(M.OSSARY OF TECHNICAL TERMS. XXV. 



Imbricate. Overlapping, like the shingles on a roof. 



Incisors. The front or rutting teeth. 



Interdorsal. Between the dorsal fins. 



Interorbital. The space between the orbits. 



Isthmus. The fleshy projection of the body separating the gill openings. 



Jugular. Pertaining to the throat; placed below the throat. 

 Juxtaposed. Contiguous; placed near together. 



Lanceolate. Spear-shaped; gradually tapering toward the extremity. 



Lateral. At or toward the side. 



Lateral line. A series of mueiferous tubes forming a raised line along the side 



of the body. 

 Lunate. Shaped like a crescent moon. 



Mandible. The lower jaw. 



Maxilla or maxillary. The upper jaw, or pertaining thereto. 



Maxillaries. The hindmost bones of the upper jaw; preceded by the pre- 



maxillaries. 

 Median. Pertaining to the middle. 

 Mediolateral. Between the middle and the sides. 

 Mesocoracoid. A bone of the pectoral arch or shoulder girdle. 

 Molars. Blunt and rounded grinding teeth. 

 Mueiferous. Producing or containing mucous or slime. 



Nape. The part of the neck adjoining the skull. 

 Nasal. Pertaining to the nostrils. 

 Nasoral. Between the nostrils and the mouth. 

 Nictitating membrane. An inner eyelid. 

 Nuchal. Pertaining to the nape. 



Obsolete. Faintly marked: scarcely evident. 



Obtuse. Blunt. 



Occipital. Pertaining to the occiput or hinder part of the skull. 



Ocellus. An eye-like spot. 



Oesophagus. The gullet. 



Opercle or Operculum. Gill cover; the posterior membrane bone of the side of 



the head. 

 Orbit. The eye socket. 

 Osseus. Bony. 

 Ovate. Egg-shaped. 



Palate. The roof of the mouth. 



Palatines. Membrane bones on each side of the palate. 



Papilla. A small fleshy projection. 



Papillose. Covered with papillae. 



Pectoral. Pertaining to the breast. 



Pectoral fins. The anterior or uppermost of the paired fins, which correspond 



to the anterior limbs of the higher vertebrates. 

 Peduncle. The stalk or basal support of the tail. 

 Pelagic. Living on or in the open seas. 



Pelvis. The bones to which the hind limbs or ventral fins are attached. 

 Pharyngeal bones. Bones behind the gills in the oesophagus or gullet. 

 Posterior. Relating to the hinder portion. 

 Postorbital. Behind the eye. 

 Precaudal. Anterior to the tail portion. 



Premaxillaries. Two bones forming the front portion of the upper jaw. 

 Preopercle. The membrane bone between the cheek and the gill cover. 



