﻿306 PROCEEDESTGS OF THE NATIONAL MUSEUM vol. 102 



median, club-shaped sensilla to the base of the tarsus is 52-57/x, 

 In addition to the seven blunt sensillae shown on the outer face of the 

 tarsus in figure 85, e, there are three more on the inner face, their 

 positions indicated by x. Tarsus III (fig. 85, h) with a large, heavy, 

 subapical spine. 



The anterior and posterior transverse apodemes and the median 

 apodeme of the mesonotum are shown in figure 86, b. They were 

 drawn from the stained specimen, and can be seen vaguely on the 

 unstained specimens. 



On the metanotum, the anterior transverse apodeme is more 

 strongly developed than on the mesonotum and is bowed. From it, 

 the median apodeme runs two-thirds the length of the metanotum, 

 and is more noticeable than on the mesonotum, even on the unstained 

 specimens. The posterior transverse apodeme is slightly more 

 developed than the mesonotal one. 



CHAETOTAXY OF THORAX 



Pronotum: With two pairs of setae; median pair 46^4 apart, 17^ long; 

 outer pair 20^ long, near the lateral border. 



Mesonotum (fig. 86, 6) : From median anterior to posterior margin 

 76m. Anterior setae (la-4a) : At the middle, setae 1 are 14)u apart, 

 9 At long; setae 2 are 22/i from setae 1, and are 9m long; setae 3 are 23m 

 anteriolateral from setae 2, and are 12m long; setae 4 are on the anterio- 

 lateral margin, 17m long. Posterior setae (lp-5p) : At the posterior 

 margin, setae 1 are 25m apart, 15m long; setae 2, slightly posterior of the 

 chitinized margin, 14m long; setae 3 are 22m long; setae 4 are anterior 

 to setae 3, near the lateral border, 9m long; setae 5 are anterior to setae 

 4, and are 29m long. Near or on the peritreme of the spiracle are two 

 setae; the anterior is 15m long, the posterior is 11m long. 



The number of setae and their approximate position correspond 

 with that figured for E. ribagai Berlese (1909, pi. 3, fig. 22), and with 

 that figured for E. armatum Stach by Tuxen (1949, Abb. 66). In 

 E. germanicum Prell as figured by Prell (1913, pi. 3, fig. 11), the same 

 condition prevails, except that setae 5p are missing. Gisin's figure 

 of E. armatum Stach (1945, fig. 1) shows the same number of setae, 

 but the position of the anterior setae is quite different. I have 

 examined the holotype slides of E. rostratum Ewing (1940) and of 

 E. pallidum Ewing (1921), and the number and approximate position 

 of the setae are the same as for E. venezuelense. 



Metanotum: Same length as mesonotum. Anterior setae 1 are 

 34m from anterior transverse apodeme, 17m apart, 11m long; setae 2 

 are 11m long; setae 3 are 15m long; setae 4 are on the anteriolateral 

 margin, 8m long, and close to each one is a microchaeta. Posterior 

 setae 1 are on the transverse apodeme, 28m apart, 17m long; setae 2 



