CYDNIDAE OF THE WESTERN HEMISPHERE — FROESCHNER 601 



Length of body: 6.63(6.42-7.00). 

 Female : Very similar to male. 



Head: Length-width ratio, L21(L18-L26) : 1.74(1.71-1.80); inter- 

 ocular width, 1.04(1.01-1.13). Antennal segments: I, 0.38(0.35-0.41); 



II, 0.52(0.50-0.55); III, 0.46(0.43-0.48); IV, 0.07(0.65-0.70); V, 0.79 

 (0.78-0.83). Labial segments: I, 0.65(0.63-0.70); II, 1.03(1.00-1.06); 



III, 0.91(0.82-0.93); IV, 0.62(0.60-0.66). 



Pronotum: Length-width ratio, 1.82(1.77-1.89) :3.48(3.45-3.58). 



Scutellum: Longer than broad, 2.55(2.47-2.60) :2.25(2. 15-2.43). 



Length of body: 6.56(6.42-6.71). 



Type data. — Holotype male (USNM 64412) and allotype female 

 (USNM), La Chorrera, Panama, May 10, 1912, A. Busck. Para- 

 types, 3 males, 3 females, as follows: 



Mexico: No exact locality, No. 1785, C. F. Baker collection, 1 male (USNM). 



Panama: La Chorrera, same data as type, 1 female (USNM). Aquadulce. 

 Apr. 12, 1941, 1 male, 1 female (MCZ), Anc6n, Canal Zone, April 1911, Kraft, 

 arc-light globe, 1 male, 1 female (RCF). 



Discussion. — The specific name alludes to the vague, cuplike im- 

 pression near the apex of the head. As is often the case with Cyd- 

 nidae, the only habit notes refer to specimens having been collected 

 at a light. 



Dallasiellus (Dallasiellus) bergi (Signoret), new combination 



Geotomus bergi Signoret, 1883, p. 36, pi. 2, fig. 145. — Lethierry and Severin, 



1893, p. 72. 

 Geocnethus bergi Horvdth, 1919, p. 246. 



Diagnosis. — Among the large species of the subgenus this one may 

 be recognized by the low prosternal carinae and the numerous coarse 

 punctures on the pronotum. 



Description. — ^Based on broken female type without antennae or 

 legs. Oval, broadest at midlength of the hemelytra. 



Head: Length-width ratio, 1.43:2.25; interocular width, 1.36; 

 anterior outline a flattened semicircle, clypeus as long as juga; latter 

 impunctate, with a few radiating vague rugae, submargin with three 

 coarse, preocular setigerous punctures followed apically by a row of 

 finer setigerous punctures; ocelli moderate, removed from eyes by a 

 space equal to twice an ocellar width; jugum ventrally and maxillary 

 plate impunctate; antennae missing; bucculae about as high as labial 

 II, evanescent posteriorly; labium reaching base of abdomen. Labial 

 segments: I, 0.86; II, 1.36; III, 1.23; IV, 0.84. 



Pronotum: Length-width ratio, 2.52:4.77; anterior margin 

 moderately deeply emarginate; lateral margin straight on basal two- 

 thirds, distinctly curved anteriorly, submargin with six setigerous 

 punctures; transverse impression postmedian, obsolete, with numerous, 



