444 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [234] 



Figure 4. — The same. Female; front view of the beak and buccal membranes; nat- 

 ural size ; m, mandibles ; /, inner fold ; e, second fold of the buccal membrane ; a, 

 ■dorsal ; b, c, lateral ; d, ventral angles of the outer buccal membrane, with their 

 small suckers ; s, peculiar horseshoe-shaped tubercle, for the attachment of the sper- 

 rnatophorcs duriug copulation. 



Plate XXVII. 



Figure 1. — Loligo Pealei, var. borcalis. Female specimen, from Annisquam, Mass. Pen; 

 natural size. Represented as flattened to show the full width of the thin portion. 



Figure 2. — Loligo Pealei Les. Female specimen, from Vineyard Sound. Pen ; natu- 

 ral size ; represented as before in the same manner. 



Figure 3. — The same. Pen of a young specimen from Vineyard Sound ; natural size. 

 Represented in the same way. 



Figure 4. — The same. Pen of a male ; f natural size. Viewed in the same manner 

 as figures 1 and 2. 



Figure 4a. — The same. Pen ; side view of tip ; enlarged. 



Figure 5. — Loligo Gala D'Orb. Pen; $ natural size. 



Plate XXVIII. 



Figure 1. — Loligo Pealei, var. pallida Verrill. Male, from Ausouia, N. Y. Dorsal 

 view ; about i natural size. 



Figure 2. — The same. Pen ; about £ natural size. 



Figure 3. — The same. Male. Suckers enlarged 3 diameters ; V ', front view of tenth, 

 from third arm ; b, side view of the same ; c, side view of the horny ring of the 

 fifth large sucker of the tentacular club ; c', front view of the same. 



Figure 4. — The same. Female. Suckers : a, lateral, and a', front view of tenth 

 sucker from the third pair of arms ; e, side, and e', front view of the fifth large 

 sucker of the tentacular arm ; enlarged 3 diameters. 



Figure 5. — The same. Upper mandible : a, rostrum or tip of the beak ; b, the notch ; 

 c, the inner end of ala; d, the frontal lamina; c, the palatine lamina; a b, the cut- 

 ting edge of beak ; b c, anterior or cutting edge of ala. 



Figure 5a. — The same. Lower mandible : a, rostrum ; a b, cutting edge ; b c, anterior 

 edge of ala ; d, mentum or chin ; e, gular lamina. 



Figure 6. — The same. Part of the teeth of the odontophore ; enlarged 50 diameters ; 

 a, median tooth, front view ; c, next to outer lateral teeth ; d, outer lateral teeth ; 

 e, marginal plates ; all are in their natural positions, except a. 



Figure 7. — The same. Portion of the radula ; enlarged 22 diameters. 



Figure 8. — Loligo Pealei. Portion of the radula ; enlarged about 20 diameters. 



Figures 9, 9a. — The same. Male ; side and front views of the horny ring of one of 

 the marginal suckers of the tentacular club ; enlarged 10 diameters. 



Figure 10. — Teeth on the lining membrane of the palate ; enlarged 25 diameters. 



Figure 11. — Chiroteuthis lacertosa. One of the tentacular suckers; front view; en- 

 larged 75 diameters. 



Figure 11a. — The same sucker, with pedicel; front view ; enlarged 22 diameters. 



Figures 5 and 5a were drawn by the author ; figure 9 was drawn by J. H. Blake, 

 from nature ; the rest, by J. H. Emerton. 



Plate XXIX. 



Figure 1. — Loligo Pealei, var. pallida. Male. Ventral view ; about £ natural size. 

 The mantle has been cut open, a little to one side of the median line ; most of the 

 peritoneal membrane has been removed. C, lower side of head ; M, mantle ; F, 

 caudal fin ; a, lachrymal pore ; a', muscles ; b, olfactory crests ; c, eye ; d, siphon, 

 cut open ; d", cavity of siphon ; e, valve of siphon ; /, one of the connective carti- 

 lages of the siphon ; /', one of the connective cartilages of the mantle, in the form 



