780 PATELLA. 
185. Patella complanata : fhell depreffed-liemifpherical, 
obfoletely cancellate, varied with white and brownifh. 
186. Patella virgata : fhell ovate, longitudinally ftriate, 
whitifh with brown rays and crown, within perlaceous. 
187. Patella nivea : fhell fubconic, folid, glabrous, 
fnowy, with tranfverfe concentric rings. Inhabits Africa. 
188. Patella grifea : fhell oval, with crowded radiate 
grooves, within polifhed ; crown nearly central. It in¬ 
habits Africa. 
189. Patella navicula : fliell narrow, with decuffate 
flriae, rofy with a whitifh callous belt on one fide in the 
middle, and whitifh bottom, the margin is revolute on 
each fide. 
190. Patella cingulata : (hell fuboval, obfoletely ftriate, 
ferruginous, with two elevated obfcurely barred belts ; 
crown nearly central. 
191. Patella fcarpa : fhell clear white, with undulate 
ftriae, narrow, the broader fide with an acute callus, the 
narrower fide repand. 
192. Patella parva: fhell final], entire, without glofs, 
whitifh, faintly radiate with red. This is defcribed and 
figured by Donovan. It is found on the Devonfhire 
coafts, but is very rare. 
193. Patella oblonga, or oblong frefh-water patella: 
fhell perfectly entire, oblong, comprefled, with reflex ob¬ 
lique mucronated vertex. Found in the waters near 
Beaconsfield, adhering' to the leaves of the Iris pfeuda- 
eorus. It is about a quarter of an inch in length, 
and a tenth of an inch in diameter, turned downwards, 
and leaning to one fide. Defcribed by the Rev. John 
Lightfoot in the Phil. Tranf. for 1786. It is fhown, mag¬ 
nified, on the annexed Plate, at fig. 16. 
V. Perforata. Crown, or tip, perforate. 
194. Patella fiffural fhell oval, conic, with reticulate 
ftriae, cleft on the fore-part ; crown recurved. It is 
found on divers parts of the coafts of Europe and Barbary, 
and in this country. 
195. Patella fiffurella: fliell grooved and perforated on 
the tore-part; crown recurved. It is found adhering to 
ftones in the Iceland feas. 
196. Patella puftula: fhell oval, gibbous, convex, with 
reticulate ftriae, and crenate margin. It inhabits the 
Mediterranean, Atlantic, and Indian feas. 
197. Patella graeca: fhell ovate, convex, reticulate; the 
margin crenulate inwardly. 
198. Patella nimbofa : fliell ovate, ftriate, rugged, 
brown, with an oblong perforation. It inhabits the 
Mediterranean and Atlantic. This fhell is exhibited at 
fig. 17. and the infide of it at fig. 18. 
199. Patella nubecula : lhell f'ubovate, rugged, white, 
radiate with red, with an ovate perforation. It inhabits 
the Mediterranean ; and refembles the preceding. 
20a. Patella pifta : fliell ovate, folid, clouded, white 
and green, with oblique, undulate, alternate violet and 
white rays. It inhabits the Straits of Magellan. 
201. Patella Barbadenfis : fhell oblong, unequally 
ftriate; within fmooth, milk-white, with greenilli bands; 
margin crenulate. It inhabits Barbadoes. 
202. Patella Jamaicenfis : fliell whitifh, tranfverfely 
annulate, with longitudinal ftriae covered with foliaceous 
tubercles, which are larger outwardly. This is found on 
the coafts of Jamaica and Barbadoes. 
203. Patella Caffra : fliell ovate, comprefled, ftriate, 
very finely annulate, and radiate with black ; bottom 
milk-white ; perforation nearly central. It inhabits the 
Cape of Good Hope. 
204. Patella perforata: fliell a little convex, tranfverfe¬ 
ly wrinkled, brow’nifh with ftraw-eoloured rays and fpots, 
with longitudinal ftriae alternately larger and fcaly. 
205. Patella phorphyrozonias : fliell oblong, comprefled, 
unequally ftriate, white with five purple interrupted 
belts, within greenifli-white. It inhabits North Ame¬ 
rica. The perforation is very minute, orbicular, and 
Surrounded on the infide with a red circle. 
