298 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



But little of the early stages were noted. Oct. 15, 1905, 

 a 2 was observed ovipositing on the legume Cassia picta, and 

 several half-grown larvae were found feeding on the same plant 

 in the "Green Zone," of South Albemarle, in early September, 

 1906. Occurs on Charles, Chatham, Indefatigable, Albemarle, 

 James, Narborough, Abingdon Islands, and probably on 

 Hood, Duncan, Bindloe, Jervis, and Barrington Islands. 



Taken also on the Albatross Expeditions in 1888 and 1891 

 (where it is referred to by Agassiz as Colias^), Hopkins- 

 Stanford Expedition, and perhaps also on some of the earlier 

 expeditions. 



Alar expanse: S 44, 44, 51, 56, 56, 56, 56, 58, 60, 62, 64, 

 64, 64, 64, 65, 66, 66, 67, 67, 70, 72 mm.=:60.6 mm. 



? 38, 60, 61, 63, 70 mm.=58.4 mm. 



26 specimens. 



NYMPHALIDAE 



2. Agraulis vanillae Linn., Syst. Nat., 482, 1758, var. Gala- 

 pagensis, Holland., Proc, U. S. Nat. Mus. XII, 194-5, 1889. 



Holland's description reads : "The form of A. vanillcB in 

 the collection ticketed 'Chatham Island' differs in some 

 respects so decidedly from the typical form ^s to well deserve 

 a varietal name. It is characterized by its smaller size, by the 

 darker and more fuscous tint of the basal half of the wings, 

 by the great increase in breadth of all the black markings on 

 both surfaces, and the almost entire obliteration of the white 

 dots by which the spots in the cell on the upper surface of the 

 primaries are pupiled in typical specimens. One specimen, 

 Galapagos, Chatham Islands." 



It is therefore quite a different appearing insect from typ- 

 ical A. vanillce and might rightly be raised to specific rank. 

 In Galapagensis, the less sinuate outer margin of the primaries 

 (probably resulting from the dwarfing of the insect), gives 

 the latter a much blunter aspect than those of our A. vanillcu. 

 From Holland's description of the species, I judge the type to 

 be a male. The female varies somewhat in color, for it may 

 be as in typical vanillcB, darker with heavier black markings 



^Bull Mu";. Comp. Zool., XXIII, 68, 1892. 



