WORMS. TESTACEA. 62. Patella. 197 



577. P.-ungarica. -Entire, conic, longitudinally striate, 

 with a pointed hooked revolute crown. 



Sr. Zool. t. go.f. 147. Donov. t, 21. f. \. Da Coita t. i.f. 7. 



Sfieli about an inch wide, reddish or flesh-colour, often covered 

 with a hairy skin, fometiines tranfverfely plaited, within fmooth 

 rofy-White : margin often crenate : crown on one side, much 

 recurved. 



578. P. militaris. Entire, white, conic, striate and 

 faintly reticulate, with a pointed hooked obliquely 

 recurved crown. 



Montague tab. 13. f. n. Donovan tab. 171. 



Shell about half an inch wide, finely striate both ways : CJOWH 

 revolute, turning to one side : aperture nearly orbicular. 



579. P. intorla. Nearly entire, ferruginous, with, alter- 

 nately larger and lesser ribs : crown slightly re- 

 curved. 



Br. Zool. tab. go. f. 148. Donovan tab. 146. 



Shell near an inch wide, covered with a ferruginous skin, gene- 

 rally decorticated at top, pale within, with numerous fubimbricatc 

 ribs : aperture oval : margin entire or slightly toothed. 



580. P. lacustris. Very entire, oval, whitish, membran- 

 aceous, with a pointed recurved crown. 



Donovan tab. 147. Da Costa tab. 2.y. 8. 



Shell a quarter of an inch wide, covered with a greenish or dusky 

 skin, fometiines slightly striate or tranfverfely wrinkled : crown 

 pointed, near one end. 



581. P. oblonga. Very entire, oblong, contracted in 

 the middle, horn-colour, with a pointed reflected 

 oblique crown. 



Donovan t. 159. Philos. Trans. 76. t. Q.f. i. 2. 3. 5. 



Shell a quarter of an inch long, one tenth wide, covered with a 

 greenish skin: crown final!, turning to one side, near the narrow 

 part of the margin. 



D. Entire, without the pointed crown. 



582. P.pelludda. Obovate, gibbous, pellucid, yellow- 

 ish-horn-colour with 4 blue rays of dots on one 

 side. 



Br.Zool. t. 90. /. 150. Donov. t. 3. /, i. Da Costa t. i./.g. 6. 



Shell 3 quarters of an inch wide, more or lefs conic, fometimes a 

 little depressed with an obfcure crown, with 3-5 rays of blue dots 

 on one side from the crown to the margin. 



583. P. parva. Entire, oblong-orbicular, white with 

 reddish rays, finely striate, with the point of the 

 crown nearly marginal. 



Donovan tab. 21. f. 2. Da Costa tab. B.f. it. 



Shell 3 eighths of an inch long, 2 eighths wide, mostly covered 

 with a dusky skin, circularly Wrinkled, Whitish or bluish, radiate 

 with reddish, more or less distinctly: crown obtufe : margin very 

 entire. 



584. P. bimaculata. Yellow, with an oblong black spot 

 at each end, oval, convex, depressed, with an obso- 

 lete crown. 



Montague Brit. Shells, p. 482. lab. 13.7. 8. 



Shell a quarter of an inch long, an eighth wide, opak,e ftnooth 

 xvith a tranfverfe oblong black fpot at the fmaller end, and a lon- 

 gitudinal one Bear the margin, within yellow ; mr$in lain, 



