ORDER DORSIBRANCHIA. 
25 
Cirrhatulus, Lam., 
Have a very long filament, serving as gills, and two small 
bundles of bristles to each of the articulations of the body, 
which are very numerous and very crowded ; there is, more- 
over, a line of long filaments around the nape. Its head, but 
little marked, has neither tentacula nor jaws, Lumbricus 
cirrhatus , Ott., Fabr., Faun., Grcenl. f. 5., from which the 
Terebella tentaculata , Mont., Linn., Trans. IX. vi. and the 
cirrhindre Jiligere , Blainv. pi. Diet, des Soc. Nat., do not 
appear to me to differ in genus ; Cirrh . LamarckiL , Aud. and 
Edw. Littoral, de la France, Annelid., pi. vii. f. 1 — 4. 
Palmyra, Sav ., 
Are recognised by their upper fasciculi, the bristles of which 
are large, flatted, disposed like a fan, and shine like the most 
finely polished gold. Their inferior fasciculi are small ; their 
cirrhi and gills but little marked. They have the body elon- 
gated, two tentacula tolerably long, and three very small. 
But one is known, from the Isle of France, one or two 
inches long, Palmyra aurifera , Sav. 
Aphrodita, Lin., 
Are easily recognized in this order by the two longitudinal 
ranges of broad membranous scales which cover their back, to 
which, through a very groundless assimilation, the name of 
elytra has been given, and under which their gills are con- 
cealed, in the form of small fleshy crests. 
Their body is generally of a flatted form, and shorter and 
broader than in the other Annelida. We observe in their in- 
terior a very thick and muscular oesophagus, capable of being- 
protruded externally like a proboscis. The intestine is un- 
equal, and furnished on each side with a great number of 
