MARYLAND GEOLOGICAL SURVEY 237 



species of Bumelia, especially II. lanuginosa Pers. and B. monlicola 

 Buckl., from either of which could be selected specimens which would 

 match them exactly in outline, but the absence of definite nervation 

 renders accurate comparison impossible. 



Occurrence. — Sunderland Formation. Near the headwaters of Is- 

 land Creek, Calvert County. 



Collections. — Maryland Geological Survey. 



UNDETERMINED. 



In addition to the genera and species determined and described there 

 remain about a dozen species of small seeds which could not be identified 

 except as belonging in certain families or orders and hence have not been 

 included. Among these were quantities of a peculiar moniliform object 

 which at first were mistaken for seeds and then for small fungoid growths- 

 Careful examination showed that they could not be referred to either of 

 these and their close resemblance to galls suggested that they might be 

 of insect origin, similar to such as are found on the leaves of the living 

 Bald Cypress (Taxodium dislichum (L.) L. C. Bich). Specimens were 

 sent to Dr. L. 0. Howard, of the Division of Entomology, IT. S. Dept. 

 Agriculture, who kindly examined them and from whose report the fol- 

 lowing is quoted : " The little swellings on the leaf of the Bald Cypress 

 appear to be the work of one of the gall gnats, a Cecidomyiid. Those 

 from the Pleistocene swamp deposits of Maryland appear to be the 

 same. . . . The material was badly crushed when received. Still I do 

 not know that any more accurate determination could be made of the ma- 

 terial in its best condition." 



