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the Sclerodermus, but usually tliey were able to master the 

 ordinary forms of workers and nymphs and the dealated adults, 

 but in every case the soldiers were able to kill their assailants. 

 Several hundred Sclerodermi in all were bred from this host. 

 The only possible prey rejected by this species which were 

 offered were paralyzed crab-spiders from the nests of 

 Sceliphrun, a mealy bug of the genus Pseiulococcus, 

 and the larvae of a species of flesh fly, Sarcophaga. The re- 

 fusal of the mealy bugs and spiders was absolute, the Scler- 

 odermi placed with them dying of starvation. The behavior 

 Avith the Sarcophaga larvae and the puparia into which some 

 of them transformed was interesting and the Sclerodermi 

 showed marked differences in their actions towards the pu- 

 paria. A lot of Sarcophaga larvae were squeezed from the 

 mother fly and placed upon cooked meat, Oct. 8, 1910, and 

 this moistened with water the next day. On Oct. 10 they 

 were removed from the decayed meat, placed in coral sand 

 to absorb as much of the juices as possible, washed in clean 

 water and dried on blotting paper and placed separately in 

 tubes plugged wdth absorbent cotton and a female Scleroder- 

 mus immigrans placed with each. In almost every case the 

 Scleroderiivas removed to the farthest point in the tube and re- 

 mained there. In several cases, however, the maggot in its 

 wanderiujts crowded near the Sclerodermus and in these she 

 attacked the larva with her sting from the cotton but did not 

 take hold with mandibles and feet. On Oct. 11, out of forty- 

 nine Sclerodermi placed with Sarcophaga larvae thirteen 

 were dead and out of the thirty-six surviving but one was 

 found close to the maggot. The deaths of the thirteen Scler- 

 odermi were in most cases probably due to starvation. Some, 

 however, were dead on account of the foul discharges of the 

 larvae, per auo, which had covered the Sclerodermi, and it may 

 be that this was the principal cause of death in the others as 

 well. All the maggots had passed such discharges but it was 

 in some cases dried about the anus of the maggot and had not 

 greatly contaminated the tubes. The maggots were removed 



