EiGENMANN : HxpRDiTiON TO Cf.ntrai. South Amf.rica. 309 



Oy. San Juan, Aim-nlina. 



Coll. Nos. 2500 25 1 J. Rio S.m Juan and irrigating canals. 



I'd). 25, 27, 1909. 



100. Rio Colorado, Argentina. 



Coll. Xos. 2529-2530. Chocl-choc'l, tributary of Rio Negro. 



March 4, 1909. 



Coll. Nos. 2513-2528. Rio Colorado. March 5, 1909. 



Coll. Xos. 2531-2532. Muddy ponds twenty miles east of 



town of Colorado. March 6, 1909. 



101. Buenos Aires, Rio de Prata. 



Coll. Nos. 2533-2536. March 11, 1909. 



102. Asuncion, Paraguay. 



Coll. Nos. 2540-2542. Rio Paraguay. March 23, 1909. 



Coll. Nos. 2543-2544. Cerro de Lamliare, five miles below 



Asuncion in saline swamp. 

 Coll. Nos. 2546-2553. Bays in front of and near Asuncion. 



March 30, 31, 1909. 

 Coll. Nos. 2554-2556. Rio Paraguay. 



103. Sapucay, Paraguay. 



Coll. Nos. 2557-2576. Mountain rills near town. 



April 2, 1909. 

 Coll. Nos. 2577-2585. Arroyo Pona. April 5, 1909. 



104. Arequa, Paraguay. 



Coll. Nos. 2586-2591. Laguna Ipacary. A])ril 7, 8, 1909. 



105. V'illa Hays, mouth of Rio Confusso, into Rio Paraguay. 



Coll. No. 2593. April II, 1909. 



Coll. Nos. 2594-2599. April 13, 14, 1909. 



106. Corumba, on Rio Paraguay, Matto Grosso. 



Coll. Nos. 2650-2661. Lagoons and rivers near town. 



April 28, 1909. 

 Coll. Nos. 2662-2666. Rio Paraguay. April 2 (-), 1909. 



Coll. Nos. 2695-2702. Rio Paraguay. May 9, 1909. 



107. Urucum Mountains, 25 miles back of Corumba, Matto Grosso. 



No numbers. April 27, May 2, 1909. 



108. Puerto Suarez, 15 kilometers across bay from Corumba, Bolivia. 



Coll. Nos. 2667-2690. One mile from village. May 6, 1909. 

 No numbers and 2691-2694. May 7, 1909. 



109. Sao Luiz de Caceres, Matto Grosso. 



Coll. Nos. 2703-2708. Rio Paraguay. May 23, 1909. 



