^Ir. R. E. Turner on Fossorial Ilymenoptera. 4 9 



Geuus Thynnotukneria, Roliw. 



AHolothynnus, Tiu'n. Wystman's Gen. Insect, cv. p. 39 (1910). 

 Tnnierel/a, Roliw. Ent. News, xxi. p. 349 (1910). 

 Thi/nnoturneria, Rohw. Ent. News, xxi. p. 474 (1910). 

 Eiirohiveria, Turn. Ann. & Mag. Nat. Hist. (8) \ii. (1911). 



I am by no means sure that the name ^dEolothynnus 

 sliould not be used for this genus. Ashraead in describiiijif 

 tlie genus Aioluthynmis took an undescribed species for the 

 type. In my work on the Thynnidse I accepted Ashmead's 

 genus, but treated the species as a nomen 7iudum. 

 Mr. Rohwer^ on the other hand, hokls that the description 

 of the genus covers the species also; but I cannot agree 

 with this opinion, as Ashmcad evidently did not intend the 

 description for a specific one, and a description to be 

 recognized shonld be at least intended by the author for a 

 description of a species. In some parallel cases Ashmcad has 

 actually marked the species name as MS. Unfortunately 

 A. cerceroides, Sm., selected by me as the type of the genus, 

 does not appear to belong to the same genus as Ashmead's 

 type. Yet if Ashmead's specific name is treated as a nomen 

 nudum, A . cerceroides must be treated as the type of the 

 genus. It is bad enough to have to recognize the very 

 insufficient descriptions of some authors as valid, but if we 

 are also to accept what were never intended for descriptions 

 things would be still worse. For the present, pending some 

 decision on the subject, I am using Rohwer's name, but do 

 not consider that it can stand. The whole confusion is due 

 to a want of editing in Ashmead^'s paper, as no editor should 

 publish a description of a geuus with an undescribed species 

 taken for the type. 



Thynnottirneria trimaculata, sp. n. 



S . Niger ; femoribus, tibiis segmentisque abdomiualibus sexto 

 septimoque rufo-ferrugineis ; clypeo apice lateribusque, pronoto 

 marginibus, mesonoto macula elongata, scutello macula, post- 

 scutello, segmentis dorsalibus 1-5 fascia curvata utrinque 

 maculaque bilobata mediali, segmentisque ventralibus 2-5 

 macula utrinque pallide flavis ; alis byalinis, veuis uigris, 

 stigmate testaceo. 

 Long. 9 mm. 



Clypeus strongly convex, longer than the greatest breadth, 

 truncate at the apex, with a low and rather indistinct 

 longitudinal carina near the apex. Interantennal pro- 

 minence not well defined ; antennae shorter than the thorax 

 without the median segment, the flagellum of about even 



Ann. d; Mag. N. Hist. Ser. 8. Vol. x. 4 



