201 



lower or sharp end being free from the animal. 



When the animal is in motion this operculum lies transversely 

 across the upper side of the posterior part of the animal's foot 



The nucleus of the young shell is white and glassy, and after a 

 few turns the spire resembles a bluntly pointed, round peg After 

 this the upper end of the whorls rapidly enlarges, as also does the 

 length of the whorls from the anterior end of the shell to the 

 shoulder. 



In the adult the body of the shell is covered with numerous 

 revolving lines, more prominent near the anterior end of the shell 



On the spire of some specimens there are also strong revolving 

 lines while on others these lines are entirely obsolete. The shoul- 

 der of the last whorl is rather concave and forms a shallow sub- 

 canal around the shell at the base of the spine, but this, like all 

 other characters of shells, is very variable, and in some individ- 

 uals it is absent. 



♦v, 7? e Wh °I? S ? eI1 is covered wi th a dirty yellowish epidermis 

 that frequently darkens into chestnut color. The shells are quite 

 brittle and very frequently broken, which perhaps is due to the 

 thin, sharp outer lip, and an excessive amount of carbonate of 

 lime in their composition. The bungling manner in which the 

 animal repairs these fractures does not add to the beauty or at- 

 tractiveness of the shell, which even in its perfect state is not very 

 inspiring, especially when we consider the beauty of many other 



3051 Terebra simplex Cpr. 



The animal that inhabits this shell is of a pure, pearly white 

 «£™; 1 wl Q th ° ut 1 s P°t° r blemish. When fully extended, its foot is 

 about 1-3 the length of the shell. The proboscis is slender, about 

 T f + ^ ng vf S „ e S°°l of the animal > gracefully curved over the back 

 ot the shell, and when the animal is in motion it forms an interest- 

 ing and conspicuous part of the creature, and seems out of all 

 proportions in its length to the rest of the animal's body This 

 animal has no tentacles, but the eyes are situated on mammillated 

 tubercles that Protrude from the body midway between the foot 

 and proboscis The eyes are small, dark and keen; the foot is 

 truncated in front and rounded behind. The operculum is earne- 

 rs unguiculated in form, and lies on the upper side of the nos- 

 wuSwwd." ' the f ° 0t ' ThlS SheH iS abundant at San Diego and 



3052 Hemphill, Henry: 



lowitg neW SP6CieS ° f Bulimulus - Zoe 4:395 - Describes the fol- 



3053 Eulimella occidentalis 



i™"? h< L n S I na11 ' turi ? cula ted, white, shining, transparent, consist- 

 ing of about nine rather flatfish convex whorls, with a single fine 

 revolving threadlike lirae above the periphery, and with very fine 

 microscopic revolving strias beneath, observable only with a good 

 glass and light; suture deep; aperture subquadrate; lip simple 

 acute; columella straight. Length 4, breadth 1 mm " Simpie ' 

 Type locality:— mudflats between tides, San Diego Cal 

 The above title is rather unfortunate, as it does not describe 

 a new Bulimulus and Dr. Dall says the shell proves noTt .belong 



mus pr S^TlO) *' bUt & SPedeS ° f A1Mna (see U. S nat 

 o 



