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’s RIJKS MUSEUM VAN NATUURLIJKE HISTORIE — LEIDEN. 261 
V. — ON A NEW APHRODITE-SPECIES (A PHROD. ROULET) 
FROM THE NORTH ATLANTIC. 
BY Dr. R. HORST. — (WITH 3 TEXTFIGURES). 
Among the Annelids of the Leiden Museum I met with two specimens 
of the genus Aphrodite from the North Atlantic '), purchased some years 
ago from the late Mr. G. A. Frank, the well-known dealer in natural 
objects. They agree with Aphrod. perarmata Roule ®), collected by the 
“Talisman” in the middle Atlantic (Los Pilones), in the presence of 
hooked ventral bristles, but cannot be identified with that species. 
The largest specimen has a length of about 60 mm., whereas it- greatest 
breadth is 30 mm.; the number of its segments amounts to 36. 
Fig. 4. Fig. 2. Fig. 3. 
The body has an elongated ellipsoidal shape, with a rather acuminate 
anal end, while anteriorly it is hardly narrowed. Its ventral side has the 
appearance of shagreen, being densely beset with small, globular papillae, 
and its dorsum is covered with a thick felt, coated with mud. Through 
this felt pierce the fascicles of large dorsal bristles, that are arranged in 
two longitudinal rows; they are bent towards the dorsal median line but 
1) This locality is not quite sure; as the Aphrodite-specimens however were accompanied 
by three individuals of Laetmonice filicornis, a common North Atlantic form; it might be pre- 
sumed, that the statement is right. 
2) Expéditions scientifiques du ,,Travailleur” et du „Talisman”, Annélides et Géphyriens, 
OOR pel APN fee Ply ME fie. ZO Pl VEE, fo 47. 
