130 Prof. M‘Intosh’s Notes from the 
In the ‘Supplement to the Annelids of Naples’ (1870) 
Claparéde * repeats the generic characters he had previously 
given, only adding that spatulate or pectinate bristles are 
absent from the posterior region. He also differentiates 
Psygmobranchus more definitely from Salmacina by the 
entire absence of buds in the former, and by the herma- 
phrodite condition in Salmacina, which is to all intents and 
purposes, he says, a Filograna deprived of its operculum. 
In this publication he describes a new species, A. edifi- 
catriv t+, characterized by the whitish granular tubercles 
along the exterior of the filaments, the absence of eyes, and 
the presence of nine thoracic segments, the other features 
being common to it and the other species. He states that 
this form is very near S. incrustans, which is found adhering 
throughout its length to the surface of Fuci and other 
marine plants, to the surface of shells, and other bodies, 
whereas S. wdificatrix is a deep-water form which constructs 
masses, by the branching and anastomosing of its tubes, 
identical in structure with those of Salmacina dysteri (from 
which the Neapolitan form is readily discriminated by the 
absence of enlargements at the extremity of the branchiz), 
and so with Filograna. He thinks the structure of S. edifi- 
catriz leaves little doubt as to its reproducing by posterior 
buds. 
In his figure of the collar-bristles he is more accurate than 
Langerhans, the number of serrations on the flattened basal 
region being seven, and the hiatus is more in accordance 
with Nature ; yet the bristle, as a whole, does not differ in 
any way from that of Filograna. The other segments carry 
bristles which do not differ from those of S. incrustans, and, 
it may be added, from those of Filograna. He holds that 
the hooks differ from those of S. incrustans, but it cannot be 
said that his figure (pl. 13. fig. 1, E) represents a full lateral 
view of the organ, but rather a partial lateral view, thus © 
giving it greater length proportionally than it really has. 
These small organs are not readily mounted so as to exhibit 
a complete lateral view, and thus the able Swiss author 
was misled. They seem to agree with all the other forms 
examined. 
Amongst other features, the author states that the 
achetous region between the thorax and the first abdominal 
bristles is equal to four or five segments, and that the abdo- 
minal bristles are capillary and winged, with a “knee” at the 
* P. 154. 
fabs hos, pl.xin: figs 1. 
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