VOL.1] STEWART-BOTANY OF THE GALAPAGOS ISLANDS 113 



on the inaccessible parts, no specimens were taken, but seen 

 from a distance they had the general appearance of this species. 

 Tower Isl. : common in various places, forming dense thickets 

 3-4 ft high The specimens on this island are more erect than 

 they are on Wenman, (no. 3005). Wenman Isl. : common 

 in thickets on tops of the cliffs, and hanging down the sides of 

 the same, (no. 3006). Plates XIII, fig. 1 ; XIV. Endemic. 



O. insularis, nov. sp. 

 floribus fructuque ignotis. , • i j 



A species easily distinguished from the others on the islands 

 by its smaller size, and the shorter and more numerous spines. 

 Albemarle Isl.: Tagus Cove, common on the sides of the 

 tufa hills surrounding the cove. A low Opunha with numerous 

 short stiff spines was reported from the Banks Bay region of 

 this island by Mr. F. X. Williams. From his description it 

 seems likely that it is this species, (no. 3014). Plates IX, fig. 

 1 ; XV. Endemic. 



O myriacantha Weber in Bois, Diet. d'Hort. 894 (1898) ; 

 R.. (U 181 -Albemarle Isl. : Cowley Bay, occasional on 

 fhe lowerparts, and up to within a few hundred feet of the top, 

 ace to^. H. Beck; Iguana Cove, rare in the immediate v.cm.ty 

 of ihe cove but abundant a short distance O" ^''h^^'d^i ''' 

 TaUs Cove, fairly abundant on the rim of the crater at 4000 

 I 'and at vakous places on the sides of the mountain the spec - 

 mens which occur here are smaller than is "="^1 ^ 'he ca e 

 Turtle Cove, common near the shore, specimens of large size, 

 vXmit ve y abundant on beds of basaltic lava on the lowe 

 parts, often forming forests 25-30 ft. in height ; most abundant 

 below 100 ft., but found to some extent as high up as 550 ft. 

 where the specimens are smaller in size than lower down 

 occasional on the floor of the crater at 2750 ft, (no. 3008) 

 Baerington Isl.: abundant everywhere, forming trees 12 or 

 more feet in height. The photograph of the so-called O. gala- 

 pageia. published by Hemsley, (5), fig. 75, is evidently of this 

 species, as it does not show the broadly spreading crown so 

 characteristic of 0. galapageia. The photograph shows the 



