Il8 PROC. ENT. SOC. WASH., VOL. 22, NO. 6, JUNK, IQ2O 



with short wing-pads than in species of Reticulitermes . Such 

 forms are also of more common occurrence. The wing-pads vary 

 in length from mere vestigal buds to a length approaching that 

 of the second form. 



"In colonies of Termopsis angusticollis Hagen, Heath (1903) 

 describes fertile soldiers with wing buds, which produced 'normal 

 progeny.' The question might well be asked what would be 

 'normal progeny' under these circumstances?" (Thompson and 

 Snyder, 1919). ' 



"Soldiers with vestiges of wing-pads have been noted by the 

 writers in several species of Calotermes; C. occidentis Walker, and 

 two new species from southern Florida; and by N. Banks in C. 

 minor Hagen, and other species of Calotermes. Vestigal wing-pads 

 are evidently of frequent occurrence in this genus, although these 

 soldiers are in general not fertile," (Thompson and Snyder, 1919). 



These intermediate reproductive forms, their fertility, and 

 their progeny will be discussed in more detail later. 



Other Insects with Similar Reproductive Forms. 



In the aphids there are both winged and apterous reproduc- 

 tive forms. There are also a large series of intermediate repro- 

 ductive forms with both short and vestigial wing-pads. Apter- 

 ous females are a common reproductive type. Unlike termites, 

 parthenogenesis exists among aphids. 



Another insect with both winged and apterous reproductive 

 forms is Zorotypus hubbardi Caudell, in Silvestri's new order 

 Zoraptera closely related to termites, (Silvestri, 1913). This 

 species of Zorotypus produces winged, deeply pigmented adults 

 in the autumn (in Texas). In the parent communities, unpig- 

 mented apterous reproductive forms are also present and fairly 

 numerous in communities in Florida and Texas. 



In parent communities of another species (Zorotypus snydcri 

 Caudell MS) both winged, pigmented adults and a deeply pig- 

 mented apterous form occur in Florida. 



In case of the dealated adults, apparently no more than a 

 single pair is present in the same Zorotypus community in Florida. 

 The winged adults develop from nymphs with wing-pads, which 

 gradually increase in length, as in termites. The winged adult 

 has both compound eyes and ocelli as has the winged adult ter- 

 mite, but has three ocelli, the normal two lateral ocelli (but lo- 

 cated differently than in termites) and a median ocellus, instead 

 of the usual two in termites. 



As previously stated, two types of apterous reproductive forms 

 occur in species of Zorotypits an unpigmented form and a form 

 which has just as deep pigmentation as the winged adult which 



