PROC. ENT. SOC. WASH., VOL. 22, NO. 5, MAY, IQ2O 97 



near Jacksonville, Fla., under the loose moist bark of a decaying 

 log where there were no Termites present. Thus it appears as if 

 their frequent occurrence with or near Termites is only a result of 

 their requiring the same environmental conditions, mainly a matter 

 of the proper amount of moisture. 



The discovery of alated individuals of Zorotypus raises some 

 doubts as to the real status of the wingless individuals, heretofore 

 the only form known. From a general consideration of the 

 structure of both alated and apterous specimens and from the 

 fact that this is a social insect may be inferred that it is a case 

 of cast, allied to the closely related order Isoptera. The fact 

 that alated adults shed the wings in a manner similar to that of 

 the white ants seems to strengthen this view. If such is actually 

 the case, however, it will have to await actual demonstration 

 until something more is known of the biology of these interesting 

 insects. 



In Texas and in Florida nymphs of the hemipterous genus 

 Systellodems were taken in colonies of /orotypus. These insects 

 are predatious and probably feed on the Zorotypus. The Texas 

 species, taken by Mr. Barber near Liberty on November 20, 19 IS, 

 was determined by Mr. Gibson as 5. biceps Say. Mr. Wetmore 

 took the Florida bugs at Timm's Hammock on March 1, 1919. 

 This form w r as determined by Gibson as a species near angiistatn* 

 Champ., of the West Indies. 



Associated with the Z orotypus at Timm's Hammock Mr. Wet- 

 more found a number of very young nymphs of the earwig Ani- 

 solabis annulipcs, which resembled in size and action specimens 

 of Zorotypus so much as to be mistaken for them. Mr. Barber 

 has also noted this resemblance in the field. 



EXPLANATION OF PLATE. 



Fig. 1. Zorotypus hubbardi Caudell. (Alated adult of winged form. Fe- 

 male.) 



Fig. 2. Zorotypus hubbardi Caudell. (Dealated adult of winged form. In- 

 male, i 



Fig. 3. Zorotypus hubbardi Caudell. (Nymph of winged form. Female. > 



Fig. 4. Zorotypus hubbardi Caudell. (Unchitini/.ed adult of apterous form 

 Female.) 



Fig. o. Zorotypus snyderi Caudell. (Antcnn i of diitini/.ed adult of aptemu- 

 form. Male, i 



