THE GENUS PLSSODES. 37 



Length 5.5 to 8 mm.; black, elytra with or without faint anterior spots l)ut witli dis- 

 tinct transverse spots of white or yellow scales near vertex, and the punctures of 

 striae moderately coarse. Wisconsin to New Hampshire, in Pinus strobus. 

 Species index, (J 61- J G7 29. affinis Randall, page 64. 



Length 5.6 to 7.7 mm.; black, elytra with obscure anterior spots and small posterior 

 ones, the punctures of striaj coarse and deep. Kaslo, B. ('. Species index, $ 62, 



30. riirriri n. sp., page 65. 



SYNOPSIS OF PRIMARY SEXUAL CHARACTERS. 



Male Genitalia. 



Stem with apex uniformly rounded Division I 



Stem with apex 7iot uniformly rounded Division II 



DIVISION I. 



Section al. 



Fork slender Species 4, 5, 6 



Fork short Species 4 



Fork long Species 5 



Fork moderately stout Species 6 



Fork long and stout Species 7, 8 



Fork long and slender Species 9, 10, 11, 13 



Section a2. 



Stem narrowed toward apex, but not constricted Species 15 



Stem broad toward apex, slightly constricted anteriorly Species 16 



Section a}. 

 Fork long and slender Species 27, 28 



DIVISION II. 

 Fork very stout Specie.s 29, 30 



SYNOPSIS OF SECONDARY SEXUAL CHARACTERS. 



Beak longer and more slender in females than in males The Genus 



Hind tibia of male ivithout long fringe of hairs Division I 



Hind tibia of male with long fringe of hairs Division II 



DIVISION I. 



Beak in both sexes usually shorter than prothorax, rarely longer Su])division A 



Beak in both sexes rarely shorter than prothorax, commonly much longer. 



Subdivision B 

 Subdivision A. 



Apical margin of abdominal stemite 7 sinuate or not in males Section al 



Apical margin of abdominal stemite 7 not sinuate in males Section a2 



Section al. 



Apical margin of abdominal sternitc 7 not sinuate in males. 



Subsection bl, Species 1, 2, 3 



Apical margin of al)doniinal stemite 7 faintly sinuate in males Subsection b2 



57936°- 11 4 



