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- 

 , mary ; those formed next in suc- 

 cession are secondary ; and so on. 



SECRE'TION. From the Latin, secer- 

 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'TORY. Belonging or relating 

 to secretion. 



SEMICOR'NEOUS. From the Latin, 

 semi, half, and cornu, 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'PTIFORW. 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. 



SJPHU'NCULUS. A cylindrical canal 

 perforating the partitions in poly- 

 thalamous shells. 



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 Trochoides. 

 (page 46). 



SOLEMY'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 the 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 stria. 

 A diminutive channel or crease. 



STRI'ATED. Scored, or covered with 

 fine thread-like lines. 



STRO'MBUS. Latin. In Greek strotn- 

 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. 



SuBtESOPHA'cEAL. Placed beneath the 

 oesophagus. 



SUB'ROTUND. Nearly globular. 



SUB'ULATE. Awl-shaped. 



SUCCI'NEA. From the Latin, sue. 

 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 sulcus. 



SU'LCUS. Latin. A furrow. 



SU'MMIT. The tip or apex. 



SU'PERFICIES. From the Latin, super, 

 above, and fades, face. The sur- 

 face. 



SUPERPO'SED. From the Latin, super t 



