16 



form terminalis, which is said to be a variety of redculatum, could be found among 

 them. He saw none approaching this latter form — all were well-marked specimens of re- 

 ticulutwin. 



Dr. LeConte mentioned the curious fact that in some species of Galopteron the larval 

 skin was not shed when it pupated, but that the larva skin and pupa skin both remained 

 in situ until the perfect insect escaped. 



Dr. Morris then made some interesting remarks on the mouth parts of the wood- 

 peckers. 



Mr. Eiley exhibited specimens of blown larvae very nicely set up ; he thinks, how- 

 ever, that in this condition they are scarcely of value for scientific study, and for this pur- 

 pose prefers the specimens preserved in alcohol. 



Mr. Scudder differed from Mr. Riley, and thinks that the advantages ai'e in favour of 

 the blown specimens, and much prefers to study larvaj in this way. 



Dr. Hagen agreed with Mr. Scudder that blown larva? were advantageous for study. 



Dr. Morris asked if any of the gentlemen present who were in the habit of raising 

 larvfe, had made any observations in reference to the length of time the development of 

 the perfect insect may be retarded. He stated that three or four years since he had 

 placed a number of cocoons of S. ci/nthia on a shelf in his house, and that after lying 

 there all that time some of them had this year produced the perfect insect. 



Dr. Hagen referred to an instance related by Kirby & Spence where a beetle, Bupres- 

 iis splendida, was ascertained to have existed in the wood of a pine table more than twen- 

 ty years (7th edition, p. 121). 



Mr. Saunders mentioned the fact that the perfect insect of CEcanihus niveus frequently 

 came to sugar at night, when they were readily captured. He thought that where they 

 were very numerous this method of trapping them might be employed with advantage. 



Mr. Liutner observed that he had take 16 species of Catocala at sugar this season, and 

 that a friend of his who has been sugaring industriously has found the Catocalas to be 

 most abundant about midnight, 



On the 24th another meeting of the Club was held at 2 p. m., the President in the 

 Chair. 



The Committee on Nomenclature, consisting of Dr. LeConte, S. H. Scudder, A. R. 

 Grote, C. V. Riley and W. Saunders, reported a set of rules, on some of which thej' were 

 unanimous, while on others there was a divided opinion. They had given all the attention 

 to the subject possible within the limited time at their disposal, but had not found time 

 to consider the explanations offered in the majority report presented, and suggested that 

 these be referred back to the Committee, with power to print such explanations as may 

 be agreed on with the rules. 



The following are the rules submitted : — 



1. The binominal system, as originated by Linnaus, is the only one to be recognised. 

 The use of a third word, however, connected with the second by a hyphen, as is common 

 and desirable in the case of gall insects, e.g. Cijnips quercus-palustris, is not to be consid- 

 ered as an infraction of this rule. (Unanimous.) « 



2. Where a specific name has been generally adopted during a period of twenty years, 

 such name shall not be changed for one of prior date. (Divided opinion.) 



3. The name placed after a genus should be that of the author who established the 

 genus in the sense in which it is actually used, but the name of the author who first pro- 

 posed the terra should be cited in brackets. (Unanimous.) 



4. No generic or specific name should be acknowledged which has not been printed 

 in a published work. (Unanimous.) 



5. A generic name, when once established, should never be cancelled in any subse- 

 quent subdivision of the group, but retained in a restricted sense for one of the constitu- 

 ent portions of the original genus. (Unanimous.) 



6. In constructing family names they should end in idm. (Divided opinion.) 



