CHARLES W. HOOKER. 117 



plate of the latter shows the plate on the abdomen colored 

 ferruginous, and the distribution corresponds. 



Distributio7i. — This species ranges from Orizaba, Mexico, 

 at 19° to below the equator at Chauchamayo, Peru. It has 

 been taken at Chiriqui and Orizaba, Mexico ; in Guatemala, 

 at Zapote and Senahu ; in Honduras ; in Panama, at Chiri- 

 qui ; in Colombia at Canauche, in the State of Cundinamarca, 

 etc. ; in Peru at Chauchamayo and in Costa Rica. 



Location of specimens. — American Entomological Society, 

 9 type. No. 7, Mexico, end of abdomen gone. U. S. Na- 

 tional Museum, two 9 's, Chauchamayo, Peru ; Mexico. 

 British Museum, 9 type of T. principalis Sm. and specimens. 

 Massachusetts Agricultural College, 9 and cf, homotypes, 

 Colombia ; Chiriqui, Panama. 



Thyreodon zoiiatus Szep. 

 Thyreodon zonatus^zQ'gWZ'&XX, Ann. Hist. Natur. Mus. Nat. Hung., 



IV, p. 134 1906. 



Black ; wings brown ; the third and fourth abdominal segments fer- 

 ruginous. 



Length, 35 mm. 



Black ; head smooth, not enlarged behind the eyes ; face, frons and 

 vertex rugose ; antennal fossae not bordered ; mesopleurae smooth ; 

 metathorax rugose behind, sides coarsel}' rugose, median furrow shal- 

 low, wings brown ; nervulus interstitial ; nervellus broken above the 

 middle ; abdomen with the third and fourth segments ferruginous 

 (gelbroth), the second segment shorter than the first. 



I have not seen a specimen of this species, and can only 

 give a free translation of the original description somewhat 

 rearranged. 



Types. — 9 and cf. Hungarian National Museum. 



This species is closely related to T. laticinctus and may 

 prove to be synonymous, but Szepligeti distinguishes it by 

 " the mesonotutn in the latter — laticinctus — being armed in 

 front with two horny protuberances, while the fourth abdomi- 

 nal segment is not entirely ferruginous (gelbroth) and the 

 scutellum is bordered at the sides." The protuberances on 

 the mesonotum of laticinctus are quite inconstant, but the 

 color of the abdominal band is lemon-yellow, not ferrugin- 



TRANS. AM. ENT. SOC. , XXXVIII. 



