ÖFVERSIGT AF K. VETENSK.-AKAD. FÖRHANDLINGAR 1896, N:0 10. 705 



and difFereritly shaped fin etc. O. caroli is sometinies found with 

 a similar connective apparatus, but it has a different brachial 

 formula, its third pair of arms largely webbed, the dorsal margin 

 of its niantle at an obtuse angle, smaller fins etc. The other 

 species of Ommatostreplies differ from tliis variety, as tlieir 

 connective apparatuses, brachial formulas, folds and pockets in 

 the siphonal fossa etc. are different, as may be seen from the 

 foUowing table. 



Ommatostreplies bartramii (Lesueur) d'Orb. 



brachial formula 3, 2, 4, 1 



connective apparatus 3 — 4 



plicse of the infundibuiar fossa 6 — 6 (7) — 6 



anterior mantle margin straight dorsally. 



O. gigas d'Orb. 



connective apparatus 6 — 6 



O. pteropus Stp. 



brachial formula 3 ^ 4, 2, 1 



web of third pair very large with rounded margin. 



connective apparatus 3 — 3 



p]ic?e of the infundibuiar fossa 3 — 6 — 3 



anterior mantle margin forms an obtuse angle dorsally. 



O. caroli FuRTADO. 



brachial formula 2, 3, 4, 1 



web of third pair very large, triangulär in shape. 



connective apparatus 3 — 4 or 4 — 4 



plicae of the infundibuiar fossa 2 — 1 — 7 — 1 — 2 



anterior mantle margin forms an obtuse angle dorsally. 



O. oualaniensis (Lesson) d'Orb. 



brachial formula 3, 2, 4, 1 



(according to d'Orbiquy's fig. 1 & 2, Pl. 3) 

 connective apparatus 3—4 



O. pelagicus (Bosc.) d'Orb. 



connective apparatus . . . . 2 — 2 or 2 — 1 



