No. 430.] FLOWERS AND INSECTS LN NEW MEXICO. 815 
distinctly Canadian Zone types. A fine bush of the last men- 
tioned grew on the north side of a huge rock, shaded from the 
sun. An Upper Austral representative is Ribes longifiorum 
(a variety, however, with the petals deep red, the calyx tube 
often reddish outside, the flowers about 14 mm. long, and the 
apex of the leaves obtuse, thus closely approaching the north- 
ern R. aureum, as restricted by Coville), while at its flowers we 
found the typically southern butterfly Epargyreus tityrus Fabr., 
which extends to South America and the West Indies. The 
bright yellow flowers of the Canadian Zone Thermopsis were 
visited by a female Megachile wootoni Ckll., a bee of a strictly 
alpine and boreal type. A magpie (Pica pica hudsonica) was 
also to be regarded as a boreal representative. The pink flowers 
of the Upper Austral and Transition Phlox nana were seen in 
the cafion a short distance below Trout Spring.! 
The insect visitors of one species of plant were rather care- 
fully studied by my wife and myself, May 24, 1902. 
dris missouriensis Nutt. Visited by bees, butterflies, and 
flies. The bees crawl in under the petaloid divisions of the 
style, and so doubtless effect cross fertilization. The butter- 
flies and flies (Bombyliide) suck from between the perianth 
segments, and appear to get their meal without paying for it. 
The following insects were observed : 
(1) Colias eurytheme Q, Lycena, Thanaos, — all butterflies, sucking. 
(2) Bombylius major L., with proboscis 8-8} mm. long, very abundant, 
sucking. In Europe a syrphid (Rhingia) with a proboscis 11 mm. 
long visits /ris pseudacorus, as is described by Müller. 
The remaining species are bees : 
(3) Megachile wootoni Ckll., Megachile latimanus Say. A male of each 
found sitting on the flowers, perhaps waiting for the females. 
(4) Synhalonia frater Cresson. One of each sex. 
(5) Anthophora bomboides neomexicana Ckll. One &. 
(6) Halictus coriaceus Smith. One 9. 
! Mr. Eldon Tuttle lately found in Las Vegas a flower of Phlox nana with the 
limb 8-parted, a character which, if not aberrational, would take it out of the 
Polemoniacez. I have since found a flower with the limb 7-parted. 
