OF WASHINGTON. 15 



drawings of well-known insects, some of them life size, and 

 others enlarged to varying proportions between one-fourth and 

 two times. These were submitted to various entomologists 

 for their opinion, and in nearly every instance those which were 

 enlarged about one-fourth appeared to them to represent the 

 natural size of the insect. 



— Doctor Hopkins presented a paper entitled " Some Results 

 of Anatomical Investigations of the Thoracic Segment of 

 Insects." It was discussed by various members. Doctor Gill 

 expressed his disapproval of the use in insect anatomy of 

 terms used in the anatomy of vertebrates. Pieces which had 

 been referred to as clavicle and scapula could not by any possi- 

 bility be homologous to the bones so designated in the verte- 

 brate skeleton, and the names were not only incorrectly used, 

 but their use would almost certainly bring about some confu- 

 sion eventually. The use of such terms as femur, tibia, and 

 tarsus should not be considered as forming a precedent in this 

 respect, and if it were practicable he thought that their con- 

 tinued use should be discouraged. 



— Mr. Schwarz exhibited adults and larvae of Hilipus ele- 

 gans Guer. collected in Jamaica. He stated that the North 

 American genera Pissodes and Hylobius were unknown in 

 Cuba and the other West Indian islands, and that Hilipus was 

 the nearest ally of these genera in the tropics. Of this there 

 are very many species, there being about 80 from Mexico and 

 Central America, and in the neighborhood of 200 from South 

 America. While the genus is represented in the West Indies, 

 the number of species found there is comparatively small. 

 Unlike the related forms in the North, none of them, so far as 

 known, breeds in pine, and in the case of the majority their 

 geographical range makes it impossible that they should do 

 so. Until the larva of H. elegans was discovered, however, 

 the early stages of none were known. This species is injuri- 

 ous to camphor trees, boring in the inner bark, and scoring the 

 surface of the wood in a manner very suggestive of Pissodes. 

 It is of additional interest in this connection, as neither it nor 

 its food plant is a native of Jamaica. 



— Mr. Marlatt presented the following paper : 



