1907.] 



FROM ZANZIBAR AND EAST AFRICA, 



457 



along the ovxter aspect almost to the tip ; the protective mem- 

 branes on either side of the sncker-bearing face resemble those of 

 the first pair. The third is the longest and stoutest, is keeled 

 along its whole length and has protective membranes like those 

 of the first. The fourth has two deep keels, one arising from the 

 interbrachial membrane, the other from the inner ventral angle 

 of the arm ; the protective membranes are both very narrow. 

 The suckers are in two rows throvighout, hemispherical and 

 obliquely set in their stalks; the horny ring (text-fig. 133) has 

 about ten bluntly-pointed teeth on the distal semicircuniference and 

 about sixteen small blunt ones on the proximal. The tip of the 

 left ventral arm is hectocotylised ; the suckers in about its distal 

 fifth become rapidly smaller and their peduncles proportionately 

 larger, until the extreme tip of the arm is occupied by a double 

 row of small conical processes. 



Text-fi^. 134. 



Text-fig. 135. 



Text-fig. 134. — Horny ring- of a large tentacular sucker of 



SepioteutJiis loUginiformis ; X 20. 

 Text-fig. 135. — Hornj' ring of a lateral tentacular sucker of 



SepioteutJiis Joliginiforniis ; X 20. 



The Tentacles are a little shorter than the mantle ; the stem is 

 elliptical in section ; the club is expanded and prismatic ; there is , 

 a distinct keel deepening into a membrane distally on the outer 

 aspect ; each side of the sucker-bearing face has a jDrotective 

 membi'ane, that on the ventral side being the wider. The suclcers 

 are in four series, those in the middle third being much enlarged ; 

 these have about twenty rather blunt teeth around the circum- 

 ference of the horny ring (text-fig. 134) ; in the lateral suckers the 

 horny ring has about ten acute teeth in its distal half and the 

 same number of small blunt ones in the proximal (text-fig. 135). 



The Colour (in alcohol) is dark purplish above, shading into 

 dull yellow below. 



