434 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 57. 



The three species of this group are very closely allied and it may be 

 that with more material so much variation will be found that the 

 color characters used in distingishing them will prove unreliable. 



XORIDES AUSTRALIS (Cresson). 



Xylonomus australis Cresson, Trans. Amer. Ent. Soc, vol. 3, 1870, p. 167. 



Type. — ^No. 1520.1, Acad. Nat. Sci. Phila. Notes from type, para type 

 and specimen listed below. 



Louisiana, Texas (Cresson); Hondo, Texas, "on Cassia^' June 

 3, 1909, (J. D. Mitchell). 



XORroES PICEATUS (Rohwer). 



Xylonomus stigmapterus Say, Howard, Insect Book, 1904, pi 9, fig. 2. 

 Xylonomus (Maerophora) piceatus Rohwer, Proc. U. S. Nat. Mus., vol. 45, 1913, 

 p. 357. 



Type. — Cat. No. 15370, U.S.N.M. Type is only specimen known. 

 Dade County, Florida (Schwarz) . 



XORroES HUMERALIS (Say). 



Anomnlon humerale Say, Contr. Maclur. Lye. Phila., 



vol. 2, 1828, p. 74. 

 Xorides hunuralis (Say) Say, Boston Journ. Nat. Hist., 



vol. 1, pt. 3, 1836, p. 223. 

 Xylonomus lavalensis Provancher, Nat. Canad., vol. 

 6, 1874, p. 59. 



Fig. 3.— propodeum of Xylonomus humeralis (Sa.y) Provancher, 'N&t.C&na.d., 



Xorides piceatus vol. 12, 1880, p. 100. 



(Rohwer). ' o > • ^ i t-> i i 



lype. — bays type is lost and rrovancher s 

 type is a female labeled as humeralis with yellow label 517 in the 

 1877 Provancher collection in the Public Museum, Quebec. Neotype 

 of humeralis is in the Academy of Natural Sciences, Philadelphia, 

 determined by Cresson. Notes from neotj'pe of Jiumeralis, type of 

 lavalensis, and specimens listed below. 



Indiana (Say) ; Quebec (Provancher) ; Ontario (Harrington) ; Ithaca, 

 New York (Banks); Falls Church, Virginia (Banfe); Mount Gray- 

 beard, North Carolina (Banks) ; Texas (Belfrage) ; Plummer's Island. 

 Maryland (Hopkins); Wayland, Massachusetts (Craighead). 



Host. — Phymatodes varius and a Cerambycid in box elder. From 

 rearings by Branch of Forest Insects, Bureau of Entomology. 



Group HAITDAE. 



Group characters. — Rather stout species. Facial quadrangle some- 

 what longer than v\-ide; frons transversely wrinkled; vertex with sepa- 

 rate punctures; posterior orbits transversely striate; antennae of the 

 male without long hair; angles of the pronotum not especially prom- 

 inent; prescutum depressed in the middle; scutum and prescutum 

 wrinkled medianly, punctured laterally; propodeum rather short, its 

 surface punctured or coriaceous, not prominently angulate; the basal 



