si-:. \r.\i, o KUANS. 



be Startled by the sudden appea ranee of masses ol' danc color ill 

 the water, and in the confusion the cuttle makes his escape __ 

 \V. I!. Hi-dins, in Nature, ix. :jr,:-i. 1*74. 

 Dorsal aquiferous pores MIT found opening upon the head in 



A rironaiita and Treiiioclopus : they communicate with large 

 internal cavitu s. In ( ) in mast replies and Tremor to pus anal pores, 

 with small cavities, are found on each side of the siphon ; in 

 Onychoteuthis they are placed in advance of it ; in other u'enera 

 they are want inn. The buccal region in I list intent his and Orn- 

 masfrephes has four aquiferous pores, and there are six of them 

 in Onychoteuthis, in Sepia and in Lolio'o: the oilier iiviiera want 

 them. Finally, there are brachial pores situated near the bases 

 of the tentacular arms and between the third and fourth pairs of 

 sessile arms: in Sepia. Sepiola and Kossia they communicate 

 with the "Tent cavities in which are lodged tin 4 tentacles when 

 contracted ; in Loligo the smaller cavity only sutliees to lod^v a 

 portion of the tentacnla. and in Hist ioteuthis. < hnmast replies 

 and Onychoteuthis the cavity is still more restricted, and only 

 occupies a part of the head anterior to the eyes: wanting in 

 other u'cnera. These pores are probably lubricative in function. 



(Injun*. 



The se\e> are distinct in the ce|)h:ilopo(l:i and in some of the 

 genera at least, the female individual is the largest and readily 

 distinguishable externally. The reproductive organs ;l i'e lamellar 

 or branched; their cellular contents are met amorpiiosed into ova 

 or spermato/oa, which are attached to the wall of a chamber 

 Communicating with the pallial cavity by one or two ducts, which, 

 in the female present glandular enhirviuents. 1'pon the walls 

 of the branchial cavity of the female two nidimental o'lands are 

 di'Veloped ; besides, sometimes accessory glands, within which is 

 secreted a viscid lluid which envelops the ova and airLiTeiiates 

 them into various forms, dilferiuo- accordiiiLi to the ^eni;-. 



In the male the cases or spermatophores containing the sper- 

 matoxoa are furnished by a prostatic u'land. 'Phesc' spermato- 

 phores. in the dibraiichiata are ovate, cylindrical and narrow, 

 consisting of a thin case, ending sometimes in a filament at one 

 end: at the other or thicker end is contained a sack full of 

 Spermatozoa, to Which is attached an elastic spiral cord, coiled 



