1T6 WORMS. TESTACEA. 56. Murex. 



Shell about half an inch long, very sharp-pointed, yellowish, 

 white, purplish-brown, pale rofy, or rufous, fometimes with the 

 reticulations white : whorls feparated by a fine thread-like line : 

 aperture narrow ; the canal turning a little to one side ; outer-lip 

 sharp. 



409. M. septangularis. Taper, pale brown, with 1 or 8 

 strong smooth whorls and 1 longitudinal ribs : aper- 

 ture oval-oblong. 



Montague Brit, shells tab. 9 /. 5. Donov. t. 179. /. 4. 



Shell 5 eighths of an inch long, with 7 angular ribs hardly inter- 

 rupted by the feparating line: outer lip sharp, contracted to an 

 angle at the upper-part, where the margin is a little indented ; 

 beak very short. 



410. M. fuscatus. Taper, yellowish-brown, with 10 or 

 12 very short, tubercled whorls; the volutions with 

 3 or 4 crenulate striae between the tubercled spiral 

 ridges. 



Lister tab. i2i./. 17. Br. Zool. t. 82. /. 111*? 



Shell about an inch and a half long : apetture fmall, oval, ending " 

 in a fmall canal ; the bafe fpirally striate. 



411. M. tubercularis. Taper, chesnut-brown, with 9 or 

 10 tubercled whorls separated only by a slight de- 

 pression : aperture small, oval. 



Montague Brit. Shells. p. 270. n. 17. 



Shell a quarter of an inch long, pointed : aperture fmall, ovalj 

 ending in a canal, fomewhat inclofed by the pillar turning 

 inward. 



412. M. adversus. Taper, pointed, light-brown, with 10 

 or 11 reversed tubercled spires : aperture oval. 



Donovan t. 159. Adams Micr. t. 14. /. 12. Turbo. 



Shell hardly half an inch long : whorls hardly defined by the fepa- 

 rating line, with 3 rows of tubercles on each ; the middle row 

 fmaller : aperture ending in a slight straight canal ; the bafe with 

 2 or 3 fpiral ridges. 



413. M. reticulatus. Taper, rufous brown, with 11 or 12 

 strongly reticulate whorls : aperture oval, angular 

 at the upper part, contracted into a slight canal at 

 the lower. 



Da Costa Brit. Shells p. 117. tab. 8 /. 13. 



Shell above half an inch long, strong, with 4 fpiral r4dges on each 

 whorl crossed by longitudinal rather oblique -furrows, with fome- 

 times a strong rib or two crossing fome of .the whorls : aperture 

 contracted into a very slight canal ; outer-lip a little indented j 

 bafe not reticulate. 



414. M. minutissimus. Taper, pellucid, with 5 spirally 

 striate whorls and remote ribs : beak closed. 



Adams Linn. Trans, iii. p. 65. Minute. 



415. M. contrarius. With 4 reversed swelling whorls, 

 marked with doubled striae : aperture oval, with a 

 dilated canal. 



Lister t. 950.7. 44. I, c. Chem. Conch. g,f. 894. 895. 



Shell about 2 inches and a half long, oval, with rounded whorls : 

 Aperture oval, ending in a dilated straight canal. 



0&jr. Dr. Lister having marked this fpecies as British, declaring 

 it to have been found at Harwich by Dr. Dale, there can.be no 

 question of the propriety of its place here* 



