Species mihi non satis notæ, aut dubiæ.
Anatifa Villosa. Brugière. Encyclop. Meth. Des. Vers., tom. i, 1789, p. 62, Pl. clxvi.
On ships: Mediterranean.
Anatifa hirsuta[69] Conrad. Journal of the Acad. of Nat. Sc., Philadelphia, vol. vii, 1837, p. 262.
On fuci, Fayal, Azores.
The specimens, to which these names have been given by the above two authors, are described as small, and the A. villosa was suspected by Brugière to be young. The A. hirsuta is said by Conrad to have the valves minutely striated, granulated, and covered by a strong hirsute epidermis; the scuta, compared with the other valves, are very large; the entire length of this specimen was a quarter of an inch. The A. villosa is described as having smooth valves, and apparently the peduncle alone is hirsute. Now, in young individuals of [Lepas australis], the peduncle is hairy, whilst in full-grown specimens it is quite smooth. Again, in some varieties of L. fascicularis, the thorax, prosoma, and cirri are hirsute, whereas they are generally quite smooth; hence I am inclined to suspect that A. villosa is the young, in a state of variation, of L. anatifera; and that A. hirsuta bears a similar relation to L. anserifera. In Lamarck’s ‘Animaux sans Vertèbres,’ Pollicipes villosus of Sowerby is quite incorrectly given as a synonym to the above A. villosa.
[69] The Anatifa hirsuta of Quoy and Gaimard is the [Ibla quadrivalvis] of this work.
Anatifa elongata. Quoy et Gaimard. Voyage de l’Astrolabe, Pl. xciii, fig. 6.
This, I think, is certainly a distinct and new species, but I am unable to decide whether to place it in Lepas or Pæcilasma. It is briefly described and pretty well figured in the above work. It was procured at New Zealand, but it is not stated to what object it was attached. The capitulum is much elongated, and one inch in length; the peduncle is from six to eight lines long. The carina is said to be very narrow; it is not stated whether it terminates downwards in a fork or disc; judging from the figure, it extends some way up between the terga, the basal ends of which are bluntly pointed. The scuta are almost quadrilateral. The peduncle is short, yellow, and tuberculated. The general appearance of the drawing makes me suspect that it is a Pæcilasma.