176 Prof. Maiitosli's Notes from the 



Avise has several clavate papillaj similarly ciliated (PI. III. 

 fig. 1), and its bristles- are characterized by their strength and 

 the shortness of the terminal pieces. The shafts of the 

 bristles, moreover, diminish in strength from above down- 

 wards, as seen by contrasting the second upper bristle (PL III. 

 fig. 2) and the adjoining series (PL 111. fig. 3) with that 

 from the inferior series (PL III. fig. 4), those at the 

 ventral edge being less than half the diameter of the upper. 

 The rows of spikes on the distal convexity of the shafts like- 

 wise decrease in number from above downwards. The stout 

 superior bristles have terminal pieces of two or tliree divisions 

 and a well-marked claw and secondary process at the tip. 

 Towards the inferior edge the terminal pieces lengthen, and 

 three divisions are present, the tips of all being bifid. 



The specimens, which were captured in July, were laden 

 with large ova. 



In his list of the Annelids of the " Osterfjorden " Dr. Ap- 

 pellof * includes Stltenelais atlaniica^ Mcl.f ; but this species, 

 while approaching the Norwegian in regard to the scales, 

 wholly diverges, tor instance, in the minute structure of the 

 bristles in the ventral division of the foot. 



The other species — Stltenelais heterochceta — has a similar 

 range in depth, viz. from 40 to 180 fathoms. 



The head is somewhat rounded, with prominent lateral 

 lobes separated by an ^-shaped central region, eyeless in the 

 preparations. Tlie median tentacle arises from the anterior 

 border, is proportionally larger and longer than in Slhenelais 

 limicola, and ends in a filiform tip. The lateral tentacles are 

 considerably shorter, but also have an attenuate tip. The 

 superior tentacular cirrus is about the length of the median 

 tentacle, but the ventral is considerably shorter. The ciliated 

 process (''cuilleron," Pruvot and Racovitza) is toisgue- 

 sliaped. The palpi are even longer and more tapered than 

 in S. limicola. The first foot (having the foregoing pro- 

 cesses) presents a prominent ctenidium dorsally. 



The body is larger than in S. limicola and apparently 

 longer, but no example is complete, though more than 100 

 segments are present in the most perl'ect, which wants a con- 

 siderable portion of the tail. It is rounded dorsally, flattened 

 ventrally, and is covered by the translucent scales and 

 gently tapered towards the posterior end, A nephridial 

 eminence is present, but no papilla. The proboscis has two 

 oblique dorsal ridges starting from within outwards at the 

 commencement of the distal fourth, and traces of similar 



* Bergens Museum Aarbog, no. xiii. p. 10. 

 t Trans. Zool. Soc. ix. p. 405. 



