5o6 CALIFORNIA ACADEMY OF SCIENCES. 



on sides of thorax yellow, a little wider. Abdomen shaped 

 as in ^ , a blue apical spot on each side of 2 instead of 

 the apical half; base of 3-6 with the transverse band, on 

 7-8 represented by a small basal spot each side. Ster- 

 num of I with a similar and equally well developed tu- 

 bercle with the apex spinous. No teeth on 10. Apical 

 part of the appendages broken off. Genital valvules 

 reaching only to apex of 9. Apical margin of 10 with 

 many small denticles. 



S ? Wings clear. Costa yellowish to somewhat be- 

 yond the nodus, other veins mostly brown. Pterostigma 

 dark brown ( ,^ ) or paler ( ? ), surmounting 2^-3 cells. 

 Membranule white, apical third cinereous. 2 supra-tri- 

 angulars (i in left hind wing of ? ), at most three rows of 

 cells between subnodal sector and supplementary sector 

 next below; discoidal triangle 4-celled (3 in one wing 

 15,5 in one wing i 3 ), two on the inner (basal) side. 

 Front wings with 11-15 antecubitals, ist and 5th (6th in 

 I S ) thicker, 8-11 postcubitals, internal triangle free 

 (with one cross-vein in i 6 ), 3 (4 in one wing 16) other 

 median cross-veins. Hind wings with anal triangle of $ 

 3-celled, internal triangle 2-celled (free in i 5 , i wing of 

 $),2 (3 in 16, one wing of? ) other median cross- 

 veins, 8-12 antecubitals, ist and 5th (7th in 1 S , 6th in 

 one wing 1 S ) thicker, 8-12 postcubitals. 



Total length .5 57-61, $57? Abdomen 6 42.5-46, $42? 

 Front wing S 35-37^ ? 39- Hind wing 5 34-3^, S 39- P^er. 

 3-3.5. Sup. app.,5 4-5-5- App. ? 4? 



Distribiitiou. California and Utah (as above), British 

 Columbia (Hagen). 



^^. californica resembles in many respects ^^. dijfjins 

 Rambur from the west coast of South America, but the 

 latter may be distinguished by its inferior appendage a 

 liitle more than half as long as the superiors, these hav- 



