445 



5. Class. Ceplialopoda Cuv. 



Ordo. Dibranehiata OWEN, 



1. Subordo. Decapoda Leach. 



I. Oivisio. Oegopsida d'Orb. 



1. Fam. OMMASTREPHIDAE v^^tstp. Corpns elongatum, cylindricura, postice 

 acuminatum aut rotundatum, pinnis munitum; claustrum nuchale et infundibulare 

 cartilagineum; radula complicata; bracliia cupulis margine denticulato instructa^ 

 sine uncis; gladius pliragmocono munitus; g^landulae nidamentales. 



1. Subfam. Thysanoteuthinae Kfstx. Corpus elongatum, cylindricum; 

 bracliia libera, cupulis alternis et cirris instructa; infundibulum musculis duobus 

 capiti aftixum; claustrum infundibulare utrinque cartilaginem subglobularem in 

 infundibulo et foveam cartilagineam in pallio referens; gladius lanceolatus, ante 

 profunde excisus, sagittiforrais. 



Thysanoteuthis Teoschel. Pinnae rhoniboidales ant rofundafae, longifudincm 

 palUi fotatn auf magnam partem ejus occupantes; hrachia cupidis hiseriatis, cirris a 

 pcduncidis ctqmlarum orientihus ct limho membranaceo instructa; tentacula cnpuJis 

 distantibus parvis et clara pandnm discreta munita. 



m 1. Th. rhombus Teosch. Corpus cylindricum, ante truncatum, post 

 paullo attenuatura et rotundatura; pinnae longitudinem pallii aequantes, conjunctae 

 rliorabura, lateribus anterioribus brevioribus formantes; bracliia pro longit. 3., 2., 

 1., 4., cirris membrana, in brachiis sex superioribus bene forraata, in pari 4 

 fere deficiente conjunctis; clavae tentaculorum vix crassiores, seriebus quatuor 

 cupiihirum, mediis majoribus instructae. — Long. corp. et capit. 115, corp. 92^ 

 brach. 34, 53, 100, 35, tentac. 104, gladii 102 rara (Troschel, gerraan.). 



Habit.: Napoli (Yigelius); Messina (Teoschel). 



m 2. Th. elegans Teosch. {? SepiotentJiis sictda [Rtvp.^Yr.n. sec. Hoyle). 

 Corpus cylindricura, breve, crassura, post rotundatura, pinnis quartani parteni an- 

 teriorem pallii non cingentibus, conjunctis ovatis, rotundatis; bracliia pro longit. 3., 

 2., 1., 4.; tentacula basin versus cupulis magis numerosis, alternantibus in clava 

 cupulis quadriseriatis, mediis vix raajoribus. — Long-. corp. et cap. 19, corp. 15» 

 brach. 8, 10, 13, 7, tentac. 13 mm (Teoschel, german.). 



Habit.: Messina (Troschel). 



Cleneri huic adscribenda est: 



3. [Th.] Sepioteuthis sicula (Rupp.) V^r. „Corpore ovali oWongo, postice 

 riitundato, antice truncato, sui»er subacuto, subtus leviter concavo: alis late- 

 ralibus in niedio corjioris latioribus: corpore cum alis levitcr ovato; lamina dor- 

 salis cartilag-iuea.'" ,.Bracbia pro longit. 4., 3., 2., 1t, dimidio corpore breviora. 

 cupulae mininia, tentacula corpori aeque longa." — Messina (Ruppkll, Krohn). — 

 Au species distincta? 



2. Subfam. Ommastrephinae Ststp. Brachia et tentacula cupulis mar- 

 gine dentato, sine cirris; claustrum infundibulare utrinque foveam cartilagineam 

 formae X in infundibulo, cristam cartilagineam in pallio exhibens; pinnae plus. 

 miuusve rhomboideae, termiuales; bracliium dextrum aut sinistrum paris 4. j^artem 

 copulatoriam formans; infimdibulum funiculis 4 capiti aftixum, in fovea profunda 

 capitis; bin-sae aquiferae 4 circum oculos, nulhi ad basin bracliiorum lateralium; 

 gladius lanceolatus aut sagittatus, cupula terminali. 



