A. JE. Verritt — North American Cephalopods. 
441 
Plate XL. 
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; b , olfactory crests; c, eye; d, siphon, cut open ; 
d", cavity of siphon; e, valve of siphon; /, one of the connective cartilages of 
the siphon ; /', one of the connective cartilages of the mantle, in the form of a 
ridge, fitting into the siphonal cartilage ; g , gill ; h, termination of the intestine, 
or rectum; i, ink-sac; i', duct of ink-sac; l , portion of liver, in position; m', m'i 
muscular columns connecting the head and siphon with dorsal portion of the 
body; H, systemic heart, or ventricle, crossed by the artery of the ink-sac; 
ao, bulbous base of anterior aorta ; o, ventral pallial artery, or median branch of 
the posterior aorta, supplying the ventral parts of the mantle ; o', one of the 
caudal arteries or lateral branches of the posterior aorta going to the caudal fin 
and posterior parts of the mantle ; au, au, branchial auricles ; b v, afferent vessel 
going to the gills; bo, efferent branchial vessels, returning the blood to the ven- 
tricle, their swollen basal portions acting as auricles ; v c, anterior vena-cava ; r, r, 
ventral rena-l organs, two ventral sacculated branches of the vena-cava (on the 
left side, the vein from the ink-sac and rectum is shown); r',r', two pyriform 
renal organs, or sacculated and glandular portions of the posterior venae-cavas, 
directly connected with r, r; v, v c', lateral pallial veins, going to the dorsal sac- 
culated divisions of the venm-cavae ; v c", v c" two posterior venae-cavaj, returning 
from the caudal fin and mantle; S, first stomach, or gizzard; S', large, saccular 
coecal appendage of the stomach ; k, glandular, plicated division of the stomach ; t, 
spermary or testicle ; p r, prostate glaud, with the vesiculse-seminales and sperraa- 
tophore-sac; p, efferent sperm-duct or ‘penis’; P, posterior portion of the pen. 
Figure 2. — The same. Dorsal view of the reproductive organs, part of the renal 
organs, heart, etc., dissected out. The lettering is as in figure 1, with the follow- 
ing additions: id. vas-deferens, closely folded upon itself; s s, spermatophore- 
sac ; po, genital artery; go, spermatic artery and vein; S", commencement of 
intestine: p t, part of peritoneal membrane. 
Figure 3 . — Loligo Pealei. Female in the breeding season. Oviduct, filled with ova, 
dissected out. Ventral view, about 4 natural size; vo, commencement of convo- 
luted, thin membranous portion of oviduct ; o d, entrance to glandular portion ; 
o d', glandular portion of oviduct, surrounded by the large, laminated gland, x ', 
the arterial vessels of which have been injected ; op, orifice of the oviduct. 
Figure 3a. — The same specimen, seen from the dorsal side. 
Figures 4a, 46. — Loligo Pealei. Male. Side and front views of horny rim of one of 
the marginal suckers of the tentacular club, enlarged 10 diameters. 
Figure 5. — The same. Portion of the rim and marginal denticles of one of the large 
median suckers of the tentacular club, much enlarged. 
Figures 3, 3a are by the author ; the others by J. H. Emerton, from alcoholic speci- 
mens. 
Plate XLI. 
Figure 1 . — Loligo Pealei, var. borealis. Female, in the breeding season. Ventral 
view, about \ natural size. The mantle has been cut open nearly in the median 
line and the peritoneal membrane parti} - removed. The lettering is the same as 
