1915] The Ottawa Naturalist. 143 



At the close, Professor Prince proposed a vote of thansk 

 appreciatory of the treat Dr. Hjort's lecture afforded, and he 

 expressed the hope that Dr. Hjort would be able to continue his 

 work in Canada for another year. Dr. C. Gordon Hewitt 

 seconded the motion and pointed out that an illimitable market 

 for fish food would arise as a consequence of the present war, 

 and Canada should prepare to supply the vast demand that 

 wotild arise. Professor Macallum, of Toronto, added a few 

 words of commendation, and the President (Mr. Arthur Gibson), 

 in putting the motion added his own appreciation of Dr. Hjort's 

 valuable address. The stereopticoh, it may be added, was 

 skilfully operated bv Mr. J. S. Harterre. 



E. E. P. 



NOTES ON THE PREPARATORY STAGES OF 

 PROSERPINUS FLAVOFASCIATA ULALUME STRH.* 



By Arthur Gibson. 



In 1905, eggs of this sphingid moth were received from Mr. 

 J. W. Cockle, of Kaslo, B.C. Oviposition took place at Kaslo, 

 on May 30, and the eggs hatched at Ottawa, on June 12. In 

 1904, Dr. Dyar publishedf descriptions of the egg and the five 

 larval stages. My notes agree on the whole with such de- 

 scriptions, but as further information is given on certain points, 

 it seems excusable to present them in their entirety. They are 

 as follows: 



Egg. — Elliptical in shape, size 1.2 mm. by 1 mm. by 1 mm. ; 

 pale green, shining, smooth; length of egg state as above in- 

 dicated 12 days. In 1910, a female of tilalume was received from 

 Agassiz, B.C. Dtiring the journey to Ottawa, seven eggs were 

 laid. These hatched on May 2 5, but unfortunately the larvse 

 died soon afterwards. 



Stage I. — Length at first 4 mm. Head pale greenish, man- 

 dibles brownish. Body pale greenish, cylindrical, plump; seg- 

 ments of body wrinkled (8 wrinkles) ; no markings on body. 

 Caudal horn 0.5 mm. long, pale at base, darkened towards and 

 at tip. Feet concolorous with body. 



Most of the specimens moulted on June 16 and 1 7. 



Stage II. — Length 8 mm. Head slightly bilobed, with a 

 yellowish tinge; ocelli black. Whole body washed with white, 

 giving the larva a glaucous-green appearance. Dorsal vessel 

 showing down the centre of the dorsum as a narrow dark line, 

 from the head to the base of the horn. Subdorsal stripe white, 



♦Contribution from the Entomological Branch, Department of 

 As;riculture, Ottawa. 



fProc. U.S.N.M., XXVIL 790. 



