80 Journal New York Entomological Society. [Vol. xxl 



Tridactylus are also more usual in wet places, but exceptionally found in dry. 

 Mr. Davis made it plain in furnishing these instances of Orthoptera more 

 abundant in moist terrestrial environment, that the association was always in 

 his experience more or less incomplete and properly to be expressed as the 

 usual habitat of the insect, rather than as a necessary result from the charac- 

 teristics of the environment. 



Mr. Davis also showed from his collection of plants some of those referred 

 to by previous speakers, particularly those which by the form of the leaves 

 or by sticky hairs catch insects. The pitcher plant, of which one specimen 

 was eaten by an insect, drew from Dr. Forbes an identification of the insect 

 that had caused the damage, a species of Exyra, probably rolandiana. In the 

 case of the sundews, abundant at Lakehurst, Mr. Davis showed also some of 

 the insects he had found entangled in the hairs. 



Mr. Barber invited some discussion of the limits of the topic, especially 

 in respect of insects feeding upon palustral plants. Dr. Lutz and Mr. Leng 

 spoke on this subject, and it was understood that while generally speaking 

 insects infesting plants should be reserved for the symposium of April 15, yet 

 the introduction of such as exhibited special adaptations for aquatic or hydro- 

 phytic environment was appropriate in connection with those subjects. 



Mr. Leng read a paper on " Coleoptera of Moist Terrestrial Environ- 

 ment," in which he referred especially to the species of Carabidae frequenting 

 the shores of ponds and streams, showing for instance that the distribution 

 of the genus Omophron was controlled by local environment, while the species 

 tessellatum was confined to the sea beach and the species labiatum to the 

 more austral parts of our region. Numerous other instances were given to 

 illustrate a similar restriction of distribution by moisture. Mr. Leng also 

 referred to the larva of Brachinus, said by Wickham and by Dimmock and 

 Knab to be parasitic on the pupa of Dineutes assimilis. 



Mr. Harris, being asked to speak of tiger beetles, said that Cicindela hirti- 

 collis was more addicted to wet burrows for its larva than any other species, 

 having been found on Long Island sand bars in situations inevitably wetted at 

 high tide. C. marginata also frequents low banks near tidal streams, but as 

 a whole tiger beetles do not come within the scope of the present subject. 



Mr. Pollard spoke of Orchelimum volentum at Greenfield Pond, near Wil- 

 mington, N. C, when disturbed, diving, always beneath the lily pads. Dr. 

 Forbes asked if Thysanura were not peculiarly insects of moist terrestrial 

 environment. 



Mr. Dow said that they lived in such wet places. Mr. Schaeffer said that 

 they would be found in cellars or among wet leaves. Mr. Dow said they 

 should really be divided into two classes, the bristletails being found in drier 

 places than the springtails, which must have wet environment, as their mouths 

 cannot take in food unless it is rotted to an almost liquid consistency. 



The President asked Dr. Forbes if the species found on Nehimbo would 

 be the same as those found on water lilies. 



Dr. Forbes replied yes, that Pyrausta penitalis had habits similar to the 



