154 PROC. ENT. SOC. WASH., VOL. 23, NO. 7, OCTOBER, 1921 



1. (Acaenitus) Arotes decorus (Say). 



Acaenitus decorus Say, Boston Journ. Nat. Hist., vol. I, 1835, p. 248 (Leconte 



ed., vol. 2, p. 702). 

 Arotes decorus Cresson, Trans. Am. Ent. Soc., vol. 4, 1872, p. 164; Rohwer, 



in Cushman and Rohwer, Proc. U. S. Nat. Mus., vol. 57, 1920, p. 516. 



2. (Acaenitus) Arotes melleus (Say). 



Acaenitus melleus Say, Boston Journ. Nat. Hist., vol. 1, 1835, p. 249 (Leconte 



ed., vol. 2, p. 703). 

 Arotes melleus Rohwer, in Cushman and Rohwer, Proc. U. S. Nat. Mus., vol. 



57, 1920, p. 516. 



3. (Acaenitus) Xorides stigmapterus (Say). 



Acaenitus stigmapterus Say, Long's Second Exped., Phila., 1824, p. 325 (Leconte 



ed., vol. 1, p. 218). 

 Xylonomus stigmapterus Cresson, Trans. Am. Ent. Soc., 1870, p. 167; Walsh, 



Trans. Ac. Sci., St. Louis, vol. 3, 1873, p. 153 and 165. 

 Xorides stigmapterus Rohwer, Proc. U. S. Nat. Mus., vol. 57, 1920, p. 444. 



4. (Agathis) Ceratogastra ornata (Say). 



Agathis ornata Say, Boston Journ. Nat. Hist., vol. I, 1835, p. 226 (Leconte ed., 



vol. 2, p. 684). 



Ceratosomafasciata Cresson, Proc. Ent. Soc., Phila., vol. 4, 1865, p. 283. 

 Ceratosoma rubyata Davis, Trans. Am. Ent. Soc., vol. 24, 1897, p. 366. 

 Ceratogastra (fasciata) Ashmead, Can. Ent., vol. 32, 1900, p. 368. 

 Ceratogaster Jasciata Dalla Torre, Cat. Hym., 1891, p. 62. 

 Ceratogaster rubyata Dalla Torre, loc. cit. 



The color and color pattern of the head, thorax, and pro- 

 podeum in this and the following species point unmistakably 

 to Ceratogastra. Davis's name is based on a cyanide stained 

 specimen. 



Neotype. A female without data. 



5. (Agathis) Ceratogastra polita (Say). 



Agathis polita Say, Boston Journ. Nat. Hist., vol. 1, 1835, p. 226 (Leconte ed., 

 vol. 2, p. 684). 



Possibly an unusual variant of ornata but since we have no 

 specimen that agrees in all particulars with Say's description, 

 we hesitate to synonymize the two species. If synonymy is 

 proved polita will be the name to apply to the species since it 

 has line precedence. 



6. (Anomalon attractus Say) = Diplazon laetatorius (Fabricius). 



Ichneumon laetatorius Fabricius, Spec. Ins., vol. 1, 1781, p. 424. 

 Bass us laetatorius Panzer, Kfit. Revis., vol. 2, 1806, p. 74. 



