996 prof, d'arcy w. thompsox ox [Dec. 18, 



about 4-5 inches indistinctly paired ones including about 02 small 

 suckers. On the dorso-lateral arm are about 20 pairs of large 

 suckers, beyond which the size of the suckers suddenly diminishes 

 for the last 4 inches, in which there are about 00 suckers, the last 

 few being exceedingly minute. The diminution in size of the 

 suckers is more abrupt in this case than in the other arms. In the 

 dorsal arm there are about 38 pairs of suckers, followed by about 

 50 less regularly arranged in the last 4 inches. 



Of the left tentacle only about seven inches is preserved. At 

 its broadest part it is about two and a half inches broad and much 

 flattened. It does not seem to have been recently broken off, but 

 is healed over at its extremity. Of the other tentacle about 

 twenty-three inches is preserved in connection with the body. It 

 is a broad, flattened strap, about an inch and a half in breadth. 

 The distal end of the tentacle, including the tentacular club (which 

 has hitherto remained unknown) is, very fortunately, preserved ; it 

 has all the appearance of having been directly continuous with 

 the attached portion, and measures nearly 24 inches in length, 

 the terminal club occupying the last eight inches. The club is 

 laterally compressed, and has on each side a web or frill, just like 

 that which runs parallel to the rows of suckers in the arms : this 

 frill is only about a quarter of an inch broad on the inner side, on 

 which side it may be traced as far as the tip ; on the external side 

 ifc is fully twice as broad, and stops some three inches short of the 

 tip. 



The arrangement of the connective organ is as follows : — The 

 first inch and a half or inch and a quarter of the club is occupied by a 

 group of intermixed suckers and pads, in which we can discern an 

 arrangement of six oblique rows containing 3, 4, 4, 4, 3, 3 elements 

 respectively : of these the first or external one has two pads and 

 a sucker between, the last has two suckers and a pad between ; the 

 rest consist alternately of suckers and pads exclusively. On the 

 left tentacle, the order of pads and suckers doubtless alternates with 

 this. Beyond this first portion of the connective organ commences 

 a double row of hooks, of which there are about eighteen pairs. 

 In our specimen many of these are missing. Of those that are 

 left the largest belongs to the ninth pair, and beyond it they 

 become much smaller. The lowermost hooks are about three- 

 eighths of an inch long and nearly of equal breadth in their 

 flattened bases. The largest, towards the middle of the club, are 

 about five-eighths of an inch long, and with bases about five- 

 sixteenths of an inch broad. The extreme tip of the club bears 

 a group of thirteen small suckers within a square of about a 

 quarter of an inch. Thus the connective organ is precisely that 

 of Onychoteuihis, or of Gray's allied genus, or subgenus thereof, 

 Ancistroteuthi*. 



Of the pen, the horny blade is lost in this specimen, and only 

 the great cone which terminates it posteriorly is preserved. This 

 remarkable object, the nearest approach to a modern belemnite, 

 forms a straight cone 15k inches long and 1| inches in diameter 



