CEPHALOPODA — GASTROPODA (PECTINIBRANCHIA). Moll. 39 
Nautilus. A. G. Bourne describes the differences between the males 
and femalos ; he suggests that the tentacular lobes are analogous to the 
arms of the Dibranchiata , and the tentacles probably to the suckers, 
and distinguishes eight of such lobes, viz., four internal, two superior, 
and two inferior. In the males, four tentacles of the left superior lobe 
become hectocotylised ; the corresponding four on the right side are also 
slightly modified in the same sense. P. Brit. Ass. 1883, and Nature, 
xxix. p. 580 ; abstract in J. R. Micr. Soc. (2) iii. p. 830. 
Mention may be made here of A. Hyatt’s paper on the genera of 
fossil Cephalopods, P. Bost. Soc. xxii. pp. 253-338, containing a large 
number of new generic names, such as “ Konincldoceras “ Sandbergeno- 
ceras” &c. 
HETEROPODA. 
The sucker on the fin is also in the genera Pterotrachea and Firoloides 
not confined to the male sex ; W. Fewkes, Am. Nat. xvii. p. 206. 
Sinusigera. A. Craven, who, in Ann. Mai. Belg. xii. 1877, declared this 
to be a full-grown shell, against the general opinion, now concedes that 
it represents the young state of some Pectinibranch, such as Purpura or 
Pisania ; Sinusigera perversa (Craven) is the young of a Triforis : Ann. 
N. H. (5) xi. pp. 141 & 142, woodcut, and P.-v. Soc. mal. Belg. xii. 
p. xxvi. 
GASTROPODA. 
F. W. Htjtton continues to describe and figure the radula of New 
Zealand Branchiate Gastropods; Tr. N. Z. Inst. xv. pp. 118-131, pis. 
xiii.-xvi. 59 species. 
PEGTINIBBANOHIA. 
Muricidjs. 
Murex. J. Poirier publishes a revision of this genus, chiefly from the 
material in the Paris Museum. He discusses its geographical distribu- 
tion, giving lists of the species found in the different seas, distinguishes 
9 subgenera, already named, and enumerates 294 species, with their 
synonymy ; of all those which exist in the Paris Museum, the localities 
are registered. The following are new or not before figured: — M. (Tri- 
bulus) carbonnieri (Jousseaume, 1881), p. 31, pi. iv. fig. 1, Red Sea ; M. 
( Chicoreus ) bourguignati, sp. n., p. 48, pi. v. fig. 2, Nossi-Be ; poirxeri 
(Jousseaume, 1881), p. 55, pi. iv. fig. 2, New Caledonia; r’ocliebruni , sp. n., 
p. 57, pi. v. fig. 4, Diego Suares; jousseaumi, sp. n., p. 58, pi. vi. fig. 1, 
New Caledonia; M. ( Phyllonotus ) hirsutus, sp. n., p. 83, pi. vi. fig. 2, 
locality unknown ; M. ( Ilomalocantlia ) lambert.i , sp. n., p. 86, pi. vi. fig. 3, 
New Caledonia; M. ( Muricidea ) caledonicus (Jousseaume, 1880), p. 110, 
pi. v. fig. 3, New Caledonia ; M. ( Ocinebra ) erinaceoides (Valenc., 1883), 
p. 115, pi. iv. fig. 3, Acapulco. M. australis (Quoy & Gaimard), from 
