OF WASHINGTON. 347 



JANUARY 12, 1899. 



The i/j-Oth regular meeting was held at the residence of Dr. L. 

 O. Howard, 1336 3oth street. Vice-President Gill in the chair 

 and Messrs. Motter, Sanderson, Dyar, Ashmeacl, Judd, Caudell, 

 Pollard, Schwarz, Marlatt, Heidemann, and Howard also pres 

 ent. Mr. E. L. Morris was elected an active member of the So 

 ciety, and Dr. H. G. Dyar was nominated as Vice-President of 

 the Washington Academy of Sciences for the Entomological 

 Society. 



Under the head of Exhibition of specimens Mr. Schwarz 

 showed a true queen of an undescribed species of Termes which 

 had been found by Mr. H. G. Hubbarcl in Madera Canyon of 

 the Santa Rita Mountains, Arizona, in June, 1898. This is the 

 first true Termite queen which has been found in North America. 



Mr. Heidemann exhibited a species of the genus Hoplinus 

 found by Mr. Schwarz in southern Arizona (Santa Catalina 

 Mountains). This is a curious species thickly covered with 

 spines, on account of which Mr. Ashmead suggested that as the 

 vegetation of that region is spiny, the presence of this armatured 

 bug indicated a case of protective resemblance. A long discus 

 sion ensued on the subject of mimicry and protective resemblance 

 among insects, participated in by Messrs. Gill, Ashmead, Judd 

 and Howard, Dr. Gill objecting to the use of the term " mimicry " 

 on the ground that it apparently implies volition on the part of 

 the species. 



Dr. Dyar presented some notes on the phylogeny of the Lasi- 

 ocampidas. Apropos to Mr. Tutt's recent article on the subject 

 he had gone over the group and established a genealogical tree 

 based principally upon the larval characters and the wing vena 

 tion. The discussion of this paper took the form of a continua 

 tion of the subject of protective resemblance suggested by Dr. 

 Dyar's remarks about the larvaB of this group of Lepidoptera, es 

 pecially in relation to the sub-lateral structures developed as a 

 means of eliminating the shadow cast by the caterpillars, consisting 

 in one group of larvae of a longitudinal white line and in others 

 of lateral processes. Further discussion by Messrs. Gill, Ash 

 mead, and Dyar considered the larval characters in the Lepi- 



