166 PHERECARDIA LOBATA. 



caruucle extending over the three anterior segments , con- 

 sists of a median and a lateral portion. The median part 

 resembles much the caruncle of Amphinome ; it is a ton- 

 gue-shaped organ, broad and cordate in front, narrowing 

 backward. It bears on each side 7 lamelliform lobes , which 

 are folded on both sides and show a gradual decrease of 

 length from the first to the last. The head is furnished with 

 an unpaired tentacle, situated in the notch of the carun- 

 cle , and with two short tentacles placed in front of it ; 

 there are also two palpi agreeing in length with the ten- 

 tacles. The mouth is surrounded by the ventral sides of 

 the four anterior segments. The branchiae commence on 

 the first body-ring and are about equally developed over 

 the whole length of the body ; they consist of a few short 

 stems dichotomously branched and dividing in a dense tuft 

 of short , thick , cylindrical filaments. The branchial tuft is 

 situated at the posterior side of the dorsal bristle-papilla 

 and is almost entirely hidden by the bristle-fascicle , but it 

 projects somewhat as well on the dorsal as on the ventral side. 

 The dorsal cirrus is long and consists of a subulated ba- 

 sal segment and a longer, slender terminal portion; the 

 ventral cirrus is short. The dorsal bristle-fascicle extends a 

 little beyond the corresponding cirrus and consists of: a. 

 numerous , fine , capillary bristles ; — h. some stouter , smooth 

 bristles and — c. others , which are serrated along one side ; 

 those serrations , in a surface view , have the shape of an 

 Y. The ventral bristle-tuft is not so developed as the dorsal 

 one ; its bristles are not very stout , rather long ; they are 

 furnished with a short terminal portion , forming an obtuse 

 angle with the shaft. 



There are stout hastate spines like in Eurythoë. 



Habitat unknown. 



Genus Chloeia Savigny. 



Chloeiaflava Pallas. — Baird, loc. cit. p. 230. — M'Intosh, 

 loc. cit. p". 8, pi. Ill, figs. 1 and 3; pi. Ia, figs. 7—9. 



Notes from the Leyden ]VItiseu.m, Vol. "VIU. 



