would easily be mistaken for some kind of weed. The protoconch 

 (Fig. 40, C, PL IX) from the bulbous nucleus rapidly assumes the 

 shouldered body whorl, the syphonal tube is very short as compared 

 with the adult. 



RANELLA CAUDATA Say 



PI. VII. Fig. 41. Length 24 mm. 



This shell recognized by Thomas Say, in 1822, as belonging to 

 the genus Ranella was very properly recognized by Verrill as coming 

 under the genus Eupleura of H. and A. Adams. A comparison of the 

 animal with that of Murex erinaceus, of England, as given by Jef- 

 freys shows similar features of color, small tentacles, etc. The 

 color of the foot is light yellow, the head and tentacles are white. 

 The foot has great powers of extention anteriorly (Fig. 41, A). 



The species has never effected a lodgment north of Cape Cod. 

 It extends from the southern shores of Cape Cod along the entire 

 coast to the Gulf of Mexico. 



TRICHOTROPIS BOREALIS Sowerby 

 PI. VII. Fig. 42. Length 15 mm. 



The animal is whitish in color, muzzle deeply notched, tentacles 

 rather short and blunt, the lower third slightly enlarged and thick- 

 ened, supporting the eyes. The English representative is described 

 as having rather long and tapering tentacles and muzzle elongate, 

 pointed at the end and deeply split. My drawing was made from a 

 specimen only partially expanded. 



The nucleus for one whorl is smooth with slight revolving stria- 

 tions and then appear fine revolving ribs. The outer margin of the 

 aperture was broken, as shown in the figure, 42 (A), PL IX. 



ADMETE VIRIDULA Fabricius 

 PI. VII. Fig. 43. Length 13 mm. 



The tentacles are rather short and blunt, slightly apart at their 

 bases, eyes on slight elevations at outer base of tentacles. Foot 



20 



