212 PROCEEDINGS OF THE ACADEMY OF [Part II 



gination formed more broadly rounded at more than a right angle. 

 Tegmina extending almost to cereal apices. 



Head shining blackish brown. Antennae blackish brown, with 

 a very broad buff annulus (including ten to twelve joints) in distal 

 portion. Pronotum shining blackish brown in caudal section and 

 extending cephalad in median convexity above head, remaining 

 portions transparent, tinged with warm buff, the caudal margins 

 of this area transverse laterad, with what appears to be a blackish 

 brown suffusion at the angles, due to the fact that there the blackish 

 brown area extends slightly farther cephalad on the ventral surface 

 than on the dorsal face, cephalic margin very finely blackish brown. 

 Tegmina mummy brown, blackish brown when closed, translucent, 

 except marginal field which is opaque. Wings transparent, tinged 

 with mummy brown, this weak in radiate field. Dorsal surface of 

 abdomen blackish brown, with lamellate lateral sections of second 

 and third tergites warm buff in the female, this marking in the male 

 the same for the third tergite, but reduced to a small spot on the 

 second tergite." Limbs and ventral surface prouts brown, deepen- 

 ing to blackish brown toward the abdominal periphery, but with 

 lamellate ventral portions of second and third tergites warm buff. 



Length of body cf 14^'- 13, 9 15; length of pronotum cf 3.8-3.7, 



9 3.8; width of pronotum d^ 1 .2-1 , 9 6.7; length of tegmen cf 11.8- 



12.7, 9 10.8; width of tegmen proximad cf 4.7-4.7, 9 4.4; width of 



tegmen distad d^ 4-4, 9 3.7; width of tegminal marginal field (^ 



1.8-1.95, 9 1.8 mm. 



The species is known from the described pair aud a paratypic 

 male from St. Laurent du Maroni.^i 



Phortioeca nimbata (Burmeister) Plate XIII, flgiu-e 3. 



1838. Z[etohora] nimbata Burmeister, Handb. Ent., II, Abth. II, Pt. 1, p. 

 511. [Pani, Brazil.] 



La Forestiere, upper MaroniRiver, French Guiana, 2 cf, 1 9 ,1 juv. 

 9. 



Nouveau Chantier, French Guiana, 2cf. 



Pariacabo, French Guiana, 1 juv. cf , 1 juv. 9 . 



Charvein, French Guiana, 1 juv. 9 . 



This species was placed by Saussure in what he considered the 

 second division of the genus Zetohora, (Phoriioeca) . It unquestion- 

 ably belongs to Phortioeca and not to Zetohora (as assigned by Kirby) 

 This is shown by the type of pronotum, with section above head 

 more distinctly cucullate, cephalic margin not broadly reflexed 



" The greater portion of this conspicuous pale marking is exposed when the 

 tegmina are at rest, due to the sudden emargination of those organs. 



^^ The measurements of the male type are given first. 



2' An immature female from Tollinche, Maroni River, French Guiana, repre- 

 sents this or a related species. 



