CYDNIDAE OF THE WESTERN HEMISPHERE — FROESCHNER 373 



Legs : Corbicle of hind tibia with a double, u-regular row of tubercles 

 on outer half. 



Terminalia: Gonostylus as illustrated (fig. 190). 



Length of body: 6.79(6.00-7.42). 



Female: Very sunilar to male, measurements more variable. 



Head: Width-length ratio, L65(L54-1.86) :1.39(1.30-L50); inter- 

 ocular width, 0.94(0.80-1.03); width of eye, 0.36(0.32-0.41). An- 

 tennal segments: I, 0.36(0.33-0.43); II, 0.42(0.34-0.53); III, 

 0.38(0.36-0.40); IV, 0.30(0.28-0.33). Labial segments: I, 0.48(0.40- 

 0.56); II, 0.55(0.45-0.63); III, 0.36(0.33-0.40); IV, 0.30(0.28-0.33). 



Pronotum: Length-width ratio, 2.30(1.84-2.66) :3.84(3. 18-4.45). 



Scutellum: Length-width ratio, 3.26(2.84-3.70) :2.35(2.05-2.73). 



Length of body: 6.50(5.40-7.56). 



Type data. — In Museo Argentina de Ciencias Naturales (formerly 

 Museo Nacional de Buenos Aires), Buenos Aires, Argentina, fide 

 correspondence from Kormilev. The publication containing the 

 original description was not available during this study. The data 

 from the type specimen, as furnished by Kormilev, gives the locality 

 as Matto Grosso, Brazil. 



Specimens studied: 10 males, 19 females. 



Brazil: Amazon River, Arary to Manoas, Sept. 20-21, 1930, Holt, Blake, 

 and Agostini, 1 male (USNM); Parintine, August 1935, G. V. Vredenburg, 

 2 males, 4 females (BrM) ; Bahia, Dec. 6, 1907, 1 male, 4 females (Car) ; Taperapes, 

 Aracuayes, Matto Grosso, J. Carvalho, 2 females (CMC). 



Peru: Puerto Maldanado, Madre de Dios, Apr. 17, 1947, alt. GOO ft., J. C. 

 Pallister, 6 males, 8 females (AmM). 



Venezuela: Samarlapo, Amazonas, June 12, 1950, J. M. Capriles, 1 female 

 (Cap). 



Scaptocoris grossa, new species 



Diagnosis. — The large size and unpunctate posterior lobe of the 

 pronotum distinguish this new species from its congenitors. 



Description. — Based on four females, one too badly eaten by 

 dermestids to yield measurements. 



Head: Wider than long, 2.39(2.30-2.47) :2.06(2.02-2.08); inter- 

 ocular width, 1.52(1.46-1.56); width of eye, 0.43(0.42-0.45); ocellus 

 large, separated from eye by less than an ©cellar width; clypeus 

 parallel-sided, subequal to length of juga. Antennal segments: I, 

 0.73(0.70-0.73); II, 0.82(0.80-0.83); III, IV, and V missing in all 

 specimens seen. Labial segments: I, 0.71(0.70-0.73); II, 0.85(0.83- 

 0.88); III, 0.57(0.56-0.60); IV, 0.54(0.53-0.56),. 



Pronotum: Length-width ratio, 3.67(3.57-3.75) :6.22(6.15-6.31) ; 

 posterior lobe impunctate. 



Scutellum: Length-width ratio, 4.72(4.65-4.80) :3.99(3.90-4.05); 

 impunctate. 



