148 ENTOMOLOGICAL SOCIETY 



EXPLANATION OF PLATE II. 

 Labial Plate of Mosquito Larvae. 



1. Culex sylvestris, Durham, N. H. 



2. The same, another example. 



3. The same, Washington, D. C. 



4- Culex restuans, Homers Town, N. J. 



5. The same, Center Harbor, N. H. 



6. Culex nigrituhis, Elizabeth, N. J. 



7. Culex pip lens* Durham, N. H. 



8. The same, Washington, D. C. 



9. Culex jamaicensis, Washington, D. C. 



10. Culex atropalpus, Potomac river, Md. 



11. Aedes fuscus, Center Harbor, N. H. 



13. Stegomyia fasciata (Army Medical Museum). 



13. Culex dyari, Center Harbor, N. H. 



14. Culex bimaculatus, Baton Rouge, La. 



15. Culex sollicitans, Elizabeth, N. J. 



1 6. Culex canadensis, Center Harbor, N. H. 



17. Culex melanurus^ Center Harbor, N. H. 



1 8. Culex territans, Center Harbor, N. H. 



NOTE. Since these remarks were read, Dr. John B. Smith 

 has published in Entomological Neivs a series of figures show 

 ing the labial plate of a number of the species shown here. These 

 should be consulted in this connection to show the variations in 

 this structure in the same species. My plate shows the organ 

 drawn to the same scale for all the species ; in Dr. Smith's plate 

 this is not the case. It will be seen that there is considerable 

 variation in absolute size as well as in shape in the different species. 

 Some of the species have been drawn from more than one exam 

 ple to indicate the individual variation. (See p. 153.) 



Dr. Howard congratulated Dr. Dyar upon the results of his 

 studies of mosquitoes, and said that he would await with interest 

 their publication, when he would have an opportunity of learning 

 the results of his work more in detail than was possible in listen 

 ing to the reading of the paper. He had visited Holland in the 

 middle of last September, he said, and made some observations 

 on the occurrence of mosquitoes there. These seemed not to 

 breed in the large canals but in the ornamental fountains near 

 houses. Anopheles was abundant in South Holland. Mr. War 

 ner mentioned some mosquito observations of his, and Prof. Hop 

 kins spoke of species he had come across on the Pacific Coast 

 and in North Carolina. 



