. The anatomy of the common squid, Loligo pealii, Lesueur. Squids; Mollusks. 15 mentioned. Two or three pairs of foramina for the transmission of the statocygtic nerves pierce the ventral wall of the capsule. A foramen at the edge of the depression for the pedal ganglion transmits the nerve of the crista. Another foramen, for the macular nerve, is situated a short distance inward from the foramen for the eristic nerve. Just in front of the statocysts, two pairs of foramina pierce the cartilage at the base of the pedal process: one pair allows the siphonal nerves to pass from the pedal ganglion
. The anatomy of the common squid, Loligo pealii, Lesueur. Squids; Mollusks. 15 mentioned. Two or three pairs of foramina for the transmission of the statocygtic nerves pierce the ventral wall of the capsule. A foramen at the edge of the depression for the pedal ganglion transmits the nerve of the crista. Another foramen, for the macular nerve, is situated a short distance inward from the foramen for the eristic nerve. Just in front of the statocysts, two pairs of foramina pierce the cartilage at the base of the pedal process: one pair allows the siphonal nerves to pass from the pedal ganglion to the siphon; and the other, which is in front of the preceding and is just exterior to the lateral ligaments, transmits a pair of veins from the orbital sinuses to the anterior vena cava. Several small foramina which are represented in the drawings but which do not merit description, transmit small blood-vessels and nerves. The two preorbital cartilages (Plate I Fig. 1) are attached side by side to the pedal process of the skull and reach outward and forward between the eyes and the pharynx. Each cartilage is a flattened, stocking-shaped bar whose "^ tip (toe) projects downward. This bar lies against the inner surface of the eye and supports certain muscles of the eye. The nuchal cartilage (text figure 5) lies in the muscles of the hver case between the liver and the ventral end of the pen with which it articulates. It is a thick, quadrangular, trough-shaped plate. Two of its angles are directed, one forward, and one backward, and the lateral angles are bent downward around the liver. On the upper side of the cartilage there is a linear grooved surface which articulates with the pen. This articular surface has three grooves, of which the two lateral, articulate with the edges of the pen. The upper edges of the lateral siphonal valves are attached to the cartilage just below the articular surface; the cephalic retractor is attached to the ventral edge of the cartilage; a
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmollusks, bookyear191
