REPORT ON THE ANNELIDA. 
61 
time is wasted in sucli a case without an adequate result. The Lepidonotus dictyolepis 
of Haswell/ from Watson’s Bay, Port Jackson, appears to approach this genus [Ip>hione) 
so closely that it may be placed under it. 
So little has been said about the typical species of this genus [Iphione muricata, 
Savigny that it has been thought proper on the present occasion to point out several 
additional features so as to elucidate the relations of the foregoing form. Besides the 
characters of Iphione muricata (PI. IX. fig. 7) already given by Savigny, it may be 
mentioned that the outer border of the scales is furnished with peculiar spinous papillae. 
The latter are loosely attached to the edge of the scale, so that they are very mobile. 
The spines on the papillae were probably overlooked by Savigny, and they are frec[uently 
enveloped in muddy debris. Various ciliary grovdhs also occur both on the scale and 
the spinous processes. The cicatrix on the dorsum of the foot for the attachment of the 
scale is remarkably large and long, and, moreover, there is an accessory surface appended 
to its anterior edge, externally. The dorsal bristles form a dense tuft at the anterior 
superior border of the foot, and consist of a central axis supporting a series of spikes like 
those of certain grasses. The secondary processes or pinnae, which, unlike those of 
the Polynoidse proper, are opposite, at first are somewhat adherent, then gradually 
become more closely arranged and more produced laterally, and by and by terminate in 
a slender tip. The ventral bristles have a simple hook at the extremity, and beneath a 
close series of transverse spinous rows. 
Whether Kinberg’s Iphione spinosa is different from Iphione muricata, Savigny, or a 
variety is a doubtful point. The statement that the head resembles that of Iphione 
ovata would seem to favour the latter view. It would have saved ambiguity, however, 
if he had clearly said in what respects the head differed and in what respects it agreed 
with Savigny’s Iphione muricata. Grube,^ again, correctly notices the presence of a 
small cephalic tubercle in the middle line posteriorly. He also speaks of the ventral 
papilla (or mamilla) as commencing on the fourth segment, but this is of little conse- 
quence, since the elevation indicating its presence is even more anterior. He does not 
mention spines on the cilia of the scales, which the addition of glacial acetic acid brings 
out very boldly, though it does not produce evidence of the carbonate of lime he 
mentions in their tissue. Such calcareous matter was probably extraneous, and thus 
deceived my friend, for sponges and other growths are common on the scales, which are 
essentially chitinous. Schmarda’s Polynoe peronea^ from Ceylon appears to be very 
closely allied to the foregoing if it be not identical therewith. 
1 Free. Linn. Soc. N. S. Wales, vii. p. 287. ^ Syst. des Annel., p. 21 ; Annel. gravees, pi. iii. fig. 1. 
3 Anneliden Fauna d. Philippinen, p. 21. ^ Neue wirbell. Tliiere, I. ii. p. 157, Tab. xxsvi. figs. 315, 316, a. 
