February — March 1SS9.I 



PSYCHE. 



109 



it mated soon after casting its subiinago 

 pellicle it is probable that it would not 

 have lived but a dav or two longer. A. S. 

 Packard. 



PAIRING OF XYSTICUS TRIGUT- 

 TATUS. 



The engraving shows the pairing of one 

 of our most common crab spiders, Xy$ticus 

 triguttaftis Keyserling. The spiders were 

 seen on the 5th of June, among the short 



gra.9s in an open pasture between Salem and 

 Swampscott. Mass. The female held herself, 

 head downward, on a blade of grass with the 

 abdomen turned away only enough for the 

 male to reach under it with his palpi. There 

 did not appear to be any web on the grass, 

 though there may have been a few threads 

 for the female to hold hv. ^y. //. Emcrton. 



TROX AT ELECTRIC LIGHT. 



The fondness of various species of Trox 



for electric light has increased considerably 



the list of species known to inhabit Illinois. 



The following list includes all known to me. 



1. TroxscabrosHsBta.\xy. Taken at electric 

 light at Springfield 20 June i8S=;, bv Mr. C 

 A. Hart. 



2. Trox mo)iac/ius Hhi-t. There is a speci- 

 men of this species in the collection of the 

 State entomologist from Union Co. It has 

 also been taken near Pittsfield 111. 



3. Trox asper Lee. One specimen ob- 

 tained at electric light at Springfield. 



4. Troxpunctatus Germ. Not uncommon 

 throughout the state. 



5. Trox tuberculatus Deg. Specimens in 

 the State entomologist's collection taken at 

 Centralia 22 April. 



6. Trox erinaceus Lee. Rather rare but 

 found throughout the state. 



7. Trox capillar is "Sa.}-. Specimens in the 

 State entomologist's collection from La Salle 

 Co. 



8. Trox uuistriatus Beaux'. Qiiice com- 

 mon throughout the State. 



9. Trox foveicollis Har. 



10. Trox terresiris S^y. 

 mens from Pittsfield. 



11. Trox aequalis Say. 

 and central Illinois. 



12. Trox scaber \^\nn. 

 burg. 



13. Trox air ox Lee. 

 from Illinois. 



Only eight other species are known in the 

 United States. 



C. W. Woodwort/t. 



Rather rare. 

 I have seen speci- 



Rare in northern 

 Taken at Gales- 

 Recorded bv Horn 



Luminous eggs of insects. — E. Mulsant 

 observed and recorded in 1862 the fact that the 

 eggs of Lampyris were luminous. This ob- 

 servation was confirmed by Dr. A. Laboul- 

 bene, who published the statement in 1882, 

 but some entomologists have doubted the 

 fact of their luminosity. Wielowiejsky, who 

 published a paper in 1SS2. that dealt Ihor- 



