ART. 16 WASPS OF THE SUBFAMILY BRACONINAE MUESEBECK 55 



propodeum and pectus usually, and in the male sex the apical abdom- 

 inal tcrgites, blackish; wings somewhat infumated; legs ferruginous, 

 with the anterior and middle coxae, all trochanters, apex, and an 

 annulus near base of hind tibiae and the hind tarsi black or blackish. 

 In addition to the types, both of which are from Colorado, I have 

 seen only four specimens, which are in the National Museum. These 

 specimens are from Colorado and Oklahoma. 



29. BASSUS GIBBOSUS Say 



Bassus gibbosus Say, Boston Journ. Nat. Hist., vol. 1, 1836, p. 250. 

 Microdus pygmaeus Cresson^, Trans. Amcr. Ent. Soc, vol. 4, 1872, p. 182. 

 Agathis scrutator Provancher, Addit. faun. Canad. Hymen., 1886, p. 137. 

 Agathis dispar Provancher, Addit. faun. Canad. Hymen., 1886, pp. 137 and 138. 

 Microdus meridionalis Viereck, Trans. Araer. Soc, vol. 29, 1903, pp. 95 and 96. 

 Microdus wichitaensis Viereck, Trans. Kans. Acad. Sci., vol. 19, 1905, p. 276. 

 Microdus castaneicinctus Viereck, Trans. Kans. Acad. Sci., vol. 19, 1905, p. 276. 



Type. — Say's type is probably lost; Cressons's type of pygmaeus 

 is in the United States National Museum ;^^ that of Viereck's meridi- 

 onalis is in the Philadelphia Academy of Science; those of scrutator 

 and dispar are in the Museum of Public Instruction at Quebec, Canada ; 

 and those of wichitaensis and castaneicinctus are in the collection of 

 the University of Kansas, 



Although Say's type of gihhosus is not available there seems to be 

 no reasonable doubt that the species here treated as gihhosus is what 

 Say had before him. The types of pygmaeus meridionalis, wichitae- 

 nsis, and castaneicinctus, all of which I have studied, certainly belong 

 to the same species, and in my opinion are gihhosus. I have not 

 seen the types of scrutator, and dispar, but the original descriptions, 

 combined with notes on the types by S. A. Rohwer, seem to leave 

 no doubt that they also are gihhosus. 



The species is most similar to tihiator, but usually is not difficult 

 to distinguish from that species. The face is nearly always distinctly 

 shorter; the third segment of the labial palpi is relatively much 

 smaller; the basal tooth of the tarsal claws is more strongly devel- 

 oped; the areolet is rarely broadly sessile; and the abdomen is nearly 

 always much more strongly sculptured than in tihiator, and is often 

 ferruginous on the second or third tergites or more. 



Face distinctly transversely convex; clypeus convex; head strongly 

 hollowed out behind; antennae slender, not tapering to the tip, 

 and usually 22 to 28 segmented; the third segment of labial palpi 

 very short and slender; parapsidal furrows sharply impressed, usually 

 finely foveolate or punctate; propodeum usually more or less finely 



•^Cresson, Mem. 1, Amer. Ent. Soe., 1916, p. 71, assigns type number 2747 to this species and records 

 the type as being in the collections of the Pliiladelphia Academy of Sciences. The specimen in the Phil- 

 adelphia Collection is, as Cresson indicates, a male and is the allotype. The holotype female is in the 

 National Museum and has been given type number 1638. The head of the holotype is wanting. — S. A. 



ROHWEK. 



