1869. | DR. J. D. MACDONALD ON A NEW CIRRIPED. 443 
to settle this point. It would appear, however, as though at least 
distinct species of Cirripeds infested distinct species of Pinnipeds. 
Oral organs of a Feejeean Pedunculated Cirriped. 
a, palp; 4, mandible; c, maxilla; d, external ditto; ¢, anterior branch of first 
pair of cirri. (See p. 442.) 
Of all the pedunculated cirripeds, Dichelaspis lowei appears to 
make the nearest approach to Parodolepas neptuni, both in size and 
the disposition of the shelly parts of the capitulum. It is, however, 
somewhat larger*, and there is no evidence that the approximation 
of its valves has been overlooked ; added to which its mandibles are 
only furnished with four teeth, while the maxille are thickly beset 
with spines, the three upper being divided from the rest by a notch ; 
in which latter particulars it would agree better with the Feejeean 
species. 
Parodolepas is of great interest, as showing that the unequivocal 
presence of “five valves approximate,”’ as in Lepas and Pecilasma, 
coexists with the still more obvious development of what might be 
denominated the centres of shell-growth of the last-mentioned genera, 
and which, as it were, constitute the only representatives of true 
* Length of capitulum -2, of an inch as compared with -% of an inch. 
