REPORT OF COMMISSIONER OF FISH AND FISHERIES. [40] 
inner edge nearly straight; atthe baseis a rather large and wide, V-shaped 
notch, the tooth beyond it being broad-triangular and rather large; 
beyond the tooth the alz are white, soft, and cartilaginous. 
Measurements of jaws (in inches). 
Transverse Urameter OL DUCCHL IHASS .> coe once cee oc cae oa ao eee eee ae aienG 1. 50 
Vertical diameter of buccal mass 2 ce-. 2 - 2c. coc e a ~ ee es encecelsces eoe= eemeae aes 1.70 
Upper mandible: 
Tip to end of frontal lamina...... -.....---. .---2+ 2222-2 eens eens cee e eee en ee 1.25 
Tip to notch ...--- 22-20 eannee sone cee ene conn e poe noe eon ee eee cece ewes = enna 57 
Tip to lateral border of lamina....-.......--------- -----+ cee en eo + eens eee eee ee Me ie 
Lower mandible: 
Tip to border of mentum... . .. 2a. non nnn nn seco eee ne ce necis ceeens senseels secs 45 
Tip to lateral border of al@...... 102-22 --.--- cor cee one se ce eens ene enone ceees .70 
Tip to inner end_of ale.. -..- .-nnae n= men -- n+ oon mains nee iem ccs ncmmchinenme ace 1. 02 
Tip to bottom of notch.......----.------ ---- ---- eo en ee ene ene se an meen - comes .32 
Hight of tooth...... ---..---20- --- on cee eee 2 nnn rene eee cee eons ewe nes _ .06 
Notch to immer end Of ale. -- <> - 22 wens seme eee eee nee eee e eee ene eee eeennee . 80 
Mentunm to imnerend of ‘alie..525 Sco 60. 4). Li eee sere eee ereiaatoe PE See rae oe 1.20 
‘The portion of the esophagus preserved is 14.75 inches long and about 
15 of an inch broad, in its flattened condition. 
The radula (Plate V, figs. 5-7) is amber-colored, .18 of an inch broad. 
The tridentate median teeth have moderately long but not very acute 
points, of which the middle one is.a little the longest. The inner lateral 
teeth are bidentate, and somewhat broader and longer than the median 
ones; their outer denticle is well developed, but considerably shorter 
than the inner one. The next to the outer lateral teeth are larger at base 
and much longer, simple, broad, tapering, flattened, slightly curved, 
acute at tip. They appear not to have the small lateral denticle observed 
on the corresponding teeth of the adult Architeuthis (see Plate V, figs. 
1, 2). The outer lateral teeth are similar to the preceding, but rather 
longer and not quite so broad at base. The marginal plates are well- 
developed, thin, somewhat rhomboidal. 
The internal cavity of the ears is somewhat irregularly three-lobed, 
with several rounded papille projecting inward from its sides, very much 
as in those of Ommastrephes. Each ear contained two irregular-shaped 
otoliths, one of which (Plate V, fig. 8) was much larger than the other, 
in each ear. ; 
The eyes were both burst, and most of their internal structure was de- 
stroyed. So far as preserved they closely agree with those of Omma- 
strephes. The eyeballs were large and somewhat oblong in form, and 
appear to have been nearly 2 inches broad and 3 long. The eyelids 
are badly mutilated, but the anterior sinus can be imperfectly made 
out. It seems to have been broad and rounded. The aquiferous cavities 
appear to have been like those of Ommastrephes. The form and. struc- 
ture of the cartilaginous ‘brain-box’ also appear to be essentially the 
same as in the genus last named. 
