GASTEROPODS 379 



T. quadripunctata. Much smaller than the preceding; rose-red, 

 with four conspicuous reddish-brown dots on the back, two on each 

 side of the median dorsal groove. Found in Florida. (Plate LXX.) 



On the California coast are also several species of Trivia and one 

 Cyprcea, but they belong to the Southern California peninsula, and are 

 not commonly found farther north than Santa Barbara. The cowry is 

 called C. spadacea; it grows to a length of about two inches, is highly 

 polished, with white base and sides, and is bright chestnut above. As 

 is usual in the cypraeas, the spire is covered with enamel. . 



T. californica. A species found at Monterey and thence south. It 

 lacks the median dorsal groove, and has a whitish color-streak instead. 

 The ribs are white, and the ground-color of the shell is dark brownish- 

 red. These little shells, when found upon the beach, are called ' coffee- 

 shells," from their somewhat striking resemblance to the coffee-bean, 

 being flat on one side and rounded upon the other, and otherwise resem- 

 bling it in size and color. (Plate LXX.) 



T. solandri. This species may be found at Santa Barbara and San 

 Diego. It is twice as large as the last species, and has a very deep groove 

 in the back and widely separated ribs. Color rose to brown. The 

 groove on the back penetrates into the white portion of the shell. 



FAMILY DOLIIDJE 



This small family furnishes two conspicuously handsome spe- 

 cies belonging to the genus Dolium, which range from Hatteras 

 southward into the West Indies. 



GENUS Dolium 



L>. galea and D- perdix. The animal in both of these species has a rela- 

 tively large foot, which spreads out while in the act of creeping and seems 

 far too bulky ever to be withdrawn into the shell. It is square in front, 

 and, bulging out far to each side, tapers to a blunt point behind. The 

 most noticeable feature of the animal, however, is the great develop- 

 ment of its proboscis, which is quite as long as the shell itself. The 

 siphon is also long and is curved over the back of the shell. The 

 operculum is wanting in adult specimens. The shell of D. galea some- 

 times attains a length of eight inches, with a diameter of about six inches ; 

 the other species is not quite so large. They are both yentricose, 

 thin, inflated shells, with large body- whorls and crenulated lips. Both 

 are slightly umbilicated and ornamented with revolving, regularly spaced 

 ribs. The ribs of D. perdix are not so highly raised, but they are painted 

 with light reddish-brown spots. D. galea is white, with a lower spire and 

 deeoly channeled sutures. (Plate LXXI.) 



GENUS Pyrula 



P. papyratia. One of the commonest as well as one of the hand- 

 somest of American shells. It is a Floridian species, found in shal- 

 low water and on sandy bottoms. The animal greatly resembles that 



