CYDNIDAE OF THE WESTERN HEMISPHERE — FROESCHNER 461 



of mcsocorial disc; costa with two to six setigerous punctures; mem- 

 branal suture w^eakly bisinuate, lateral angle slightly produced; mem- 

 brane longer than basal width, distinctly surpassing apex of abdomen. 



Propleuron: Distinctly alutaceous, punctured only in depression; 

 prosternal carinae less than half as high as labial II, acute. 



Mesopleuron and metapleuron: As in figure 103. 



Legs: Moderately long; posterior femora not tuberculate ventrally; 

 posterior tibiae not angulate ventrally near base. 



Sternites: Distinctly alutaceous, impunctate. 



Terminalia: Genital capsule alutaceous, punctured laterally, apical 

 margin wealdy emarginate medially; gonostylus as illustrated (fig. 

 220). 



Length of body: 6.87(5.85-7.46). 



Female: Very similar to male. Head: Length-width ratio, L14 

 (0.88-1.30) :1.72(1.33-L94), Antennal segments I, 0.34(0.28-0.40); 

 II, 0.32(0.27-0.43); III, 0.40(0.30-0.46); IV, 0.47(0.34-0.56); V, 

 0.50(0.36-0.60). Labial segments: I, 0.53(0.41-0.63); II, 0.87(0.63- 

 L03); III, 0.69(0.43-0.81); IV, 0.49(0.41-0.54). 



Pronotum: Length-width ratio, 1.97(1.61-2.30) :3. 55(2.22-4.23). 



Scutellum: Length-width ratio, 2.22(1.69-2.47) :2.26(1.69-2.61). 



Length of body: 6.64(5.25-7.78). 



Type data. — Cydnus bilineatus was described by Say with the com- 

 ments "Inhabits the United States .... Not uncommon in Penn- 

 sylvania as well as in Missouri." Say's collection has been destroyed, 

 but in the T. W. Harris collection (MCZ) there are a number of 

 specimens that Say determined for Harris. Since very few Say- 

 determined specimens are stiU in existence, these generally have been 

 accepted as substitutes for the types of Say's species. Of this col- 

 lection Uhler (1878, p. 365) stated: "this collection is of especial 

 interest at the present time, because it is the only one preserved in 

 this country which contains original and authentic types of the Hemip- 

 tera described by Mr. Say." Specimen No. 135 in the Harris col- 

 lection bears the data, "Florence, Ala., January and February, 1836, 

 Prof. Hentz." Of it Uhler (1878, p. 371) wrote: "Having examined 

 the type of Dr. Fitch, I am enabled to refer it to this species." As 

 indicated by the year of the collection quoted above, this specimen 

 cannot be the original type because it was not captiu-ed until some 10 

 years after the desciption appeared. 



The location of the types of Herrick-Schaeffer's two species, Cydnus 

 Jemoralis and C. rugifrons, is not known to the author. C. Jemoralis 

 was described from "aus Lankaster [Pennsylvania?] in Nordamerika," 

 rugifrons "aus Georgian in Amerika." 



The type (BrM) of Aethus fortis was described by Walker (1867, 

 p. 151) from "Oajaca," Mexico. 



