GALERUCINE BEETLES — BLAKE ' i 77 



resemblance to N. variabilis. They are differently shaped, being 

 oblong instead of widened at the apical end. They have longer heads 

 and smaller eyes. The sex character of the excised middle tibiae in the 

 male, found in them, is not found in variabilis. In short, they fit 

 better into the group with notched middle tibiae than into that mis- 

 cellany of species called Neobrolica, although there is no antennal 

 difference between the sexes. Besides sexplagiata are other species, 

 one of which has been also described under Neobrolica, N. ruaianae 

 Jacoby from Honduras. There is another undescribed species from 

 Mexico closely related to ruaianae. In both of these the middle 

 tibiae of the male are notched and the antennae not enlarged in the 

 male. But they differ from sexplagiata in the length of the 3d antennal 

 joint, which is short and subequal to the 2d, whereas in sexplagiata it 

 is long. In this regard these two form a connecting link with the 

 genus Luperosoma. Besides these is another undescribed species from 

 South America that is more closely related to sexplagiata. All of these 

 species are a little different from the other groups having for the male 

 character the notched middle tibiae in that they do not have any 

 enlarged or otherwise deformed antennal joints in the male; conse- 

 quently, the genus Iceloceras, is here erected for them. 



The name is from the Greek "ikelos," like, and "keras," horn. 



Key to species of Iceloceras 



1. Third antennal joint short 2 



Third antennal joint fully twice as long as second 3 



2. Elytra with a wide dark sutural marking curving down and widening to cover 



apex of elytra except margin ruatanae (Jacoby) 



Elytra with only apical third dark flavocyaneum, new species 



3. Elytra vittate 4 



Elytra not vittate 5 



4. Elytra with a sutural and a lateral vitta, not joined at apex. 



vittatum, new species 

 Elytra with a wide median dark vitta nymphaea (Jacoby) 



5. Elytra piceous with a single pale spot in the middle of each elytron. 



biplagiatum, new species 

 Elytra piceous with three pale spots on each, sometimes confluent .... 6 



6. Legs entirely pale 7 



Tibiae, tarsi and usually femora at apex dark 9 



7. Orange-brown with dark brown or piceous markings. South America. 



maximum, new species 

 Pale yellow with piceous markings 8 



8. Pronotum nearly impunctate, a dark spot on either side not extending below 



middle. Costa Rica verbesinae, new species 



Pronotum distinctly and rather densely punctate, the dark spot on either 

 side extending nearly entire length. Panama . . . flavipes, new species 



9. Femora entirely pale, tibiae and tarsi dark, the large dark spot on each side 



of pronotum extending nearly to middle. Panama. 



latiplagiatum, new species 

 Femora with a dark streak at apex, tibiae and tarsi dark 10 



