Calvert: Odonata of the Neotropical Region. 77 



" Uacaryzal : I am not quite sure of this locality. It is a planta- 

 tion in Matto Grosso either near the R. Paraguay, or near Cuyaba. I 

 think that it is on the Paraguay, not far above the junction of the R. 

 Cuyaba ; at any rate, there is a cattle plantation there, where we worked 

 for some time. 



"You have only a fragment of my Matto Grosso collection of 

 Odonata ; the only serious loss I had in transit was in this group. I 

 had a large "Saratoga" trunk, packed full with specimens, mostly 

 collected along the R. Paraguay in Matto Grosso. In transferring 

 our luggage at Monte Video this trunk disappeared. It must have 

 contained several thousands of specimens, and an especially fine lot. 

 Those I did bring home were turned over to Dr. Hagen for study. 

 After his death they remained at the Museum of Comparative Zoology 

 until after I sold my collection to the Carnegie Museum. I have not 

 seen them for 20 or 25 years, and have no idea what condition 

 they are ir . The trunk I mentioned contained a lot of the rare species, 

 which fly only in the evening after sunset, and in the early morning. 

 I used to get up before daylight to catch them. The colors of this 

 species are rather dull. 



" Along the Paraguay, just before leaving Matto Grosso, I made a 

 discovery, which might have been very important had I remained 

 there. The best time to get rare dragon-flies is before sunrise in the 

 morning. Nearly all the species which are dull brownish or greenish 

 in color — no pronounced tints — are either nocturnal, or at any rate, 

 can be found flying as soon as there is light enough to see them. 

 They also fly in the evening, but are less abundant then. 



Bolivia. 

 " Piedra Blanca (in Portuguese Pedra Branca). A small trading 

 station and custom house, four miles W. of Corumba, and just within 

 the boundary of Bolivia. A road runs from here over the plains to 

 the larger Bolivian towns of the Andes. Piedra Blanca is on the edge 

 of the flood-plain of the R. Paraguay ; there is a lake communicating 

 with the river near Corumba. Practically the collections are the same 

 as those of Corumba, and I only kept them separate because they are 

 from within the confines of Bolivia. 



Paraguay. 

 11 Villeta, a village in Paraguay, as I remember, about twenty miles 

 S. of Asuncion ; at any rate it is a village on the R. Paraguay, noted 



