821 



CEPHALOPODA. 



CEPHALOPODA. 



synopsis from Forbes and Hanley's 'British Mollusca," will give 

 an idea : 



Family, OCTOPODED^. 



Genus, Octopus. [OCTOPUS.] 



0. vulgari*. 

 Genus, Eledone. [ELEDQSE.] 



E. cirrhoeus. 

 Family, TEUTHID^. 



Genus, Sepiola. [SEPIOLA.] 



S. Ataluntica. 



S. Rondele/ii. 

 Genus, Roiaia. [RossiA.] 



R. macrosoma. 



R. Owenii. 

 Genus, Loliijo. [LOLIGO.] 



L. vulguris. 



L. media. 



L. marntora. x 

 Genus, Ommastrephes. [OMMASTHEPIIES.] 



0. tayittatus. 



0. todai'us. 



0. blan<r. 

 Family, SEFIAD.S. 



Genus, Sepia. [SEPIA.] 



& officinalii. 



S. biitrialis. 

 Genus, Spiritia. [SpiRULA.] 



S. Peronii. 



Foitil Cephalopoda. 



These are multitudinous, and in the bye-gone ages of the world 

 appear to have been powerful instruments for keeping down the 

 other tribes of ancient Testaceans, Crustaceans, and even Fishes ; for 

 many of them certain Orthocerata and Ammonilet for example 

 afford evidence of gigantic dimensions. In the periods prior to the 

 Chalk Formation, and at the time of its deposit, they were the 

 agents employed for this purpose, and were succeeded in the Tertiary 

 period by the Fossil Trachelipods, which are either entirely absent 

 or very scarce in the Secondary and Transition series, while the Fossil 

 Cephalopods occur but rarely in the Tertiary beds. The extinct 

 Ammonite [AMMONITES], Baculite, Belemnite, Hamite, Orthoceratite, 

 Turrilite, and Scaphite, will readily occur to the fossil zoologist as 

 some of the ancient class. The Foraminifera, formerly placed by 

 D'Orbigny in this class, are now no longer regarded even as Molliuca. 



[FORAMINIFEBA.] 



The following is M. D'Orbigny's division and arrangement of the 

 class Cephalopoda, including both recent and fossil genera : 



Order A. ACETABCLIFERA, Fer. 

 OCTOPODA. Genus, 



DECAFODA. 



Fam. SEPIAD^E, 



Cuttle-Fishcs. 



[SKFIAD.E.] 



Fam. 



Fam. TEUTIHD/E, 

 Calamariee. 

 [TEUTBID*.] 



Fam. BELF.MNITID.E. 

 [BELEMNITEK.] 



lUJITID.E. I 



ITES.] 1 



Fam. Si-mi 

 [Sl'lKULA.] 



and D'Orb. ; DIBRANCHIATA, Owen. 

 Octopus, Lam. ; Ex., 0. rulgaria (fig. 



2506, 2507) ; 0. vcntricomi (2509). 

 Eledone. 



Pfiilonnii, D'Orb. 

 Argonauta, Linn.; Ex., A. Argo (2530, 



2532). 



Crunch, Leach ; Ex., C. icabra (2515). 

 >'(;))/,/, Lam. ; Ex., S. rulgarit (fig. 



2510) ; 5. ttenodactyla, (2511, 2512). 

 Rosria, Owen ; Ex., R. palpebrota (2513). 

 Sepia, Linn.; Ex., S. officinalis (2519, 



2520). 



Loligo, Lam. ; Ex., L. vulgarii (2518). 

 Sepioteulhii, Blain., R. and F. 

 Teudopsu, Deslongchainps. FOBS. 

 Lolujoptit, Lam. 

 Jfittioteulltii, D'Orb. 

 Leptoteuthit, Meyer. 

 Beloteuthii, Miinster. 

 Bdemnosrpia, Agassiz. 

 Onyh'jteuthii, LichteiiHtciu ; Ex., 0. 



Bankiii (2516). 

 Enoplotcuthii, D'Orb. 

 Acanthoteuthi*, Wagner. 

 Kalcena, Miinster. 

