112 



CONCHOLOGY.— GLOSSARY. 



stratified rocks with certain cha- 

 racters by which they are distin- 

 guished from the primary rocks. 

 By the term formation geologists 

 understand a series of rocks of the 

 same age. Those rocks which 

 were first formed are called pri- 

 t mary ; those formed next in suc- 

 cession are secondary ; and so on. 



Secre'tion. — From the Latin, steer- 

 nere, to separate. The process by 

 which organic structure is enabled 

 to separate from the fluids circu- 

 lating in it, other different fluids. 

 These separated fluids are also 

 called secretions. 



Secre'torv. — Belonging or relating 

 to secretion. 



Semicor'neous. — From the Latin, 

 semi, half, and cornit, horn. Half 

 or partly horny in its nature. 



Se'pia. — Latin. A cuttle-fish. A 

 kind of paint made from this ani- 

 mal. A genus of cephalopods. 



Se'ptiform. — From the Latin, sep- 

 tum, a partition. In the shape of a 

 partition. 



Se'rrated. — From the Latin, sera, a 

 saw. Like the teeth of a saw. 



Se'rrulated, — Very minutely ser- 

 rated. 



Se'ta. — Latin. A bristle. 



Seta'ceous. ) Bristly ; covered with 



Se'tose. \ bristles. 



Sigare'tus. — A genus of gasteropods. 



Siliqua'ria. — From the Latin, si'li- 

 qua, a pod, A genus of gastero- 

 poda tubulibranchiata. 



Si'nister. — The left. 



Si'nus. — A groove or cavity. 



Siphona'ria. — From the Greek, si- 

 phon, a tube. An order of cepha- 

 lopods. 



SiPHu'xcuLus. — A cylindrical canal 

 perforating the partitions in poly- 

 thalamous sliells. 



So'lar. — From the Latin, sol, the sun. 

 Belonging or relating to the sun. 



Sola'rium. — Latin. A sun-dial. A 

 genus of the family of Troclioides. 

 [page 46). 



Soi.emy'a. — A genus of the family of 

 Inclusa. 



So'len. — From the Greek, solen, a 

 tube. A genus of acephalous mol- 

 lusks {page 86). 



Spa'tulate. — Rounded and broad at 

 one end, and becoming narrow like 

 a battledore or spatula. 



Spheroi'dal. — Resembling a sphere 

 or globe. 



Spi'nal. — Belonging or relating to 

 the spine. 



Spi'nous. ) Covered with thorn-like 



Spi'ny. \ processes or spines. 



Spire. — All the whorls of univalve 

 shells, except the one in which the 

 aperture is situated, which is term- 

 ed the body. 



Spi'ral. — Twisted like a corkscrew. 



Spleen. — An organ of the body, the 

 use of which is not known : it is 

 vulgarly called the melt. 



Spon'dylus. — In Greek, spondulos, a 

 vertebra. A genus' of bivalves, in 

 which the teeth of the hinge lock 

 into each other, like the vertebrae 

 of the spine. 



Squa'mose. — From tiie Latin, squama^ 

 a scale. Scaly. 



Ste'llated. — Consisting of star-like 

 figures. 



Stra'ta. — Latin. Plural of stratum. 



Stra'tum. — Latin. A bed, a layer. 



Stri'a. — Latin. In the plural siri<s. 

 A diminutive channel or crease. 



Stri'atei). — Scored, or covered with 

 fine thread-like lines. 



Stro'mbus. — Latin. In Greek strom- 

 bos, a shell-fish. A genus of gas- 

 teropods. 



Sty' let. — A small style or slender 

 process. 



Subar'cuated. — Somewhat arched. 



Subco'nic. — Somewhat conical. 



Sub(esopha'geal. — Placed beneath the 

 oesophagus. 



Sub'rotund. — Nearly globular. 



Sub'ulate. — Awl-shaped. 



Succi'nea. — From the Latin, suc- 

 cinum, amber. A genus of gaste- 

 ropods, so called from the trans- 

 parent texture and amber colour 

 of the shell. 



Su'lcated. — Furrowed. 



Su'lci. — Plural of svlcns. 



Su'lcus. — Latin, A furrow, 



Su'mmit. — The tip or apex. 



Superficies. — From the Latin, super^ 

 above, and fades, face. The sur- 

 face. 



SuPERPo'sED, — From the Latin, super. 



