308 CALIFORNIA ACADEMY OF SCIENCES [Pkoc. 4th Ser. 



Hawk-moth. Also reported by Holland, and Rothschild and 

 Jordan, from the Galapagos Islands. 



There are several larvse and one pupa of lineata, from the 

 Galapagos, preserved in spirits. 



Galapagos — Alar expanse. $ 51,^ 67 mm.=:59 mm. 



9 62, 67,' 78' mm.=69 mm. 



California, U. S. — Alar expanse. $ 77, 78, 79, 88 mm.= 

 80.5 mm. 



9 90, 96, 98, 101 mm.=96.2 mm. 



3. Theretra tersa Linnaeus, Mant. Plant., H, 538, 1771. 

 This handsome insect appears to be still rare in the islands, 



the only specimen secured being reared from a larva discovered 

 by lamplight, feeding upon the leaves of Clerodendron molle, 

 Chatham Island, February 23, 1906. 



The larva of tersa, which is of the "Hog" caterpillar type, 

 has several times been described, while the pupa corresponds 

 well to Hy. Edwards' description of it in Entomologica Ameri- 

 cana, III, 164, 1887. The pupa was formed in a shallow 

 depression in the soil, and sheltered by a leaf or two. 



This sphinx may be a recent arrival to the Galapagos Archi- 

 pelago, judging from its rarity there, and from the fact that it 

 was taken only from the most windward (except Hood Island) 

 island of the group, viz., Chatham. It does not differ from 

 continental specimens, which are quite common in the Tropics. 



One Male — Wreck Bay, Chatham Island, altitude 500 feet, 

 February 23, 1906. 



Alar expanse, 66 mm. 



4. Dilophonota ello Linnaeus, Syst. Nat., 491, 1758. 



This species was found quite plentifully on Charles, Chat- 

 ham, and Albemarle Islands. 



Imagines were taken at flowers on the three above-named 

 islands, during the rainy season. The first larva taken, was 

 found at the base of a Guava tree (Psidium) , on Chatham 

 Island, January, 1906. It pupated a short time after its cap- 

 ture. Small specimens of the larvse were observed at South 

 Albemarle, in early March, 1906, and in numbers at Iguana 

 Cove, a few days later. The food plant of ello is Hippomane 



^ Ex larva. 



