68 ENTOMOLOGICAL NEWS. [Feb., '18 



in the plate actually published having been made by Mrs. 

 Peart. 



Mr. B. Neumoegen received quite a number of both sexes of 

 apacheana and the specimens in collections are from this ma- 

 terial. Mr. Jacob Doll informed me that all these specimens 

 were shipped from Kanab, Utah, but he did not know the ex- 

 act locality where they were taken. There can be no question 

 but that the original description of nokomis applies to what 

 we know as nitocris and therefore nitocris becomes a synonym 

 of nokomis. 



If anyone possesses specimens of apacheana, with accurate 

 data, it would be very useful to have the localities and dates 

 of capture published. At present I am not prepared to say 

 anything about the specific value of the two names, but I have 

 not seen any maculation characters that show intergradation. 



Variation in Labial Characters in the Nymph of 

 Gomphus spicatus (Odonata). 



By ALICE L. STOUT, Buffalo, New York.. 



In the identification of a collection of Gomphns nymphs 

 sent to the Limnological Laboratory of Cornell University, 

 slight variations were noticed in the minute characters of labia 

 whose general form seemed identical. As the labial char- 

 acters are those most depended upon for the separation of 

 species, it was necessary to study the variation in one species 

 before using the minute characters to differentiate between 

 species. The material for this study was one hundred and 

 ten exuviae of nymphs of Gomphns spicatus collected by Dr. 

 Needham at one time and place. 



The labial characters used for the separation of species are 

 as follows : The shape of the median lobe, the presence or 

 absence of a median tooth on this lobe, the form of the median 

 tooth when present, the number and shape of the teeth on the 

 inner margin of the lateral lobes. 



In the following study, variations in the above points were 

 noted. I mounted one hundred and ten labia from the above 



