46 



GLOSSARY. 



Serricated. Covered with a short, thick, 

 and silky down. 



Serrulate. Having very minute teeth or 

 notches. 



Sesouialterous (Fascia). When both wings 

 of an insect are traversed by a con- 

 tinued band, and either the primary 

 or secondary by another. 



Sessile. Attached to any substance by a 

 base, without a stalk or peduncle. 

 When the head of an insect does not 

 move in the socket of the trunk, but is 

 attached to it by a kind of ligament. 



Setaceous. Bristly ; set with bristles. 



Setce. Bristles, or parts resembling 

 bristles. 



Setiferous. Producing bristles. 



Setiform (Antennae). Short and rigid, 

 tapering from the base to the apex 

 like a bristle. 



Setigerous. Bristly. When antennas 

 terminate in a bristle. 



Setose. Covered with bristles ; furnished 

 throughout with irregular, harsh, bris- 

 tly hair. 



Setulose. Setose, with the bristles trun- 

 cated. 



Sexual. Denoting what is peculiar to 

 the distinction and office of male and 

 female. 



Shagreen. A kind of grained leather pre- 

 pared from the skin of a fish, a species 

 of SquaJus. 



Sheath-winged. Having cases for cover- 

 ing the wings; as, a sheath-winged 

 . insect. 



Shell. The crustaceous or testaceous 

 covering of certain animals; as, the 

 shdl of a tortoise, the shell of a lobster, 

 the shell of an oyster, &c. 



Shell-fish. An aquatic animal whose ex- 

 ternal covering consists of a afcell, 

 crustaceous or testaceous ; as lobsters, 

 crabs, oysters, &c. 



Shining. Reflecting the light, but not 

 intensely. 



Sibilant. Making a hissing sound. 



Siccative. That which promotes the 

 process of drying. 



Silicious. Partaking of the nature and 

 qualities of silex, one of the primitive 

 earths usually found in the state of 

 stone. 



Siinious. Resembling an ape or monkey. 



Simons. Having a very flat or snub 

 nose with the end turned up : concave ; 

 as the simous part of the liver. 



Simple (Oculi). Eyes which do not con- 

 sist of an aggregate of hexagonal 

 lenses. 



Simultaneous. Existing or happening at 

 the same time. 



Sinew. A tendon; that which unites a 

 muscle to the bone. 



Sinistral (as opposed to dextral). When 

 a spiral shell has the aperture on the 

 left side. 



Sinistrorsal. Rising from left to right, as 

 a spiral line or helix. 



Sinistrous. Being on or inclined towards 

 the left side. 



Sinuate. Having large curved breaks in 

 the margin, resembling bays. 



Sinuous. Wavy. 



Sinus. A groove, channel, or depression. 



Siphon. A cylindrical tube ; the pipe by 

 which the chambers of a shell commu- 

 nicate ; a fleshy sucker. 



Siphonostomous. A term applied to 

 crustaceous and other animals fur- 

 nished with a suctorious mouth like a 

 tube. 



Siphunculus. A cylindrical canal perfo- 

 rating the partitions in polythalamous 

 shells, as in Nautilus spirula. 



Sizy. Thick and glutinous ; as, sizy 

 blood. 



Skeleton. The bones of an animal body 

 separated from the flesh and retained 

 in their natural position. When the 

 bones are connected by the natural 

 ligaments, it is called a natural skele- 

 ton; when by wires or other foreign 

 substance, an artificial skeleton. 



Smaragdine. The green splendor of the 

 emerald. 



Socket. Any cavity which receives and 

 holds something else; as, the sockets of 

 the teeth or of the eyes. 



Solids. In anatomy, the bones, flesh, 

 and vessels of animal bodies, in dis- 

 tinction from the blood, chyle, and 

 other fluids. 



Soliped. An animal whose foot is not 

 cloven. 



Solipedes. A family of Mammalia, of 

 the order Pachydermata, having only 

 one apparent toe and a single hoof on 



