176 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 7 or 8 

 strong smooth whorls and 7 longitudinal ribs : aper- 

 ture oval-oblong. 



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



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

 rupted by the fcparating line: outer Up sharp, contracted to an 

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

 heah 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. 121./. 17. Br. Zool. t. 82./. 111*? 



Shell about an inch and a half long : aperture ■ 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. ». 17. 



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

 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 

 fmallcr : 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. Bf. 13. 



SAe/Zabove half an inch long, strong, with 4 fpiral ridges 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; . 

 bafe not reticulate. 



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

 striate whorls and remote ribs : beak closed. 



Adams linn. Trans, iil.p. 65. Minute. 



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

 marked with, doubled striae: aperture oval, with a 

 dilated canal. 



lister t. 950./. 44. b. c. Chem. Conch. 9,/. 894. 895. 



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

 aperture oval, ending in a dilated straight canal. 



Obs. Dr. Lister having marked this fpecies as British, declaring . 

 it to have been found at Harwich by Dr. Dale, there can be po 

 V>cstion of the propriety ofits place here. 



