156 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 4 J 



beneath; spot below tubercules, tliird, fourth, and fifth antennal joints 

 beneath, spot on dorsal apices of femora, tibiae exteriorly, and a spot 

 on apical dorsal segment yellow; wings hyaline, radial and cubital 

 cells strongly dusky; venation dark brown. 



Port Angeles, Washington. One male bred from a pupa collected 

 in an old mine of Cerambycid in the dead wood of living Douglas 

 spruce. May 15, 1899, by A. D. Hopkins. Recorded under Bureau 

 of Entomology number "Hopk. U. S. 141." 



Type.—C&t. No. 14667, U.S.N.M. 



This insect was probably killed before pigmentation was complete. 

 It belongs to the group occidentalis and no doubt would have the 

 abdomen mostly red. Can this account for the amount of red on the 

 abdomen observed by Harrington ? It appears some of his specimens 

 were dug from their holes. 



SYNOPSIS OF NEARCTIC SPECIES OP ORY8SUS. 



The following synopsis includes only those species and sexes 

 known to the writer. 



Females 1. 



Males 8. 



1. Second antennal joint distinctly more than half as long as the third; a distinct 



carina behind the eyes; thorax ferruginous; length 5 mm thoracicus. 



Second antennal joint half or less than half as long as the third; no distinct carina 

 behind the eyes although there may be an indistinct raised area; thorax black; 

 10 mm. or over 2. 



2. Seventh and eighth antennal joints subequal; second antennal joint half as long 



as the third; abdomen black or with only the three apical segments red 3. 



Seventh antennal joint distinctly longer than the eighth; second antenna! joint 

 less than half as long as the third ; abdomen red beyond the second segment . . 5. 



3. Clypeus crenulate laterally, a tooth in the median notch, apical margin narrowly 



depressed; venation strong; abdomen black modestus. 



Clypeus not crenulate laterally, a nan-ow median notch in which there is no tooth, 

 apical margin broadly depressed; venation weak; three apical abdominal 

 segments red 4. 



4. Hypopygidium sharply narrowing near the apex hxraorrohoidalis. 



Hypopygidium not sharply narrowing apically tenninalis. 



5. Anterior margin of the clypeus with a median notch 6. 



Anterior margin of the clypeus without a median notch 7. 



6. Mesoscutum with a smooth raised area which has a longitudinal groove; lateral 



ocelli on a line drawn between the third and fourth tubercules pint. 



Mesoscutum without a smooth raised area and groove; lateral ocelli opposite the 

 third tubercules relativus. 



7. Hypopygidium sharply narrowed apically and then produced so as to have an 



apical neck abietes. 



Hypopygidium without an apical neck occidentalis. 



8. Abdomen entu-ely black sayii. 



Abdomen in part red 9. 



9. Clypeus without a deep median notch; inner orbits with a complete yellow 



line abietes. 



Clj'peus with a deep median notch ; inner orbits with at most a pale spot 10. 



10. Anterior margin of the clypeus rounded anteriorly; head black relativusf 



Anterior margin of the clypeus straight; head with pale yellow spots — hopkinsi. 



