June, I9I2.J Davis-Lexg: Insects on a Felled Tree. 119 



insects. Segments II to IV of the maggot (Hewitt) would represent 

 the three thoracic segments, or segments VIII to X of ancestral 

 insects; and segments V to XIII of the maggot (Hewitt) would 

 represent the ten primitive abdominal segments, or segments XI to 

 XX of ancestral insects, the anal or thirteenth maggot-segment being 

 almost certainly double and representing the last two primitive body- 

 segments. This interpretation is set forth in detail in Contr. Th. 

 Knowl. Muse. Flies, with tentative homologies of the ordinate 

 cephalopharyngeal sclerites. 



The fact that thirteen distinct segments can be distinguished in the 

 first-stage maggot of Phasiopteryx, of which the cephalopharyngeal 

 skeleton occupies the first four, implies that here segments II and III 

 of Hewitt are not coalesced as in Musca and most other types. 



INSECTS ON A RECENTLY FELLED TREE. 



By William T. Davis and C. W. Leng, 

 New Brighton, N. Y. 



On November 14, 191 1, we found at Cleveland, near Punta Gorda, 

 Florida, a large pine tree cut down and lying nearly horizontal, sup- 

 ported only by such of its branches as had not been broken or 

 hacked off. The tree was a long leaf pine (Pimis palustris) and, as 

 we subsequently learned, it had been felled a week previous to our 

 finding it We beat the branches and the trunk over our umbrellas, 

 scraped the bark oft' in places, pounded the piles of cut branches, 

 lifting each free from the pile for the purpose, and obtained many 

 insects, principally Coleoptera, in that way, or as they ran away 

 over the ground on being disturbed by us ; others were found in the 

 chips about the stump of the tree. The larger and more brilliant 

 species, Acanthocinus, Monohammus, Temnockila, Chrysohothris, etc., 

 were easily seen on the trunk and branches, the smaller species were 

 dislodged by our beating sticks, until, after two hours work, a total of 

 42 species of Coleoptera and 13 species of insects of other orders 

 had been bottled. Over 300 specimens of Coleoptera alone were taken 

 and as many specimens of the more abundant species were allowed to 



