104 ENTOMOLOGICAL SOCIETY 
production of these two forms follows Mendel's Law and also 
to ascertain which form constitutes the dominant type in the 
species. As all the males are ostensibly yellow, the problem 
is a difficult one, since, if this law holds with this species, 
some of the yellow males must be potentially black and 
produce offspring in which the black type prevails. 
Mr. Cook said he did not believe that dimorphism in nature 
follows the working of any law. The matter was further 
discussed by the members present. 
MARCH 2, 1905. 
The 1 94th regular meeting was held at the residence of 
Messrs. A. L- Quaintance and W. M. Scott, 1809 24th St., 
N.W., President Banks in the chair and Mersrs. Ashmead, 
Burke, Gill, Girault, Hinds, Hopkins, Howard, Pratt, Quain- 
ta;ice, Scott, and Webb, members, and Messrs. Davis, John- 
son, Strauss, and McClendon, visitors, present. In the absence 
of the secretary Mr. Pratt was appointed secretary pro tern. 
Prof. Thomas B. Symons, Entomologist of the Maryland 
Agric. College Exp. Station was elected an active member. 
The acting secretary read a letter from Prof. J. B. Smith rela- 
tive to a National Association of Entomologists; this was 
discussed by Messrs. Ashmead, Banks, Gill, Hopkins and 
Quaintance. The matter was referred to the following com- 
mittee appointed by the President at the request of the Society, 
Messrs. Ashmead, Titus and Quaintance. 
Mr. Webb exhibited specimens of two species of Desmocerus 
and presented the following paper: 
DESCRIPTION OF A NEW SPECIES OF DESMOCERUS WITH 
A SYNOPTIC TABLE OF THE GENUS. 
~: BY J. L. WEBB. 
Desmocerus piperi n. sp. 
9 Length 20.5 mm. Head, pro thorax, ventral surface, 
legs, and antennae bluish black; elytra bluish green, with 
narrow orange margins. Body elongate; *-head scarcely as 
long as pro thorax, narrowed towards base ; pro thorax narrower 
than elytra, and strongly narrowed towards head, with an 
