— io8— 



ally — but it is difficult to do so and get good fruit. It is always more or 

 less imperfect. Pronuba always succeeds. It makes two or ihicc punct- 

 ures, and gets all around the tube, bringing the pollen into contact with 

 every part of it. There are from 4 — 500 Yuccas in the Dep't Grounds 

 where he passes daily, and duiing the entire sca^-on l;c (ound but a si'liiaiy 

 bee on two successive mornings ami none of the others in the Dcp'i ob- 

 served any. This bee was not inside, but tried to get at the nectar from 

 the outside of the flower. 



a\Ir. Bassett asked wheiher this is ever repeated — whether a flower is 

 visited by more than one moth. Prof. Riley thought not — but it may be. 

 He has no direct evidence on that point. 



He also spoke of a new species o{ Lecauium fouutl on the Austiian 

 pine, in Wisconsin, of which the males were numerous. The moles of 

 this species have been heretofore found very rarel\' and o)l many they arc 

 entirely unknown. In France the (^ (;f Lecaniinn hesperidiiui has been 

 found in the body of the Q which it ne\er leaves. It is a vtr} much de- 

 graded form. 



Prof. Riley quoted IMoniez's observations on this species as given in 

 the Ent. INIo. Mag. for July 1SS7, showing the (.Icvjlopment (.jf the (^ 

 and the bearing of the discovery on the qucsiion of parthtnogentsis. He 

 remarked upon the fact that discoveries aie often made in wiilely difterent 

 localities by observers, of the same facts, instancing several cases where 

 at about the same time males of this genus have been discoxered. j\Ir. 

 Koebele has in California reareti the males of two different species having 

 wings and other distinctively male characters. 



He also said that he finds Crioa:n's asparagi c\\.cx\i^\\\^ South — it has 

 been found at Falls Church, Fairfax Co., Va. 



The present year there has been a most remarkable swarming of 

 Apatura cellis in the Southern States. These migrations generally take 

 place in the Fall, but this was in the Spring. The only way of accounting 

 for it is that the conditions where unusualh- favorable for their hiberna- 

 nation and development. 



Prof. Cook said thev have manv I'litca filaniciilosa and he has found 

 bees on them vcr}" abundantly. So far as he knows they have not the 

 Pronuba in Michigan. 



He had not noticed particularlv what part of the flowers the bees 

 visited. 



Prof. Rilc\' .said that in Colorado on a species of JT/av? he discovered 

 a most remarkable species o[ Pronuba, flat-bodieil with dusky wings, look- 

 ing almost like a cross between a saw-fly and a Phryganid. 



(TO BE CONTINUED.) 



