628 PROCEEDINGS OF THE NATIONAL MUSEUM vol. iii 



angle not produced; membrane longer than basal width, surpassing 

 apex of abdomen. 



Propleuron: With few distinct punctures in depression; prosternal 

 carinae less than half as high as labial II. 



Mesopleuron: Evaporatorium reaching into posterolateral angle, 

 not attaining lateral margin; lateral area impunctate, somewhat 

 depressed apically. 



Metapleuron: Lateral margin of evaporatorium virtually straight; 

 lateral area polished, impunctate. 



Sternites: Shining, very weakly alutaceous, impunctate. 



Legs: Not specially modified. 



Terminalia: Genital capsule distinctly punctured laterally, apical 

 margin broadly but shallowly concave; gonostylus as illustrated (fig. 

 283). 



Length of body: 4.33(4.20-4.47). 



Female: Similar to male, but side margins of pronotum not 

 sinuate, measurements averaging larger. 



Head: Length-width ratio, 0.74(0.71-0.80) :1. 17(1. 13-L23); inter- 

 ocular width, 0.70(0.70-0.71). Antennal segments: I, 0.26(0.25- 

 0.28); II, 0.27(0.26-0.28); III, 0.37(0.36-0.40); IV, 0.46(0.46-0.46); 

 V, 0.60 (only one specimen with terminal segment). Labial segments: 

 I, 0.37(0.36-0.39); II, 0.69(0.67-0.70); III, 0.56(0.53-0.60); IV, 

 0.34(0.33-0.36). 



Pronotum: Length-width ratio, 1.36(1.31-1.43) :2. 50(2.43-2.60). 



Scutellum: Length-width ratio, 1.69(1.48-1.82): 1.56(1.56-1.57). 



Length of body: 4.84(4.63-5.09). 



Type data. — The locality of Stal's type (Stock) was given as Rio 

 de Janeiro, Brazil. 



Specimens studied.' — 3 males, 3 females. 



Brazil: "Brasilia," Coll. Brancsik, 1 female (Hung). Blumenau, Hetschko, 

 89, 1 male (Wien). Distrito Federal, Carvalho, 1 male (Carv). Rio de Janeiro, 

 1 male (type, Stock); 1 female (Car). Rio Doce, Minas Gerais, Mrs. Y. Mexia, 

 1 female (CalAc). 



Discussion. — Study of the type left no doubt about the identity 

 of this form. 



Subfamily Amnestinae Hart, new status 



Amnestini Hart, 1919, p. 204. 



Diagnosis. — This subfamily is the only one within the family 

 Cydnidae showing a claval commissure. 



Description. — Head: Antennae 4-segmented or 5-segmented. 



Scutellum: Short not reaching apices of clavi, latter forming a 

 distinct claval commissure posterior to scutellar apex. 



