234 PROCEEDINGS OF THE NATIONAL MUSEUM vol. us 



have included those with antennae that do not change to any extent 

 in the male. Some of the species that I have allocated to Trichohrotica 

 differ from T. sexplagiaia in having the third antennal joint short, as 

 in T. ruatanae (Jacoby). These species may eventually be placed 

 elsewhere. 



In trying to classify these Galerucine beetles one is constantly 

 meeting some characters that are found in one genus in species that 

 otherwise seem predominately to belong to another genus. I have 

 been reluctant to make new genera for these species that are mainly 

 one of a kind until others like them tiu-n up, which I am confident in 

 time wUl be the case. For the present I have included such species 

 in the genus to which they appear to be more closely related. More 

 than in any group with which I have ever worked, these beetles inter- 

 mingle in their characters so that few of the genera are clear cut. 

 Six of the species dealt with in this paper, all having excised middle 

 tibiae in the male, have been described as Neobrotica, four as Dia- 

 brotica, and others as species of Phyllobrotica, Luperus, and Chthoneis. 



In a later publication (Ent. Arb. vol. 9, 1958) Bechyne has described 

 the two new genera Deuterobrotica and Eomanita, in both of which 

 the males have excised middle tibiae, although here again Bechyne 

 has made no mention of this character. He took as type of the first 

 genus Diabrotica amplicornis Baly, which species I had placed rather 

 doubtfully in Luperosoma. He described two other closely related 

 species, each represented only by a female, as species of Neobrotica, 

 N. latifrons and A^. lineigera, separating them from Deuterobrotica 

 because they did not have enlarged antennal joints, which, of course, 

 is purely a male character. 



In the genus Bechyne described as Romanita, he named R. amazonica 

 as the genotype and described three more species of widely different 

 aspect and doubtfully assigned Weise's Neobrotica jasciata as the fifth 

 species. Since they are all females it is impossible to be certain that 

 they are congeneric. I have made drawings of those that I have been 

 able to examine for the enlightenment of future workers in the gi'oup. 



For another group of beetles somewhat resembling Romanita 

 amazonica but differing in the head and antennal characters, I have 

 erected the genus Porechontes because of the large pore in the middle 

 of the front of the head in the male. It resembles Romanita amazonica 

 in having the third antennal joint very short, but the apical joints 

 tend to be widened triangularly in the male. The species that I 

 tentatively described as P^atymorpha albiventris in my earlier paper 

 belongs here. Two other species have come to my attention, all three 

 having a similar pore in the middle of the front of the head. 



Among other Galerucine beetles having the middle tibiae excised in 

 the male are two very different groups, both with bifid claws instead 



