100 PROCEEDINGS OF THE ACADEMY OF 



this case occupied by a cavity three-quarters of au iuch across. 

 There were no petals; but in place five gland or rather bud-scale- 

 like processes, at regular distances, on the edge of the green 

 fibrous outline before referred to. The outer whorl, which usually 

 forms tlie cal\-x, was almost ascpalous, as a mere scarious mem- 

 brane marked the place Avhere the calyx segments or sepals 

 should have appeared. It was so eas}^ in this specimen to trace 

 the diA'iding line between the outer or calycine whorl and the 

 inner or corolline whorl, which uniting and becoming succulent 

 formed the popular apple fruit, that it was worthy' of note iu this 

 connection. 



13 ut the most interesting feature in this specimen was what were 

 probably, from their similarity in appearance, cork cells, formed 

 abundantly on the outside of the apple. It would seem, that, with 

 the lack of development in the inner series of whorls necessary 

 to the perfect fruit, those which remained were liable to take on 

 somewhat the character of bark structure. 



Dr. Leconte mentioned that he had published in the Proceed- 

 ings for December, 1866, a paper entitled " List of Coleoptera col- 

 lected near Fort Whipple, Arizona, b}' Dr. Elliott Cones, U. S. A., 

 in 1864-65." He had recently received a letter from Dr. Edward 

 Palmer, stating that tlie specimens had been collected mostl}' by 

 the latter, and in accordance with the desire of Dr. P. the fact was 

 now recorded. 



February 18. 



The President, Dr. Ruschenberger, in the chair. 



Twent^'-seven members present. 



The following paper was presented for publication : 

 "Description of Mexican Ichneumonidge, Part II." By E. T. 

 Cresson. 



Mr. Thomas Meeiian presented specimens of leaves of a Begonia 

 on which minute folioles appeared as denseh' as hair all over the 

 upper surface, while the leaf was on tlie growing plant. Tiie 

 little growtlis first aitpoared as succulent hairs, and tliese hair-like 

 processes subsequently divided or produced the leafy blades from 

 their apices. 



Mr. M. remarked that hairs were at any rate structurally but 

 graded thorns, of whicli bristles were an intermediate stage. 

 Spines often bore leaves, l)ut it was unusual for thorns to do so. 

 It might not be that these leaf-bearing jirocesses were really hairs 

 though they had that appearance. 



He further observed tliat last j-ear he called the attention of 

 the Academy to the fact that in some Scrophulariaceous plants, 



