,' 1870 ; off the Hebrides, 1866, Dr. Gwyn Jeffreys ; West Sands, St. 

 Andrews, 1867 (R. M.) ; and 90 — 25 fathoms, 30 — 50 miles west of Valencia, Ireland 

 (Prof. Haddon). Abundant in various parts off Shetland, Dr. Gwyn Jeffreys, 1867-8. 



The pigment on the scales is similar ; that on the naked segments posteriorly, how- 

 ever, diverges, for it forms a single fan with a posterior bar only. Moreover, the 

 papilla for the dorsal bristles has black pigment. No appreciable change is observable 

 in the structure of the scales. The distinguishing feature is the condition of the dorsal 

 bristles, which, instead of forming the elongated tip so characteristic of the typical 

 form, end bluntly, so that the whole tip is broad, with a very short, bare portion at the 

 tip. The spinous rows are as closely arranged as in the normal form. The ventral 

 bristles and cirri do not differ from the typical example. 



A form dredged by the 'Porcupine' in 173 fathoms, 1869, and in 160 fathoms, 17th 

 August, 1870 (No. 42), differs from Lagisca floccosa and its variety in having no distinct 

 bosses or globular papillse on the scales posteriorly, while considerable papilla3 occur 

 anteriorly ; the scales, moreover, having much larger spines, which show a tendency to 

 be arranged in rows in the reniform scales, the largest being near the posterior border. 

 In the first pair of scales the spines are larger, and the short cilia extend at intervals all 

 round, while a few short cilia occur along the outer and posterior edge. The ventral cirri 

 have a few clavate cilia. The bristles of the dorsal branch of the foot (Plate XXXVIII, 



