42 Mull. 
MOLLUSCA. 
Rossia oweni (Ball), a specimen found at Llandudno, North Wales ; 
E. A. Smith, Ann. N. H. (5) vi. p. 398. 
Russia hyatti and subleqis (Verrill) ; Verrill, Am. J. Sci. (3) xix. p.291, 
pi. XV. figs. 1-3, off Cape Cod, Cape Sable, Nova Scotia, and Halifax. 
Loligo pealii (Lesueur) is the common squid from Cape Hatteras to 
Cape Cod. As in all other squids, the length of the caudal fin, in pro- 
portion to that of the body, increases with age, even after maturity. L. 
punctata (De Kay) is the young of the same ; borealis^ var. n.. North side 
of Cape Ann, Mass., and L. pallida (Verrill, 1873), Long Island Sound, 
described. Verrill, Am. J. Sci. (3) xix. pp. 292 & 293. 
Rteroteuthis arabica (Ehrenb.) is a true Loligo, Loligo laticeps (Owen) 
= Craiichia perlucula (Rang) = Onychia caribcea (Lesueur), Loligo 
eblance (Ball) is a true Ommastrephes. Steenstrup, 1. c. pp. 95-100. 
Calllteuthis, g. n., Verrill, Am. J. Sci. (3)xx. p. 491, Outer banks of the 
Southern coast of New Enuland. 
Sepioteuthis mauritiana (Riipp.), radula ; Brock, Morph. JB. vi. pi. xii. 
fig. 10 d. 
Sepiella (Cray, Steenstrup). Shell without apical spine ; mantle sup- 
ported by a prominent conical tubercle inserted into a deep excavation of 
the siphuncle ; a large, distinctly pleated, subcutaneous sac on the back 
above the shell, with small openings on the ventral side near the root of 
the fins. Sexual differences the same as in Sepia, but more conspicuous, the 
shell of the female much broader than that of the male. S. inermis 
(Hasselt), Indian Sea, its female = microchirus (Gray) and S. ornata 
(Roux), Western Africa. Steenstrup, Vid. Medd. 1879-80, pp. 347-356, 
with 8 woodcuts. 
Spirula australis. Male described by R. Owen ; the arms of the fourth 
pair are very unequal in size, club-shaped, and without suckers. P. Z. S. 
1880, pp. 352-354, pi. xxxii. ; abstract in Arch. Z. exper. viii. p. Ixii. 
TETRABRANGEIATA. 
Ammonitid^. 
W. Bkanco examines the fii-st whorls, probably embryonal shells, of 
various Ammonites, and distinguishes, with regard to the shape of the 
first septum, three groups : — (1) A. only found in Goniatites from 
Silurian and Devonian ; (2) Angustisellati, in all Ammonites of the 
Jurassic and chalk periods, but also in some from the Trias; (3) Lati- 
sellati, typical for the Goniatites of the Carboniferous periods, but also 
for some Devonian, and probably also in the Permian Ammonites. The 
first whorl of the Nautilidee is very different, as also is that of Spirula. 
Z. geol. Ges. 1880, pp. 596-611. [The Recorder mentions this palaeonto- 
logical paper because it is of general zoological importance.] 
H. Douville describes a specimen of Ammonites pseudoanceps in which 
the earlike processes of the aperture are united from both sides, and 
leave only a single hole and two pairs of holes between them ; he points 
out the analogy of these holes with the place of the funnel, the eyes, and 
