CHBYSOSTOLA. — ECDEMUS. 237 



831. Chrysostola tetrazona, insert : — - 



Eumenogaster pseudopolybia, Sckrottky, Iris, xxii. p. 135 (1909) 



for the subspecies. 



Paraguay, Puerto Bertoni (Scfirotll'i/), 1 <S . 



832. Chrysostola sanguiceps, insert (syn.) : — 



Sphecopsijche julumito, Dogii. Ann. Soc. Ent. Belg. xlii. p. 344 (1898). 



s3-j a. Chrysostola atridorsata. (Plate XII. fig. 25.) 



Chrysostola atridorsata, Hmpsn. A. M. N. H. (8) iv. p. 347 (1909). 



d ■ Head, thorax, and abdomen orange-yellow ; antennae black 

 with some white on shaft towards tips ; vertex of head with 

 black spot ; patagia and dorsum of thorax with black stripes ; 

 pectus with lateral black spots ; abdomen with dorsal black stripe, 

 the two terminal segments with black bands, subdorsal short black 

 stripes at base and middle and sublateral black spots at base. Pore 

 wing hyaline, the veins and margins black ; the base orange, an 

 orange streak on inner margin to beyond middle ; a black discoidal 

 spot conjoined to the costal fascia ; the terminal band expanding 

 into a patch at apex. Hind wing hyaline, the veins and margins 

 black ; the inner area and an apical patch black. 



Hob. Br. Guiana (Rodway), 1 <J type ; Rio Demerara, 1 J . 

 Exp. 26 millim. 



*840a. Chrysostola nivaca. (Plate XII. fig. 26.) 



Heliura nivaca, D. Jones, Trans. Ent. Soc. 1914, ined. pi. i. f. 8. 



cS . Head brown, the back of head, thorax, and abdomen crimson ; 

 palpi orange, black at tips; tibia? banded with black, the tarsi 

 orange at base, black at tips ; abdomen with brown segmental lines 

 and silvery blue dorsal streak on terminal segments, sublateral white 

 spots on basal segment. Fore wing hyaline, the veins and margins 

 rufous ; a yellow streak below antemedial part of costa and yellow 

 patch on postmedial costal area ; a broad erect medial rufous band ; 

 the terminal band expanding widely on apical area. Hind wing 

 hyaline, the veins and margins rufous ; some yellow at base of inner 

 margin ; the terminal band expanding widely towards apex and 

 below vein 2. 



Abdomen slightly constricted near base ; hind wing with vein 1 

 from 3 just before termen. 



Hah. Brazil, Matto Grosso, Nivae, typef J in Coll. I). Jones. 

 Exp. 26 millim. 



*841 a. Ecdemus rubrothorax. 



Teucer rubrothorax, Koths. Nov. Zool. xviii. p. 43 (1911), & xix. 

 p. 375, pi. iii. f. 3. 



J. Head and tegulse black, the palpi in front, frons, a few 

 soaks on vertex of head, and tcgulie at base and above white; 



