AET.6 TROPICAL AMEEICAN" APTERYGOTA FOLSOM 7 



FOLSOMIA FIMETARIA (Linnaeus) Tullberg var. DENTATA, new rariety 



Plate 5, figs. 44, 45 



This new variety agrees with typical flvietaria except as follows: 



Postantennal organ (fig. 44) subelliptical with a notch at the 

 middle of the anterior margin (present occasionally in the typical 

 form also) ; in length one-third of the basal width of the first an- 

 tennal segment. Antennae subequal to head in length, with seg- 

 ments in relative lengths about as 3 : 5 : 4 : 7 or 2 : 4 : 3 : 5. Unguis (fig. 

 45) strongly unidentate at the middle of the inner margin. Fur- 

 cula short, extending not beyond the middle of the second abdominal 

 segment. Dentes longer than manubrium (as 4.5:4 or 5:4). Erect 

 sensory setae of abdomen relatively short (two-fifths as long as the 

 segment, on abdominal segment 1 and abdominal segment 2, respec- 

 tively), and simple — not distalh^ serrate. Length, 2 mm. 



This variety dentata is close to var. caldaria Axelson, of Finland 

 and Poland (Axelson, '05, p. 790; Linnaniemi, '12, p. 116; Stach, 

 '21, p. 160), which also has an inner tooth on the unguis. 



Taken in Irish potatoes from Vera Cruz, Mexico, intercepted at 

 New Orleans, La., by W. T. Dillard, March 30, 1923 (Fed. Hort. 

 Board, N. O. No. 281). 



/Syntypes.— Cat. No. 40384, U.S.N.M. 



Genus ENTOMOBRYA Rondani 



ENTOMOBRYA CUBENSIS. new species 



Plate 6, fig-s. 4(>-50 



White, rather scantily marked with blue (figs. 46, 47). Large 

 specimens have often a yellowish tinge. The pigment is in the 

 form of loose flecks, forming spots or clouds of indefinite form. 

 Head with a little lateral pigment and a pair of spots or a transverse 

 mark in front of the eyes. Prothorax feebly pigmented laterally; 

 mesonotum and metanotum bordered laterally with pigment. First 

 three abdominal segments each clouded with pigment laterally. 

 Dorsum of fourth abdominal segment with an antero-lateral patch 

 and an irregular posterior band; abd. 5 and 6 each with dorsal and 

 lateral spots. Antennal segments white basally, blue apically. Legs 

 white, excepting a distal spot or band on the femur and a spot or 

 band before the middle of the tibia. In large yellowish specimens 

 the femora are orange distally, and the tibiotarsi prosimally. Fur- 

 cula white. Eyes (fig. 48) 8 + 8, unequal, the two inner proximal 

 being the smallest. Antennae twice as long as the head; second 

 segment almost twice as long as the first, and a little longer than 

 the third; fourth one and one-half to two times as long as the third. 

 Unguis (fig. 49) almost straight, slender, with a pair of long sharp 



