AKT. 6 TKOPICAL, AMEEICAN APTERYGOTA FOLSOM 9 



the mucro. Mucro (fig. 54) comparatively elongate, with apical and 

 anteapical teeth and long proximal spine. Length, 1 mm. 



Headwaters of Chilibrillo River, Canal Zone, September 29, 1923, 

 in limestone caves in bat dung, J. Zetek and I. Molino, collectors. 



Dakota, Tela division, Honduras, May 20, 1923, T. H. Hubbell. 



Syntypes.—Csit. No. 40386, U.S.N.M. 



LEPIDOCYRTUS NIGROSETOSUS, new species 



Plate 7, figs. 55-57 



Body color, cream yellow. The scales, where present, form brown 

 patches. Pigment purple, scanty. Mesonotum clouded with purple 

 along the lateral border; metanotum feebly pigmented laterally; 

 fourth urotergite with a little pigment at the posterolateral angle 

 and along the lateral border. The head bears dorsally a spot between 

 the bases of the antennae, and a narrow curving line along each 

 antennal base. First three antennal segments each yellow with 

 purplish distal ring or cloud; fourth segment purplish. Legs yel- 

 low; precoxal segments weakly pigmented. Furcula yellow. Eyes 

 (fig. 55) 8 + 8, the two inner proximal eyes of each side somewhat 

 smaller. Antennae one-half longer than the head; segments as 

 4 : 7 : 8 : 13 ; first segment subcylindrical, second and third clavate- 

 cylindrical, fourth elliptical. Mesonotum not strongly projecting 

 over the head. Unguis (fig. 56) with a pair of lateral teeth; inner 

 margin with a proximal pair of teeth two-fifths from the base, and 

 a smaller distal tooth midway between the proximal pair and the 

 apex. Unguiculus extending three-fifths as far as the unguis, lan- 

 ceolate-oblong, acuminate, untoothed. Tenent hair a little shorter 

 than the unguis. Fourth abdominal segment four to six times as 

 long as the third. Furcula not attaining the ventral tube ; extending 

 a little beyond abd. 3. Dorsal surface of dens denticulate in profile, 

 the teeth continuing along the mucro as far as the proximal spine. 

 Mucro (fig. 57) comparatively elongate; apical and anteapical teeth 

 subequal; proximal spine present, long, acicular. Most of the setae 

 are dark colored; these blackish fringed setae are particularly con- 

 spicuous on the antennae, oral region, lateral borders of mesonotum 

 and metanotum, and on abd. 5 and 6. Length, 1.6 mm. 



Manati, P. R., April 30, 1924, on wet dead leaves of "jaguey" 

 (Ficus laevigata) on the ground, G. N. Wolcott, collector. 



Syntypes.—C^t. No. 40387, U.S.N.M. 



LEPIDOCYRTUS SUMMERSI (MacGillivray) [New combination] 



Btrongylonotus summersii MacGillivray, 1894 



Plate 7, figs. 58-60. 



White, marked with purplish (fig. 58) . Second and third abdominal 

 segments each bordered posteriorly with purplish; abd. 4 with a 



