WORMS. TESTACEA. 53. Chitofc, 



*6i 



llifj>idus< 



ORDER III. TESTACEA or SHELLS. 



Animals foft^ of a funple flruElure, and co- 

 vered with a calcareous habitation orjhelL 



53. CHITON. Animal inlmhitinv the fliell a 

 Doris : jliell confifting of fevera! fegments. 

 or valves difpofed down the back. 



Shell with 6 plates or valves* ftriate. 

 Scbrazt Conch!. 3. p. 4-93. tab. 9, fig. 18. 



Inhabits America; middle lized ; blacki^h-gfc'y with white fpots 

 and dots; very finely ilriate, the ilriae minutely granulate. 



TbakJJinui Shell 6-valved, glabrous, oval, Tea green, with a paler 

 middle- line above and thin hyaline border. 

 Schraet. Einl. in concb. 3. f. 509. n. 1 8. 

 Schrcet. n. Litterat. 4, />. 4. /a£. 1, _/$£. 1. 

 Inhabits -. Shell a little eonvex. 



TuherculJ- Shell y-valved ; body tuberculate. 



tus Schrtzt. conchy I. 3. #. 494.' tab. fy fig* 19. 



Inhabits America; oblong oval, narrow, with tubercles above 

 difpofed in a quincunx; the fides cinereous mix--d with white 

 and marked with brown undulate bands; back greemfh with 

 a oroad deep black band. **- 



*Cfinitus. Shell 7-valved, thickly fet with fhort hairs. 

 Penn. Brit. Zool. iv. p.Jl. tab. 36, fig. 1. 

 Inhabits the fead near Aberdeen; not an inch long*. 



Aeuleatus. Shell 8 valved, ftriate: body a little prickly. 

 B ar hut's Shells , p 8. tabs I , fig. 2. 

 Atnczn acad. 8, tab. 3, fig. I, 

 Murr. tell. p. 40. ?«£, 2, _/?£. I, 

 J?aw//. M//. /. 10./. 4. ItfW. GtW / 286,/. B. 

 %ebaMuf. 2. tab. 01, fig. 4. 

 Chemni conch. 10. /«£. 173, _/5V, 1692. 



2. Chernn. conch. 10 ta£ 173, //£. 1 69 1 ? 



Inhabits /jVfo. Shell tubercukte, oval, rough on the upper-part s 

 with narrow fubulate red ilightiy curved unequal prickles ; the 

 hit valve fmaller. 



VOL, IV.— X 



F^ct 



