THE CANADIAN ENTOMOLOGIST. 11 



Cuterebra tenebrosa, n. sp. — ,$ . Differs from lepivora as follows : 

 Front at narrowest point five times as wide as the distance between the 

 two posterior ocelli ; two spots of brownish pollen on each side of lower 

 part of the front next the eyes, and two on the sides of the face, but one 

 or more of them sometimes wanting ; hairs of the head and thorax wholly 

 black. Abdomen wholly polished and destitute of pollen. Tibiae white 

 pollinose at the base of the outer side. 



$ . Same as the male, except that the front is seven times as broad 

 as the distance between the two posterior ocelli. 



Length of male, 20 mm.; of the female, 20 to 22 mm. Colorado, San 

 Jose (Mrs. A. E. Bush), and Siskiyon Co. (James Behrens), Cal.; and 

 Perry, Oregon. Eight males and three females. 



All of the specimens upon which these descriptions are founded are 

 now the property of the National Museum. 



FURTHER OBSERVATIONS ON PAPILIO BAIRDII, Edw. 



BY VV. H. EDWARDS, COALBURGH, WEST VA. 



On the 8th of June, 1897, I received from Mr. David Bruce, at 

 Glenwood Springs, Colorado, about 30 eggs, laid by a typical female of P. 

 Bairdii, confined over the food plant, Artemisia dracunculoides. These 

 soon began to hatch, and I gave them fennel, on which they thrived. 



The first moult was passed on 13th and next days, the second moult 

 on 15th and next days. Two passed the third moult on 17th, and the 

 fourth on 19th and 20th. By 22nd all were past fourth moult. The first 

 pupa formed 24th, and by 25th, a. m., there were half a dozen pupje. The 

 last larva pupated on 28th, and I had in all 16 pupae. 



The first imago came out 4th July, the last July 9th, and one pupa 

 will go over to 1898 or 9. 



The outcome was as follows : 



1 typical Oregonia $ . 



In ., $ • 



2 typical Briicei (5, the cells of fore wings black instead of yellow, 

 and the other characteristic marks of Brucei as set forth in my paper in 

 Can. Ent.; also in vol. 3, Butt. N. A. 



7 typical Bairdii ^ . 



I ri n 9 • 



Three pupae dead. 



Thus all three forms came from eggs of the single form Bairdii ? . 



