PROC. ENT. soc. WASH., VOL. 22, xo. 5, MAY, 1920 91 



Entomology at East Falls Church, Va., and enclosed in 50-lb. 

 lard cans. These proved congenial quarters for the Termites, 

 which lived and thrived. In the summer of 1919 it was dis- 

 covered for the first time that the cans also harbored a thriving 

 colony of Zorotypus, furnishing the material here discussed, ex- 

 cept a single male above noted as being taken in 1919. 



This is a very distinct species from Z. hubbardi, but seems 

 quite closely allied to the Costarican species described 1 by Syl- 

 vestri as Z. neotropicus. It does not agree, however, sufficiently 

 well with the characters of neotropicus as described by Sylvestri 

 to justify its being considered that species. 



In this species are found the various forms or phases as noted 

 above under hubbardi and in addition there is an apterous and fully 

 pigmented adult. The various forms are here descriptively noted. 

 Adult of Winged Form (Female, Male Unknown). 



In general appearance very like hubbardi as shown in Fig. 1. The size 

 and color is practically the same, as is also the structure except as here noted. 

 Antennae with the second segment small as in hubbardi but with the third 

 segment of sub-equal length with the fourth and enlarging from the base to 

 the apex, where it is nearly as thick as the fourth segment; beyond the third 

 segment the antennae are about as in hubbardi. Fig. 5, drawn by Mr. R. 

 E. Snodgrass, shows the antennae of this species. Thoracic segments from 

 a dorsal view not differing noticeably from those of hubbardi. Bristly hairs 

 of the abdomen, especially those situated posteriorly above, noticeably 

 stouter and longer, the terminal bristle of the cercus fully twice as long as 

 the cercus itself. Fore tibiae with short spines above and below, those on 

 the ventral margin not worthy of special notice such as is described in Z. 

 neotropicus. Hind femora with more conspicuous bristles above and armed 

 beneath with two long slender spines on the apical fourth of the outer mar- 

 gin and with a series of about ten shorter and stouter ones, on the apical 

 three-quarters of the inner margin, the basal two and one near the apex 

 the larger. Some variation will probably occur here. Abdomen essentially 

 as described under the corresponding stage of Z. hubbardi. The more heavily- 

 armed posterior femora, the basal structure of the antennae and the longer 

 terminal seta of its cerci make very easy the separation of this species from 

 Z. hubbardi. Length, to tip of abdomen, about 2 1 / 2 mm., fore wings 3 mm. 



A single fully winged female which I choose as the Holotype, 

 Miami Beach, Fla., 1917, Snyder. No dealated specimen found. 



The fact that no winged males of either of our species of Zoro- 

 typus are known might seem to indicate that there are no males 

 of this form. But, considering that but sixteen winged specimens 

 in all have thus far been found, this would be a presumptions 

 hypothesis to advance. 



1 Boll. Lab. Agr. Portici, vol. 10, p. li'O (1916). 



