80, PROCEEDINGS OF THE NATIONAL MUSEXJM vol. io« 



which closely resembles the Volcdn de ChiriquI specimens and may be 

 identical with them. The Baly specimen mifortunately is a female. 

 The only other specimens that I have seen from that region are two fe- 

 males collected by P. J. Darlington at Aracataca, Magdalena Province, 

 Specimens closely resembhng these have been collected in Venezuela, 

 Trinidad, Brazil, Peru, and Bolivia. On the whole, these South 

 American specimens may be a little longer, the pale spots on the 

 elytra larger, and the last three antennal joints, instead of being 

 piceous, are generally pale. Because of these and some other minor 

 differences, including the aedeagus, I am resurrecting Baly's name 

 bivittaticollis for a South American subspecies. Future collections 

 and study will contribute more knowledge to the subject. 



Iceloceras sexplagiatum bivittaticole (Baly) 



Figure 2,c 



Diabrotica bivittaticollis Baly, Journ. Linn. Soc. Zool., vol. 19, p. 257, April 1885. 

 Neobrotica sexplagiata (Jacoby), Jacoby, in part, Biologia Central!- Americana, 

 Coleopt., vol. 6, Suppl., p. 331, 1892. 



The only differences between this and typical Iceloceras sexplagiatum 

 are in the somewhat larger size (length 4-5.5 mm., width 2-2.5 mm.), 

 the larger pale spots on the elytra, and the wider and longer black 

 vittae on the pronotum. The last three joints of the antennae, instead 

 of being black, are usually pale brown. The aedeagus (at least of 

 Tingo Maria specimen) is slightly different. The tip of the abdomen 

 dorsally is darker. The small notch of the middle tibiae of the male 

 is like that in typical /. sexplagiatum, these two forms differing from all 

 the rest by having a much tinier notching. 



Type: In British Museum (Natural History), collected on the 

 Magdalena River, Colombia. 



Distribution: Colombia: Aracataca, Magdalena Province, P. J. 

 Darhngton; Rio Dagua, W. Rosenberg. Peru: Tingo Maria, 

 Dieguez; Rio Charapa, C. H. T. Townsend. Venezuela: Caracas, 

 Panduze; San Esteban, E. Simon, 1st Jacoby collection (? Colombia or 

 Venezuela). Trinidad: G. E. Bryant. Brazil: Bahia, P. G. Russell; 

 Ceara; Independencia, Parahyba, W. M. Mann and Heath; Jataky, 

 Goiaz Province; Bonito, Pernambuco Province, Dr. Brauns, 2d Jacoby 

 collection; Santa Catharina. Bolivia: Rurrenabaque, Rio Beni, W. 

 M. Mann; Guanay, Mapire River, 1500 ft,, Stuart. 



Iceloceras maximum^ new species 



Figure 3,c 



Approximately 7.5 mm. in length, elongate oblong oval, alutaceous, 

 only faintly shining, head and prothorax densely and finely punctate, 

 the elytra more coarsely and densely punctate; deep yellowish or 