206. Patella rofea : fliell very thinly ftriate, with alter¬ 
nate rofy and white rays; the perforation is oval. 
207. Patella fcutellum: fhell each fide repand, com- 
prefied; perforation radiate with grooves. 
208. Patella avellana : fhell thin, white, with very fine 
ftriae; perforation oblong, and divided by a ligament. 
There is a variety of which the margin is a little revolute 
on each fide. 
209. Patella fpinofa : fliell ovate, convex, white, with 
elevated ftriae, growing thicker towards the margin, and 
marked with four rows of tubercles, the exterior tubercles 
are fpinous. 
210. Patella denticulata : fhell ovate, gibbous, whitifli 
radiate with brown, within green, with elevated ftriae; 
margin denticulate, crenate within. 
211. Patella nodulofa : fhell ovate, convex, with ele¬ 
vated nodulous ftriae, crofling thinner tranfverfe ones, 
within white ; crown black. 
212. Patella angufta : fhell deprefled, white, with ele¬ 
vated ftriae, every fourth of which is larger ; perforation 
very narrow, and furrounded with a chefnut band on the 
outilde, and a green one within. 
213. Patella inaequalis : fhell ovate, convex, with de¬ 
cuffate ftriae, white, Something triangular on the broader 
fide ; perforation furrounded with an elevated ring, round 
which is a red line. 
214. Patella minuta: fhell oval, pyramidal, reddifh, 
with twelve elevated white ftriae ; bottom white ; perfo¬ 
ration oval, and nearly central; margin denticulate. 
215. Patella confperfa : fhell ovate, convex, ftriate, 
yellowifh, with red dots, and three oblique rays : within 
Smooth, white. 
216. Patella rubefcens : fliell oval, ftriate reddifh, with 
a wdiite band in the middle; within it is white; margin 
entire; perforation linear. 
217. Patella fanguinea : fliell oval, thin, red, within 
greenifli-white, with longitudinal ftriae crofling finer 
tranfverfe ones, which are rugged outwardly. 
218. Patella veiitricofa: fhell oval, ventricofe, with 
decuffate red ftriae, within white; crown deprefled, with 
an orbicular perforation; margin entire. 
219. Patella triradiata: fhell oval, flattifh, ftriate, white, 
with three.brown rays, within whitifh,perforation linear; 
margin entire. 
220. Patella tenuis: fliell oval, a little convex, pellu¬ 
cid, longitudinally ftriate, white, with five halt-brown 
rays; within yellowifh. 
221. Patella melanozonias: fhell convex rofy, with 
an interrupted black band, and elevated unequal white 
ftriae; within fmooth, white; margin denticulate. 
222. Patella effufa : fliell convex, rofy, with elevated 
nodulous white, alternately larger ftriae; perforation round 
and large. 
223. Patella punicea: fliell convex, chefnut, with un¬ 
equal crowded decuffate ftriae, within fmooth, with al¬ 
ternate green and white bands; the perforation is round. 
224. Patella rufefcens: fliell convex, white fhaded with 
red, and here and there ftriate with red, with granulate 
ftriae ; w’ithin it is fmooth and white. 
225. Patella dimidiata : fliell convex, above clear white, 
cancellate, longitudinally ftriate towards the margin, 
with a rofy band. 
226. Patella laffea: fhell convex, white, with unequal 
acute glabrous ftriae; within fmooth ; the crown is rofy ; 
the perforation large and orbicular. 
227. Patella pyramidalis : fliell convex, rofy, ftriate, 
with twelve fmooth ribs ; within fmooth and greenifli- 
white. 
228. Patella bicolor: fliell narrow, alternately radiate 
with chefnut and white, with unequal, thick, lamellate, 
ftriae; within fmooth, white, margin crenulate. 
229. Patella erythrocephala: fliell convex, white, with 
red lines outwardly, and elevated rugged contrary ftriae, 
ten of them larger; the margin repand and infledted. 
230. Patella ver-rucofa : fhell above brown, ftriate, ter- 
x minuted 
