382 CALIFORNIA ACADEMY OF SCIENCES. 



by a broad and beautiful can on between two and three 

 miles long. Tlie valley enjoys immunity from the fogs 

 which for a considerable part of the year shroud the 

 seaward slopes, and has, along with its peculiar climate, a 

 quite characteristic vegetation, as will be indicated in the 

 catalogue of species which is to follow. 



To the number of four species which were previously 

 known to inhabit Santa Cruz, my pleasant but laborious 

 weeks of sojourning there have added upwards of three 

 hundred. The list here given numbers, indeed, three 

 hundred and twenty -one. About twenty -five of these 

 are plants indigenous to the Old World, but natural- 

 ized in California. Deducting these five and twenty 

 plants of alien derivation, there remains a list of two 

 hundred and ninety-six indigenous species. Out of this 

 number the very surprisingly large proportion of forty- 

 eight are unknown, except from this or other islands off 

 this coast, and as many as twenty-eight of the forty-eight 

 are, in so far as our present knowledge of the other islands 

 goes, peculiar to Santa Cruz itself. Excluding, then, the 

 four endemic species which had been discovered before my 

 advent to the island, there stand forth, as the result of my 

 own researches, twenty-four entirely new to science. A 

 considerable proportion of these novelties have been 

 described already in some earlier pages of the present 

 volume of Bulletins. Some others were printed in Pittonia, 

 and descriptions of the rest are to be sought in the cata- 

 logue which supplements this paper. It must not be pre- 

 sumed that this list is anything like a complete one. My 

 explorations were limited to the western half of the island, 

 and my time was quite too short for a thorough study of 

 even that part of the whole ground before me. The eastern 

 half remains untouched. What was done was done, as I 

 have indicated, at quite too late a season of the year. 

 Several of the new annuals I could not have characterized, 

 as I found fchem dead and bereft of everything save their 



