246 Mr. J. W. Piyde on Annelida PoJychceta 



2 inches, being pinkish brown on tlie dorsum and pale pink 

 on the ventrum and at extreme anterior end. The body-wall 

 is smooth, firm, and thick, and agrees generally with that 

 of Ammolrypane graciie^ which, however, differs from it in 

 having the intermediate pedicle — between the dorsal and 

 ventral longitudinal muscles — short. The ventral groove, 

 running from mouth to anus, is fairly deep, and is flanked by 

 thick brood-ridges, which disappear at the scoop-shaped hood 

 surrounding the anus. Along each border of the hood there 

 are four cirri, while a pair of larger and thicker cirri, with a 

 slender cirrus between them, are situated at the base. 



The feet, with bristles and branchise, are placed laterally in 

 close relation to the ventral ridges. In several they seem to 

 occupy lateral shallow grooves formed by the ridges on the 

 ventral side and by the convexity of the dorsum on the other. 

 The bristles agree with the type-examples, but the branchiae 

 do not arise on the same foot in every form, this probably 

 being due to the destruction of these organs by the fire. 



In transverse section the cuticle is very dense, but the 

 hypoderm is not strongly developed. The nerve-area, situated 

 ventrally, appears as a transverse band, and so differs from 

 that of Ammolrypane gracile^ which is ovoid. The longitu- 

 dinal dorsal muscles have regularly arranged fasciculi and 

 slant obliquely along the dorsal arch from a kind of median 

 raphe. 



The specimens were immature, and the contents of the 

 intestine were mud, sandy particles, and debris. In the 

 intestine of a 'Challenger' specimen was sandy mud, with 

 diatoms, broken sponge-spicules, fragments of Echinoderni 

 spines, and Foraminifera. 



Family Scalibregmidae. 



Genus Eumenia. 



Eumenia {Lipohranchus) Jeffrey sii, M'Intosh. 



This species is the sole member of the above family in the 

 collection, and it is surprising that Scalibregma injlatum, a 

 form having a wide distribution, does not occur. The fol- 

 lowing table gives the data connected with the hauls : — - 



