1920.] NATURAL SCIENCES OF PHILADELPHIA. 349 



SPARATTINAE. 



Sparatta semirufa Kirby (Plate XllI, figure 8.) 



1896. Sparatta semirufa Kirby, Jn. Linn. Soc. London, Zool., XXV, p. 

 528, pi. XX, figs. 4 and 4a. [ [cf]; Igaurassu, near Pernambuco, Brazil.] 



French Guiana, 1 cf. St. Jean du Maroni, French Guiana, 1 9. 

 St. Laurent du Maroni, French Guiana, 1 9 . 



These specimens agree closely and are clearly conspecific with the 

 specimen from Para, Brazil, referred tentatively to semirufa by Rehn. 

 Kirby's descriptions of species of this genus are thoroughly unsatis- 

 factory as to sex^3 and details of genitalia, hence determinations can 

 not be made with full satisfaction until the material from which 

 that author described semirufa has been studied. Kirby's figures 

 agree fully with the females before us, the genitalia of the male at 

 hand are here figured. 



All of the specimens we have seen are apparently paler than 

 Kirby's material. In these the pronotum, limbs, proximal portion 

 of tegmina and proximal portion of abdomen are immaculate ochra- 

 ceous buff, the head and antennae tinged with rosy. 



Parasparatta guyanensis new species (Plate XIII, figures 9 and 18). 



This species is related to the Mexican P. dentifera (Rehn) and the 

 Brazilian and Paraguayan P. nigrina (Stal).'* With the former it 

 agrees in abdominal coloration and form of male pygidium, with 

 the latter in antennal and limb coloration. 



The male forceps bear two teeth on each branch, as do those of 

 nigrina, but the position of these teeth is not the same, being more 

 nearly that of the two more distal teeth in dentifera. 



In the female, unlike in females of dentifera, the pygidium has the 

 ventral lamellate area completely visible from above, while the for- 

 ceps lack a proximo-internal lamellation. 



Type: cf ; St. Jean du Maroni, French Guiana. April and May. 

 [Paris Museum.] 



Size and form as in dentifera. Head greatly depressed, conven- 

 tional heart-shaped, the caudal margin rather strongly concave; 

 eyes very small, sutm-es obsolete. Antennae with first joint nearly 

 four times as long as broad; second joint minute; third joint slightly 



" Either Kirby mistook a female for a male when describing semirufa, or the 

 material before us represents a distinct species. We do not believe the latter 

 to be true. 



" See Borelli's excellent comparison of these species in Boll. Mus. Zool. Anat. 

 comp. Univ. Torino, XXX, No. 699, p. 3, (1915). Also discussion by Hebard, 

 Trans. Am. Ent. Soc, XLIII, p. 420, (1917). 



