REPORT OF COMMISSIONER OF FISH AND FISHERIES. [236] 
Figure 5.—The same. A somewhat older larva, taken swimming at the surface. 
Dorsal view; enlarged about 7 diameters. The dorsal arms are still very small; 
the tentacular arms are much the largest; the chromatophores are large and sym- 
metrically arranged, but only a part of them are shown in the figure ; the caudal 
fins do not reach the posterior end. 
Figure 6.—The same. Young female. Dorsal view of a specimen taken at Newport, 
R. I., in August. Enlarged 2 diameters. From a fresh specimen. 
Figure 7.—The same. One of the egg-capsules, slightly enlarged. 
Figure 8.—The same. <A very young embryo, earlier than figure 1; dorsal view; a, 
rudiments of the arms; 0, otoliths; s, inner folds of the siphon; g, rudiments of the 
gills; c, “eye-stalks,” or swellings of the sides of the head; m, mantle; p, shell- 
area; y, yolk. 
Figures 1 and 2 are from camera-drawings by the author; figure 8 is copied from 
Brooks; the rest are by J. H. Emerton. 
PLATE XXXI. 
Figure 1.—Loligo Pealei. Portion of middle of club, showing the four rows of suck- 
ers; enlarged 4 diameters. From an individual having larger suckers than usual. 
Figure 2.—The same. Portion of the middle of the tentacular club of a specimen 
from the same lot and of nearly the same size as figure 1, but having small tentacu- 
lar suckers; enlarged 4 diameters; a, a’, largest median suckers; }, 6’, lateral suck- 
ers. , 
Figure 3.—The same. Portion of the horny ring and marginal denticles of one of the 
large median suckers of the tentacular club; much enlarged. 
Figure 4.—Loligo brevis By. Female. Dorsal view; natural size. 
Figure 4a.—The same specimen. Pen; natural size. 
Figure 4b.—The same. Portion of horny ring and marginal scales of one of the large 
tentacular suckers; much enlarged. 
Figure 4c.—The same sucker; less enlarged; front view. From a mounted specimen 
which, by contracting, has everted the denticulated border of the rim. 
PLATE XXXII. 
Figure 1.—Chiroteuthis lacertosa Verrill. Oneof the tentacular arms, outer side; natu- 
ral size. 
Figure la.—The same. Front view of club; enlarged 2 diameters. 
Figure 1b.—The same. One of the suckers, front view; enlarged 10 diameters. 
Figure 2.—Loligo Pealei, var. borealis, Female, in the breeding season. Ventral view; 
about 4 natural size. The mantle has been cut open nearly in the median line and 
the peritoneal membrane partly removed. The lettering is the same as in figure 1 of 
Pl. XXIX, with the following additions: 1, 2, 3, 4, first, second, third, and fourth 
pairs of sessile arms: ¢ a, tentacular arms; d’, external orifice of siphon; o v, ov’, 
ovary, mostly concealed by the oviduct; vo, commencement of glandular portion of 
oviduct; «’, large gland surrounding the oviduct; od’, anterior portion of oviduct; 
op, orifice of oviduct; xx, pair of large, ventral, laminated, nidamental glands; 2, 
pair of folliculated and mottled, accessory nidamental glands; u, one of the ureth- 
ral openings of the peritoneal membrane. 
Figure 3.—The same. Section of gill; enlarged about 8 diameters; a, one of the 
lamelle with the efferent vessel along its edge; a’, its outer end; bo, the main 
efferent or branchio-cardiac vessel, returning the blood to the heart; bv, the main 
branchial vein, or efferent vessel; b, one of the branches supplying a lamella; », 
another vein in the muscular stem, c; d, membrane uniting the gill to the mantle; 
e, membrane running across the dorsal side of the gill. 
