1918] Alydince of the United States 259 



Cydamus Stal. 

 Haplotype adspersipes Stal. 

 Cydamus Stal (1860) 33, (1867) 542,' (1870) 216, (1873) 88; Distant (1881) 159. 



The only member of this South American genus found north 

 of Mexico is the species listed below. In form and general 

 appearance there is a close resemblance to Darmistus, although 

 the antennal lengths indicate a similarity to Protenor. The 

 armed scutellum distinguishes from all other Alydinae. 



3. Cydamus borealis Distant. 



.Cydamus :>orealis Distant (1881) 159; Snow (1906a) 151. 



Description. — Pale ochraceous, punctured with fuscous, dark 

 punctures in longitudinal rows. Antennas with first and fourth seg- 

 ments subequal in length, each as long as second and third together. 

 Pronotum with a slender spine at each lateral angle and scutellum 

 with an acute spine at apex. 



Size 8-9 X 1.5 mm. 



Snow has reported the collection of this Central American 

 form in Texas. No material is at hand. 



Esperanza Barber. 

 Haplotype texana Barber. 



Esperanza Barber (1906) 269. 



Cydamus. subgenus Esperatiza, Bergroth (1913). 



A genus erected for E. texana on the basis of the following 

 characters: Juga not attaining the tip of the broad tylus; 

 rostrum as in other Micrely trini ; pronotal angles rounded, 

 unarmed; posterior angles of metapleura not acute, but forming 

 a right angle as in Alydus; femora unarmed. 



4. Esperanza texana Barber, 



Esperanza le.xana Barber (1906) 270. 



Description. — Head mottled with fuscous; antennas yellow, first 

 segment short, spotted with fuscous, second and third subequal, longer 

 than first and more faintly marked, fourth fuscous except at base and 

 apex; rostrum with first segment thickened, yellow, spotted. Pro- 

 notiun with mediodorsal raised smooth line. Membrane fuscous. 

 Legs long and slender, yellow, spotted with fuscous. 



This description is an abstract of Barber's, as the species, 

 based on one male from Brownsville, Texas, has not been seen 

 by the writer. 



