XXXII BIOLOGICAL SOCIETY OF WASHINGTON. 



Mr. Wm. H. Dall made some remarks on CLUSTER FLIES,* ex 

 hibiting specimens of Musca rudis from Geneva, N. Y., where, for 

 thirty years or more, this fly has been regarded as a household pest 

 in the spring and fall, when it gathers in swarms in the corners of 

 apartments in country houses. 



THIRTY-THIRD MEETING, October 27, 1882. 



The President occupied the chair. Thirty-eight members were 

 present. 



The President announced the presentation to the Society by Dr. 

 John J. Mason of his work entitled MINUTE STRUCTURE OF THE 

 CENTRAL NERVOUS SYSTEM OF CERTAIN REPTILES AND BATRACHIANS 

 OF AMERICA. 



Mr. Goode, on behalf of the Council, announced his intention 

 of proposing at the second meeting from date, the following amend 

 ment to the Constitution : 



Section X to be amended so as to read, " Members in arrears for one year 

 shall, after due notification by the Treasurer, be dropped from the rolls, except 

 in the case of those absent from the city for one year or more, who may be re 

 tained on the list as non-resident members during their absence." f 



A committee, consisting of Messrs. Goode, Gill, Mason, Ward, 

 True, and Rathbun, was appointed to arrange for courses of lectures, 

 similar to the Saturday lectures of the previous season. 



Mr. Wm. H. Dall made a few remarks in extension of his paper 

 on the "Cluster Fly," presented at the previous meeting, and read 

 a letter from Professor C. V. Riley in relation to its name and geo 

 graphical distribution.* 



Dr. W. S. Barnard made a communication upon the subject of 

 ECTOPARASITIC TREMATODES, describing two species believed to be 

 new, for which, however, no names were proposed. 



Mr. W. P. Conant made some remarks upon Two CASES OF 

 SNAKE BITE IN MASSACHUSETTS, relating instances in which the 

 bites of unknown species of snakes had been attended by very 

 serious results. 



* 1883. DALL, W. H. Note on Cluster Flies. <Proceedings U. S. National 

 Museum, V, pp. 635-7, 1883. Includes a letter from C. V. Riley. 

 f This amendment was adopted at the meeting of February 2, 1883. 



