368 Mr. J. J. Walker's notes on Lepidoptera 



I now proceed to enumerate the Lepidoptera met 

 with : — 



Papilio j^odalirius, L. — I have ne^er seen this 

 insect in the vicinity of Gibraltar, but at Malaga, on 

 May 1st, 1888, I took a very fine female specimen 

 of the var. FeistJiameli, Dup. The var. Latteri, 

 Aust., appears to be not uncommon on the African 

 side of the Straits : I have met with it at Esmir in 

 July, and at Benziis Bay and Tangier in August and 

 September. 



P. machaon, L. — Very common everywhere on both 

 sides of the Straits ; I have taken freshly-emerged 

 specimens on the Kock of Gibraltar from February 18th 

 to the end of October. The larva is, so far as I have 

 observed, as frequently found on rue (Riita angustifolia, 

 Pers.) as on fennel and other Umhelliferce. 



Thais rumina, L. — This beautiful butterfly is one of 

 the most characteristic species of the Kock, where it 

 abounds in early spring ; it is found throughout the 

 district, being common close to the town of Malaga, and 

 abundant at Tangier. A favourite haunt for the species 

 at Gibraltar is the bush-covered slope at the back of the 

 "Alameda," or public garden, where, in May and June, 

 the curious larvae may be found commonly on Aristolochia 

 glauca, Desf. The earliest date on which I have observed 

 the imago on the wing at Gibraltar is February 8th, and 

 it lasts in good condition until the end of April. The 

 ab. Canteneri, Hey., was seen only on April 13th, 1887, 

 on the summit of Peregil Island, a curious little flat- 

 topped limestone rock of about two acres in extent and 

 250 ft. in elevation, lying about a quarter of a mile from 

 the African shore, almost exactly opposite the Kock of 

 Gibraltar. 



Pieris hrassiccs, L. — Common everywhere throughout 

 the year. As a rule the specimens are rather smaller 

 than those met with in England, the apex of the 

 primaries is less densely black, and the under side of 

 the secondaries much more dusky in tone, through being 

 more thickly sprinkled with black scales. The larva is 

 very common on Tropaolum, as well as on Cruciferce, at 

 Gibraltar. 



Pieris rapa, L. — As common as the preceding, and 

 also on the wing all the year round. Somewhat smaller 

 on the average than British examples, but not otherwise 



