GLOSSAET. 375 



Buff— A. series of modified feathers. 



iSeansorial—CiapiMe of climbing. 



Scansorial tail — Tail feathers sharp and stiflF, as in the scansorial 



birds (Woodpeckers). 

 Seapvla — Shoulder blade. 

 S(SM<«Ma<«— Provided with scutella ; said of the tarsus when 



covered with broad plates in a regular vertical series, and 



separated by regular lines of impression. 

 Seutelhim — One of the tarsal plates or scutella. 

 Seeondaries — The quills growing on the fore arm. 

 Second dorsal — The posterior or soft part of the dorsal fln, when 



the two parts are distinctly separated. 

 Sectorial tooth — One of the premolars of cai-nivora, adapted for 



cutting. 

 Smdpalmate — Half- webbed ; having the anterior toes more or less 



connected at base by a webbing which does not extend to the 



claws. 

 Septum — A thin partition. 

 Serrate — Notched, like a saw. 

 Sessile — ^Without a stem or peduncle. 

 Setaceous — Bristly. 

 Should&r girdle — The bony girdle posterior to the head, in fishes, 



etc., to which the anterior limbs are attached. 

 Soft dorsal — The posterior part of the dorsal fin in fishes, when 



composed of soft rays. 

 Soft rays — Fin -rays which are branching and articulate. 

 SpiTie — ^Any sharp projecting point; in fishes, those fin -rays 



which are unbranched, inarticulate, and usually more or less 



stiffened. 

 Spinous— ^tiS, or composed of spines. 

 Spinous dorsal — The anterior part of the dorsal fin in fishes, 



when composed of spinous rays. 

 Spiracles — Openings in the head or neck of some fishes and 



Batrachians. 

 Spurious — Said of the first primary when less than about one- 

 third the length of the second. (The student will notice that 



in Oseines the presence of a short or spurious quill indicates 



ten primaries ; its absence, nine.) 

 Sternum — The breast bone. 

 Striate— Stiiped or streaked. 



