70 Russell's Familiar Notice of some of the 



This little shell furnishes the identical color rendered so fa- 

 mous as the Tyrian dye. Linen, accidentally spotted by it, has 

 retained its indelible impression unchanged by any application to 

 remove it. Equally common on the English coast as on ours. 

 See Drummond's Letters to a Young Naturalist, p. 233. 



Cabinet of the Society. 



PURPURA IMBRICATA. Lam. Latin, imbricate or scaly. 



An evident variety of the preceding, and found in all stages 

 of asperity or smoothness, in still waters, and even on our wave 

 beaten coast. The imbricate or scale like processes upon the 

 whorls, give them a curious and pleasing appearance. 



Among Ulva and Zostera (sea weeds) near the City Mills. 



Cabinet of the Society. 



Fusus. Latin, a spindle, (alluding to their usual form.) 



DECEMCOSTATUS. Say. Latin, having ten ribs. 



Ten ribbed Fusus. 



Fragments only, of this fine native shell are usually found upon 

 our beaches ; and occasionally a perfect specimen, but bleached 

 and dead. Very beautiful and perfect specimens I have received 

 from Dr, Ray, of Eastport, Me., where it occurs in native 

 locality. 



Shell two and a half inches long ; whorls five or six, with ten 

 very prominent transverse ribs on the body ivhorl, a character 

 which readily distinguishes the species : minuter transverse and 

 longitudinal striae between the ribs. Aperture about half the 

 entire length. Interior pure white, with brown markings on the 

 lip, (sometimes grooved) corresponding with the ribs. Epider- 

 mis cinereous. Lynn beaches. 



My Cabinet Cabinet of the Society. 



Fusus CORNEUS. Say, Latin, horn like. 



Horn colored Fusus. 



Another fine species, usually found in more perfection than 

 the preceding. Shell more elongated ; volutions seven or 

 eight, sutures profound. Perceptibly striated transversely, 

 covered with a light green epidermis 'which when perfect gives a 

 fine aspect to the shell. Beak much produced. Aperture more 

 than half the entire length ; pure white within. 



