Vol. I] WILLIAMS— BUTTERFLIES AND HAWK-MOTHS 317 



basally and frequently broken. The stigmata, bordered by 

 dark brown, are contained in the base of the oblique stripes. A 

 number of larval varieties are described by J. A. Lintner (Proc. 

 Ent. Soc. Phil., Vol. Ill, pp. 650-651, 1864). 



These monstrous caterpillars occurred in great numbers on 

 Chatham Island, in February, 1906, when the roadside in the 

 vicinity of Wreck Bay was swarming with them. They were 

 also plentiful at Iguana Cove, Albemarle Island, in March. 



The pupa, as is well known, is remarkable for its very long 

 recurved tongue-case. 



The moths do not differ from those of the mainland, but a 

 few of the bred specimens, perhaps owing to under-feeding, 

 are quite small and lack much of the usual rosy tinge. 



P. cingulata is usually considered distinct from convolvuli of 

 the Old World, but like it enjoys a wide range, being very 

 common in the American tropics and occurring also in the 

 Hawaiian Islands. A specimen of this insect was taken by 

 Mr. S. J. Hunter of the Expedition on Cocos Island, Septem- 

 ber, 1905. 



Specimens were found on Chatham, Albemarle, and Inde- 

 fatigable Islands, and it doubtless occurs on most of the other 

 islands of the group. 



Taken also on the Albatross Expedition in 1889, the Hop- 

 kins-Stanford Expedition (the specimens being in Stanford 

 University) ; and also by Mr. Beck in 1901. 



There are ten $ $ and thirteen 2 ? from these islands, in 

 the collection of the California Academy of Sciences. 



Alar expanse: S 81, 81, 82, 82, 84, 86, 88, 88, 94, 97= 

 86.3 mm. 



? 77, 78, 82, 87, 87, 92, 93, 93, 97, 103, 103, 105, 112= 

 92.2 mm. 



One 9 specimen from Cocos Island=114 mm. 



