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and would undoubtedly result in the discovery of many new and char- 

 acteristic species. On such an expedition the investigator should 

 not try to cover the whole island, as was necessary in rny case, but 

 should settle down for a month at a time in two or three localities and 

 explore them thoroughly. Bayamou with its very varied surroundings, 

 and near which are found some extensive and interesting caves, would 

 be one profitable stopping place, and has the advantage that tolerable 

 food and quarters can be obtained, and communication with the outside 

 world is easy by rail to San Juan. Adjuntas, on the south side of the 

 mountain range, is another place with the same advantages. The south 

 side of the island is rather more interesting than the north, where the 

 dry and rainy seasons are not so sharply defined. 



Very interesting are the two small islands. Culebra and Vieques, and 

 both would give good returns under a prolonged stay. 



The only large tract of virgin land is the mountanous northeastern 

 part centering in the almost inaccessible mountain top, El Yunqe. 



To explore the fauna of this unique locality one should be provided 

 with food supply and tent, and making one of the coffee estates nearby 

 headquarters, should take trips for a few days at a time. Horses are 

 out of the question on such a trip, and guides as such are useless, as 

 none of them have ever been through there; still a native is very help- 

 ful to have along, as he will cut you through the thorny luxuriant trop- 

 ical underbrush with his machete, where you would be absolutely 

 barred without him, or at least his machete. 



I found a strong beating net with plenty of extra netting very use- 

 ful in collecting. Sifting can not be practiced easily because of the 

 extreme humidity of the soil. 



During my stay in Puerto Eico I met the most courteous reception 

 from everybody, and my friendly intercourse with many natives of dif- 

 ferent stations in life was a help to me while there, and a happy recol- 

 lection now. Particularly am I indebted for identification of plants, 

 and much other valuable information, to the learned Dr. Agustin Stahl, 

 of Bayamon, who is a close observer of nature and has made large 

 collections and very fine colored drawings of life histories of many 

 insects. For most hospitable reception and readily given explanations 

 about agricultural matters, I wish especially to thank Senor Manuel 

 Gonzales, of Hacienda "Casualidad," near Aguadilla; Senor G.Bianchi, 

 "(Central Pagua," Anasco; Senor Santiago Pietri, "Esperanza," Ad- 

 juntas, and the Mulero family, on Culebra Island. 



From the alcaldes in all the towns 1 visited, as from the American 

 officers stationed there, I received helpful courtesies. But perhaps 

 most highly of all receptions did I prize the unmistakable glad wel- 

 come extended to me as an American citizen all over the island by the 

 poorest class of native laborers. They had nothing to give, and it was 

 only meager information of any kind I was able to wrestle from them 

 with my very limited Spanish ; but the eagerness to please, the activity 

 with which an entire family would turn out to dig in the ground, turn 



