EXPLORATION OF ALASKA. yASY 
3. P. plebeia, Lovén. Index Moll., 1846, p. 6.' M. Atlanticum. 
4, P. doriformis (Quatref.). Phanérobranche doriforme. Moquin-Tandon 
(pseud. A. Frédol) Le monde de la mer., 1864, Pl. XII, fig. 1. M. 
Mediterraneum. 
5. P. canteriata (Quatref.) Phanérobranche a chevrons. Moquin-Tandon 
(do) l. c., pl. XII, f. 2. M. Mediterraneum. 
If. PALIO, Gray. 
Margo limbi frontalis tuberculatus. Folia branchialia bi- vel tri- 
pinnata ; appendices dorsales (branchiales) minores, complures. 
Lamelle mandibulares simplices (sine processu superiori). 
. P. Lessonit (V’Orb.). Pol. ocellata, A. et H. M. Atlanticum. 
. P. pudica, Lovén. Ind. Moll., 1846, p. 6. M. Atlanticum. 
. P. pallida. Beh.. n. sp. M. Pacificum. 
. P. dubia, Sars. Bidr. til Sdedyrenés. Naturh., 1829, p. 138. Tab. 2, 
fig. 5, 6. Lovén, Ind. Moll., 1846, p. 6. M. Atlanticum sept. 
10. P. ? Cookii, Angas. Journ. de Conchyl., 38., IV, 1, 1864, p.58; Pl. V, 
f.6. M. Pacificum. 
11. P. ? Capensis, Quoy et Gaim. Voy. de l’Uranie. Zool., 1824, p. 417; 
Pl. 66. f. 4. M. Capense.? 
Oo Os 
P. pallida, Bgh., n. sp. Plate XV, fig. 14; Plate XVI, fig. 1-9. 
Color flavescens. Branchia sexfoliata. 
Lamellz mandibulares fere ut in Pol. Lessonz7, sed magis elongate. 
Armatura lingualis fere ut in Pol. Lessonii; dentes externi 5. 
Hab. Oc. Pacificum septentr. 
Of this form Dall dredged a single individual in June, 1873, at 
Kyska Harbor (Aleutians, at the depth of ten fathoms on rocky 
bottom. According to Dall, the color of the living animal was “ yel- 
lowish-white.” 
The length of the animal preserved in spirits was 7.0 mm., with a 
height of 4.0 and a breadth of 3.0 mm.; the height of the branchial 
leaves abeut 1.0 mm., also that of the rhinophoria; the breadth of the 
1 « Viridifusea, sulphureo maculata, papillis frontis 10, branchiali 
utrinque una postica majore ; 11 mm. Bohus,’’ Lovén. 
This, as well as the other new Polycere of Lovén, has not since been 
seen (Cf. G. O. Sars, Moll. reg. arct. Norv., 1878, p. 313). 
2 Of the three (not too naturally represented) ‘* Polycere ’’ of A. Frédol 
(Moquin-Tandon), the one (l.c. Pl. XII, fig. 6) seems to be the Pol. 
Lessonti, the other two (fig. 8, 4) belong undoubtedly to the genus 
Thecacera. 
