430 SNODGRASS 



cases. The antennas are generally pale basally but otherwise dusky. 

 The black spots of the femora are in some cases indistinct and not con- 

 nected by a lateral black band. The black punctations of the lower 

 outer carina of the femur and of the side of the tibia are persistent. 

 In most cases the large black spots of the femur are well marked and 

 in some cases have their lower outer ends connected by a very wide, 

 distinct lateral black band leaving only a narrow stripe of yellow below 

 it. Also, the specimens show a tendency in the species, toward the 

 formation of a fourth black spot just back of the trochanter of the hind 

 leg. This spot is united with the lateral external black band of the 

 femur, as are the other spots, when this band is well developed. 

 The maculation of the tegmina varies considerably, the spots being in 

 some cases indistinct and in others very black, especially basally, 

 where they are also sometimes considerably fused ; but in general the 

 markings are very prominent. The posterior wings are uniformly pale. 



Length of tegmina of male, 33, 30, 31, 37, 33, 33, 31, 33, 32, 30, 

 31^ 31^ 33^ 3^^ 32, 31,30 = 31.8 mm.; oifefnale, 40, 40, 41, 39, 39, 

 385 38, 36, 35^ 39. 35. 3S, 35. 35. 37. 38. 3^ = 37-6 mm. 



Length of prozona : 7, 6.5, 7, 6.^, 7.5, 7, 7, 7, 7, 6.5 = 6.9 half mm. 



Length of metazona : 8, 8, 9, 9, 10, 9.5, 9, 9, 8, 8 = 8. 75 half mm. 



Prozona : metazona = .79. 



Though the literosa forms closely resemble one another as the pre- 

 ceding descriptions show, yet each possesses several distinguishing 

 characters. 6". /. punctata of Hood is distinctly larger than the varie- 

 ties on Chatham and Tower Islands w^hich are of about the same size. 

 The length of the metazona, measured along the mid-dorsal line, com- 

 pared with the length of the prozona, is much greater in the Hood 

 Island race than in the Chatham Island race, while those on Tower 

 are intermediate between the others in this respect. The space between 

 the eyes as compared with the least width of the frontal costa, is cer- 

 tainly, as pointed out by Scudder, narrowest in the Chatham Island 

 specimens and widest in the Tower Island specimens, being in the 

 former much narrower than the narrowest part of the frontal costa, and 

 in the latter varying from the width of the frontal costa to very slightly 

 narrower. The Hood specimens all have the space between the eyes 

 on the vertex narrower than the least width of the frontal costa, but 

 the difference in this respect between them and the Tower specimens 

 is scarcely perceptible. The specimens do not show the differences in 

 the punctation of the frontal costa above the ocellus, nor of the meta- 

 zona, mentioned by Scudder. The lateral black stripes on the lateral 

 lobes of the prozona average a little darker on the Chatham specimens 