 Ommastrephet, D'Orb. 

 C'enoteuthii, D'Orb. 

 StlemnUella, D'Orb. 

 Belemnittt, i. Acuari. Oolitic. 



ii. Canalicidati. Oolitic, 

 iii. Ilaatati. Oolitic and 



Cretaceous, 

 iv. Clarati. LiiM. 

 v. Dilatati. Neocomieu. 

 >'/I/.-H/'/. Lam. 

 ^/ini/irostra, D'Orb. 

 Seloptera, Din. ; Ex.,7?. tepoidca (2584); 



B. bekmnoidea (2585). 



Order B. TENTACULIFEBA, D'Orb. ; TETBABRANCHIATA, Owen. 

 1st Fam. NAUTILID^B. [NAUTILID^:.] 



Genus, Nautilus; Ex., N. Pompilius (2521); 

 N. gcrobiculatue (2522). 



Fossil species, a. Striati. 



b. Radiati. 



c. Lntvigali. 



Lituites, Breyn, F. ; Ex., L. articulatua 



(2581). 



Utirtolva, Montfort, F. 

 Nauliloceroi, D'Orb., F. 

 Aploceras, D'Orb., F. 

 Gomphocerag, Lew., F. 

 Gonioceras, Hall, F. 

 Orthocerattiei, Brcyn, T. ; Ex., 0. 



laterale. 



Actinoceras, Brom. 

 Andoceras, Hall. 



2nd Fam. CLYMENID-E. 



* Partitions without lateral or dorsal lobes. 



Genus, Melia, Fischer. 



Camerocerae, Conrad. 



Campulites, Desh. ; Ex., C. nnlricoftw 



(2582, 2583) ; Phraymoceras, Sow. 

 ., Trochilites, Conrad. 



** Partitions with one lateral lobe but no dorsal lobe. 

 Genus, Clymmia, Miinster. 

 Meyasiphwia, D'Orb. 



3rd Fain. AMMONITIM:. [AMMONITES.] 



* Without a dorsal lobe. 



Genus, Oncoceras, Hall. 



Cyrtoceraj; Goldfuss ; Ex., C. deprcs- 



um (2580). 

 Gyrocerai, Meyer. 

 Cryptoceras, D'Orb. 

 ** One dorsal lobe. 



Genus, Slenocerat. 

 *** Partitions angular, not branched ; lateral lobes, 



and one-angular dorsal lobe. 

 Genus, Goniatitcs [GONIATITES] ; Ex., G. /run- 

 catut, G, Liiteri, G. spirorbii, G. 

 Gibsoni. 



L Lingual i. 

 ii. Lanceolati ; Ex., G. Henslowi 



(2558). 

 iii Genufracti ; Ex. G. ttriaivi 



(2563). 

 iv. Serrati. 

 v. Crenati. 

 vi. Acutolaterctlfs. 

 vii. Magnosillarcs; Ex., G. iMcevii 



(2557). 

 viii. Nautilini; Ex., G. ejpanmt 



(2556). 

 Ceratitet, De Haan; Ex., C. nodosut 



(2547). 

 **** Partitions branched, one dorsal lobe. 



Genus, Ammonite*, Brug. [AMMONITES.] 

 i. Oolitic Groups. 



Arieta. Lower Lias; Ex., A. 



obtusus (2538). 

 FtUciferi. Upper Lias. 

 A malthei. 



Ornati. Oxford Clay. 

 Capricorni. 

 Coronari. Inf.-Oolite. 

 Arnuiti. Upper Oolites. 

 ii. Oolitic and Cretaceous Groups. 

 IfelerophyUi. D'Orb. 

 Macrocephali. 

 Fimbriati. D'Orb. 

 Planulali. 



iii. Cretaceous Groups. 

 Crittati. 

 Tuberculati. 

 Clypeiforincs. 

 Pulchelli. 



Rothomagtnscs (2548). 

 Dentati. 

 Flexuosi. 

 Compressi. 

 Anguli cottati. 

 Ligati. 



ftcaphitet, Parkinson. 

 Criocerat, Ldveillc ; Ex., C. Dewallii 

 (2550). 



