PEOF. OWEN ON NEW AND RARE CEPHALOPODA. 139 



Genus Sepiola. 

 Species Sepiol,v oweniana, d'Orb. 



I subjoin a description and figure of the male organs of Sepiola oweniana, d'Orb. 

 (PI. XXVI. fig. 2) for comparison with those of Sepiola rjrantiana, d'Orb.^ from which 

 the difference of the subject of fig. 2, PI. XXIV. is so great as to lead me to conclude 

 that the complexities of the organs had failed to be unravelled by the deservedly esteemed 

 French authorities on the present highly organized class of Mollusca. 



In Sepiola oiveniana the testis (ib. fig. 2, a) is pyriform, convex on one side, the 

 opposite surface converging to a low ridge, from which the sperm-duct (vas deferens, b) 

 is continued. This duct is relatively shorter and has fewer convolutions than in Sepio- 

 teuthis. The " vesicula seminalis," c, is relatively longer, more slender, and shows a short 

 fold in its forward course. The prostate, (7, is rounded, its secretion is carried into the 

 fore end of the " vesicula " by a relatively longer duct than in Sepioteuthis and Octopus. 

 The duct, e, proceeds from the confluence of those of the vesicula and prostate, 

 and, describing a turn round the hinder and smaller portion of the spermatophorous 

 pouch, opens into its fundus. This pouch, f, is relatively larger than in Sejjtioteuthis 

 or than in Octopus ^ ; it is oblong, partially divided into two compartments by the slight 

 constriction along which the vesiculo-prostatic canal curves. The spermatophorous duct, 

 short and wide, g, comes off near to the large anterior end of the pouch, and conveys 

 the movable " filaments of Needham " into the base of a conical penis, h. 



Fam. TEUTHID^, Owen^ 



Section a\ 



Subfam. LoLiGOPSiN.i:, d'Orb.' 



Genus Loligopsis, Lam.' 



Species Lougopsis ocellata, Ow. (Plate XXVI. figs. 3-8, & Plate XXVII.) 



This species, in the relative magnitude of the head and shortness of the trunk, departs 

 from the generic character derived by d'Orbigny from the few specimens of the singu- 

 larly modified Decapods forming Lamarck's genus " Loligopsis " at the date of publica- 

 tion of the great work quoted below'. Nevertheless the essential characters of the 



' Op. cit. p. 229. = Ibid. Sepiola, pi. ii. fig. 11. 



' See Cuvier, Memoires &e. des Mollusques, 4to, 1817, " Pouipe," pi. iv. fig. 5, e. 

 < Trans. Zool. Soc. vol. ii. p. 129. ' Ibidem (1836). 



' 0/). cit. p. 320 (1830-18-18). ' Extrait du Cours d'Hist. Nat., 1812. 



' " Genre Loligopsis, Lamarck. Animal pourvu d'une tete tres petite par rapport a I'ensemble, et d'un corjis 

 tres allonge.— "Op. cit. p. 320 : fol., 1839. 



VOL. XI. — PART T. No. 2. — June, 1881. 2 a 



