178 TttE CANADIAN ENTOMOLOGISl'. 



2. Facial carinae 2-4 and divergent anteriorly 3. 



Facial caringe 2 and convergent anteriorly. 



Submedian cell in hind wings shorter than the median, the transverse 

 median nervure joining the median vein before the origin of the 

 cubitus, the discoidal transverse nervure present; anterior tibi^ with 

 a deep emargination just before apex ; hind tibiae with the outer 

 edge serrate Chali?ius, Konow. 



3. Face bicarinate ; discoidal cell petiolate ; lanceolate cell widely 



contracted Ophrynopui, Konow. 



Face quadricarinate \ discoidal cell sessile ; lanceolate cell petio- 

 late Mocsarya, Konow. 



4. Front wings with the lanceolate cell longly contracted ; submedian cell 



in hind wings much longer than the median, the transverse median 

 nervure uniting with the median vein far beyond the origin of the 

 cubitus; transverse discoidal nervure always wanting. Oryssus, Latreille. 



Oryssus, Latreille. 



The following is apparently an undescribed species new to our fauna: 



Oryssiis tkoracicns,x\.SY>. — $. Length, 4.75 mm. Head, antennae 

 except the first five joints, the apical joint at apex, and the abdomen are 

 black, the thorax, first five joints of antennje with the apex of the last, and 

 the legs, red ; the anterior tibiee beneath are dusky with a white streak at 

 base ; the middle tibiae have a white streak behind ; while hind tibise are 

 blackish, with a white streak at basal half behind. The wings are sub- 

 fuscous, paler toward base. 



Hab. — Santa Cruz Mts., California. 



Described from a single specimen. 



Family IL — Siricid^. 



This family is also widely distributed throughout the world, although 

 represented by comparatively few genera. The family may be separated 

 into two subfamilies as follows : 



Table of Subfamilies. 



First transverse cubitus usually originating from the basal nervure ; hind 

 wings with a complete anal cell ; hind tibiae with two apical 

 spurs Subfamily L, Siricinae. 



First transverse cubitus not originating from the basal nervure, but from 

 the cubitus ; hind wings without a complete anal cell ; hind tibise 

 without or with only one apical spur Subfamily IL, Tremecinse. 



