12 



NORTH AMERICAN FAUNA. 



^Colmnha flavirostris madrensis Nelson. 

 Leptotila capitulis Nelson. 

 Btiteo horcaVis fumoaus Ncl.son. 

 rohjhorus cheriway pallidiis Nelson. 

 I'sittacula insidaris Kidgway. 

 Trogon ambiguus goldmaiii Nelsou. 

 Drijohates scalaris graijsoni Baird. 

 Nyciidromits albicolUs insularis Nelson. 

 Ama::iHa graysoni Lawrence. 

 lache lawrencii Ridgway. 

 Platyj)saris aglauc insularis (Ridgway). 

 Myiopagis piaceiis minimus Nelson. 

 Icterus graysoni Cassin. 



Cardinalis cardinalis viari(e Nelson. 

 Piranga hidentata Jlammea (Ridgway). 

 Vireo Jiaroinridis forreri (Von Jladarasz). 

 Vireo liypocliryseus sordidiis Nelson. 

 Compsntiilypis insularis (Lawrence). Oc- 

 curs also on the mainland near San Hlas. 

 Granalellus francesca' Baird. 

 T/iryothorus lawrencii (Ridgway). 

 TItryothorus laiorencii magdalenw Nelson. 

 Melanotis cwrnlescens lonyiroatris Nelson. 

 Myadestia ohscurus insularis Stejneger. 

 -Merula graysoni Ridgway. 



Cnemidopliorns mariarum Giinther. 



UKI'TiLES. 



FLORA. 



The islands were visited near the end of the long dry season, when 

 most of the herbaceous plants were withered and lifeless, but repre- 

 sentatives of 1.36 species, largely shrubs and trees, were secured. 



The general appearance of the vegetation was the same as that in 

 similar situations on the mainland. Among the most notable plants 

 were the Spanish cedar [Cedrela), three species of wild flg {Ficus), two 

 of PithecoUhium, five of Solunum, two oi Ipomaa, a Passijiora, cassias, 

 euphorbias, a large agave, a large cereus, and two opuntias. 



On San Juanito the vegetation is largely made up of bushes and 

 scrubby trees 8 to 15 feet high, with many agaves on the sandy southern 

 end. Agaves are very numerous also on the northern end of Maria 

 Madre. On the latter island the forest is rather low and scrubby near 

 the shore, but increases iu luxuriance farther up the slopes, especially 

 along the bottoms and sides of the canyons, where Spanish cedars, wild 

 figs, and several other trees attain a large size. In its primeval con- 

 dition, before the advent of woodcutters, it must have presented a fine 

 example ot tropical forest growth. Now, ouly a few specimens remain 

 to show what the original condition must have been. Along the sum- 

 mit of the island the dense forest is made up of slender-trunked trees, 

 called ']jalo prieto' by the natives, which 1 was unable to identify. 

 On Maria Mag'dalena the conditions were similar to those on Maria 

 Madre, but a larger percentage of the original forest still remains intact, 

 although the Spanish cedars are mainly gone. Maria Cleofa is more 

 rocky and sterile, and the trees are stunted and brushy. Several spe- 

 cies found on the other islands appeared to be wanting here. The 

 report on the plants shows that the flora of the islands is very similar 

 to that of the mainland, and the fact that several new species were 

 found may be due to our imperfect knowledge of the mainland flora. 



