Ga'Ji/ Marine Ltihordtori/^ St. Andrtur,. A'} 



or j)ro\v is rntiiulcd :iiul blunt, striae pass from tlio small 

 tectli on the crown alonj; the posterior |)art of the neck. 



The ccplialie rcjiion presents a broad horseshoe-fold over 

 the month — continnous at its outer and inferior edf^e ^ith 

 the hirj^cr eoUar wliic-h bounds the tent;icuiar area posteriorly. 

 A deep {groove, wide in the middle and 1ai)cred at eacli 

 side, is thus formed. IJelow the mouth is a short fold 

 bounded by the first-mentioned horscshec-areh at each side, 

 and ventral to this a broader band or lip. 



'I he body has a normal shape, viz. eidar;j:ed anteriorly and 

 then ji;ra<h!ally tapcrin^j^ to the posterior end. There arc 

 seventeen pairs ot" bristlc-luindles, which coinmci.ee on the 

 fourth sej^ment and extend to the twenty-first. The winged 

 tips do not show serrations under a power of 350. Each of 

 the thiec bianchijc arises from a single basal portion, and 

 extends as simple slightly curled filaments (herefrom, the 

 tips being sliiihtly tapered. They seem to be consideral)ly 

 shorter than those of Amphitrite cinafa, O. V. M. Twelve 

 vi'utral shields or plates occur in front, the first being im- 

 niediately liehind the posterior labial process, and a ridge 

 (marking the nerve-eord) is continued from the last along 

 the ventral groove to the posteiior end. 



Marenzeller describes the colour of the body as reddish 

 grey, br(j\\nish in front, and ])ale posteriorly. Tentachs 

 streaked and punctated with brown. Tn the examples from 

 tlie ' Porcupine' brownish pigment still remained anteriorly 

 at the cephalic folds and between the ventral shields. The 

 bristles issue from an elevation at the dorsal ed^e of the 

 ridge for the hooks, and they t\)rm a vertical series in each 

 tut't. Moreover, six small papillaa (third to ninth) occur im- 

 mediately beneath them, and situated at the posterior border 

 of the ridge for the hooks. 



The hooks ditier from those of ^l. cirruta in the shorter 

 and less oblique base, which thus forms a different angle 

 M itli the crown. Four teetli occur above the main fang, as 

 in A. cirruta. The elevations or ])ads for the hooks are long 

 in front, stretching from the dorsal bristle-tufts almost to 

 the ventral groove. J^ehind the bristled region they form 

 small but prominent lamella.' along each lateral region, and 

 there is liitle difference in structure between the anterior 

 and posterior hooks. The former are in a double row, the 

 latter form a single series. 



This difl'ers from A. c'lrrata in the position of the j^apilhe 

 at the anterior setigerons processes, and in the absence ot 

 the adjoining Hap at the dorsal end of the rows of hooks. 

 Lajifiania bocck'i, var. fnjs/ricis, was dredged in the Kxpc- 



