438 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 57. 



Host — ^According to many rearings by Branch of Forest Insects 

 Bureau of Entomology, this is a common parasite of Saperda discoidea 

 in hickory and probably occurs throughout the range of its host. 



XOBIDES DUPLICATUS (Rohwer). 



Xylonomv^ (Moerophora) dupUcatus Rohwer, Proc. U. S. Nat. Mus., vol. 45, 

 1913, p. 356. 



Type.— C&t. No. 15369, U.S.N.Mt 



This is known only from a unique male and is probably nothing 

 more than a specimen of albopictus with abnormal aerolation of the 

 propodeum, but inasmuch as none of the many specimens of albopic- 

 tus show any such variation it is probably best to retain the name 

 for the time being. 



Clark Station (near St. Louis), Missouri. 



Group CAilDtrS. 



Group characters. — Facial quadrangle broader than long, with dis- 

 tinct close punctures; posterior orbits shining above, obliquely 

 striate below; postocellar line distinctly longer than the ocellocular 

 line; antennae of male with short hair; angles of pronotum not promi- 

 nent; scutum and prescutum opaque, with close poorly defined punc- 

 tures; propodeum rather closely punctured, carinae strong, angles 

 not prominently dentate; basal area and areola confluent; first 

 tergite of female about twice as long as apical width, ^^ith distinct 

 median carinae which are complete in the male but end before apex of 

 segment in female; second tergite of female wider than long; base of 

 third tergite of male without depressed areas laterally; tergites 

 coriaceous or granular; nervulus slightly postf ureal; nervellus per- 

 pendicular broken at middle; ovipositor shorter than abdomen. 

 Black; head and thorax with yellow markings; posterior orbits \vith 

 a yellow spot; abdomen reddish in female black in male without mark- 

 ings antenna of female with an annulus, of male black; wings hyaline. 



XORIDES CALIDUS (Provancher). 



Xylonomm calidus Provancher, Addit. faun. Can. H}-m., 1886, p. 119. — Har- 

 rington, Can. Ent., vol. 23, 1891, p. 134. 



Xylonomm pulcher Ashmead, Proc. U. S. Nat. Mus., vol. 12, 1889, p. 450. — Har- 

 rington, Can. Ent., vol. 23, 1891, p. 134. 



Aplomerus nasonii Davis, Trans. Amer. Ent. Soc, vol. 22, 1895, p. 32. 



Type of calidus.— One female with blue label with large figures 596 

 and name label, in second Provancher collection Public Museum, 

 Quebec. 



Type of pulcher.— C&t. No. 2120, U.S.N.M. 



Type of nasonii. — Academy of Natural Science, Philadelphia. 

 Notes from types and specimens listed below. 



