270 PROCEEDINGS OF THE NATIONAL MUSEUM vol. iis 



excavate in a manner similar to that found in the males of both 

 Eucerotoma and Cerotoma. They differ from Eucerotoma in not 

 having such costate elytra and in the long third antennal joint of the 

 female. When compared with A^^. variabilis, however, they appear 

 widely apart and far from being congeneric, and should be put in a 

 separate genus. 



Jacoby had only the female of the species that he named Neobrotica 

 vittatipennis. Otherwise he would not have included that very 

 different beetle in Neobrotica. It is unlike any that I know and 

 deserves a generic place. 



I have taken the opportunity here also to dispose of Galeruca 

 furcata Olivier, a species that has been assigned to various genera 

 from Cerotoma to Neobrotica, and recently placed by Bechyne in a 

 genus he himself described as Metrobrotica. By Bechyne's definition 

 of Metrobrotica "the third and fourth antennal joints of the male are 

 of a very complicated buUd", which generic differentiation applies to 

 his genotype Cerotoma geometrica Erichson but does not fit Galeruca 

 furcata in which the antennae of both sexes are filiform, 



Bechyne has transferred another species, Neobrotica brasiliensis 

 Bowditch, from Neobrotica to Andrector. I have examined a female 

 specimen he determined as N. brasiliensis, in the Frey Museum, 

 and it is misidentified. As far as I loiow there is only one specimen 

 of N. brasiliensis known — the type in the Museum of Comparative 

 Zoology— and this is a female. There are two other species related 

 to it, all three densely and quite coarsely punctate, all three with a 

 broader prothorax than usual for Neobrotica, and all with closed 

 anterior coxal cavities, but otherwise resembling Neobrotica. The 

 antennae are like those found in Neobrotica, having the thu"d joint 

 no longer than the fourth, and the remaining joints gradually shorter. 

 All three species are from the Amazon region. For these I am 

 erecting the genus Potamobrotica. 



Growing out of the study of this genus, Neobrotica, and its closely 

 related genera, a second paper has been prepared to deal with some 

 of the species that have been in the past relegated to Neobrotica, but 

 having excised middle tibiae in the male. In this paper are treated 

 such species as Neobrotica pallida Jacoby, N. achroma Bechyne, 

 A^. analis Weise, N. latifrons Bechyne and A^. lineigera Bechyne. 

 It is being published as "More New Galerucine Beetles with Excised 

 Middle Tibiae in the Male" (Proc. U.S. Nat. Mus., 1966, vol. 

 118, no. 3528, pp. 233-266). 



I wish to acknowledge the help I have had financially from the 

 National Science Foundation in enabling me to visit museums in Europe 

 and South America, both to study type specimens and to see and 

 collect more material. The British Museum (Natural History) 



