250 



PSYCHE. 



[June 1895. 



Gryllidae. 



Since my paper on the " Gryllidae 

 of Indiana "* appeared, seven addi- 

 tional species have been taken, so that 

 now 22 are known to occur in Vigo 

 County. From what is known of the 

 life history of the mole crickets, the two 

 species, Gryllotalpa borealis Burm., 

 and G. colu7nbia Scudder, undoubtedly 

 exist through the winter in the larval 

 stage, though I have never happened 

 upon them in that season. 



A careful study of the members of 

 the genus Gryllus during the last three 

 years has developed the fact that 4 

 species, namely : G. neglcctits Scudder, 

 abbreviatus Serville, pennsylvaiiictis 

 Burm., and luctuosus Serville inhabit 

 the county. The last two may be dif- 

 ferent forms of the same species, but 



that the first 3 are distinct, there is, to 

 my mind, no doubt. 



Of these, the eggs of tieglectus and 

 pennsvlvanicus, and probably those of 

 luctuosus, hatch in autumn, and the 

 young in numbers may be found 

 beneath logs, rails, and other protective 

 cover during the entire winter. Often 

 as many as a dozen are sheltered 

 beneath the same object, each at the 

 bottom of a cone-shaped pit, quite sim- 

 ilar to the one made in loose sand by 

 the larva of the ant lion, Myrmeleon 

 obsoletus Say. 



G. veglectus reaches maturity as 

 early as May 5th, the males having been 

 heard chirping on that date. Penn- 

 sylvanicus and luctitosus are full 

 grown about the 25th of May, while 

 the adults of abbreviatus, from eggs 

 hatched in spring, do not occur imtil 

 the last week in July. 



EGGS OF THE LONG-NOSED OX-LOUSE, HAEMATOPINUS 



VI TULA L. 



BY F. L. HARVEY, OROXO, ME. 



Professor Osborn says in his mono- 

 graph " Pedicula and Mallophaga af- 

 fecting Man and the Lower Animals" 

 (Bull. 7, Div. Ent. U. S. Dept. Agric. 

 p. 18) " that the eggs of this species 

 have not been described, and we have 

 not had the good fortune to discover 

 tliem." Having been more fortunate 

 we are able to submit the following 



* Proc. Ind. Acad. Sci., i8 



account of the eggs of this species. 

 The Long-nosed ox-louse has been 

 quite bad this winter in herds in the 

 vicinitv of Thomaston, Me. At our 

 request Mr. A. W. Batchelder of 

 Thomaston collected some liair from 

 the infested animals, and upon this 

 we found three egg-shcUs with the 

 operculum ofl', but the form, sculpture, 

 manner and place of attachment to the 

 hairs seemed perfect. 



