XOTOTRACHYS. 397 



Tribe NOTOTBACHIDES. 

 Genus NOTOTRACHYS, MarsJi. 



Nototrachys, Marshall, Trans. Ent. Soc. Lond. 1872, p. 260. 

 Tracliynoius, Gravenhorst (nee Latr.), Iclm. Eur. iii, 1829, p. 713. 



GENOTYPE, Oplnon foliator, F. 



Head posteriorly dilated ; clypeus more or less discrete basally, 

 apically subimpressed on either side and bituberculate ; mandibles 

 with teeth of unequal length ; eyes oval and internally sub- 

 emarginate. Antennae slender and shorter than the body. Thorax 

 scabrous, with the metathorax rugose ; spiracles minute and 

 oblong. Scutellum laterally carinate throughout. Abdomen 

 slender, petiolate and compressed, with the two basal segments of 

 equal length, spiracles of the first beyond its centre, and the third 

 segment shorter: terebra exserted, with the valvulse apically 

 clavate. Tibiae somewhat stout, with the anterior unicalcarate ; 

 claws only sparsely pectinate basally. Wings short, with na 

 areolet ; second recurrent emitted from the evenly curved first 

 cubital cell. 



Range. World-wide. 



The generic characters may be regarded as representing those 

 of the tribe, since but one genus is at present known from India, 

 though Euc/nomus, Forst. (Terh. pr. Eheinl. 1868, p. 147), 

 differing in its basally areated metanotum and the second recurrent 

 being emitted beyond the submarginal nervure, has been recorded 

 by Tschek (Verb., z.-b. Ges. 1871, p. 67) from Asia Minor. 



Ten American and three European species of this genus have 

 been described. It differs from all species of OPHIOXIDES in its 

 very short antennae and scabrously rugulosemesonotum. Bridgman 

 and Fitch very correctly regard this (Entom. 1884, p. 180) as a 

 group of transition between the OPHIONIDES and the ANOMALIDES, 

 with tendencies to a closer connection with the latter tribe, to 

 which it was first relegated by Holmgren (Ofv. 1858, p. 322). 

 I have recently shown (Eevis. Ichn. Brit. Mus. 1912) that it can 

 hardly be regarded as distinct from the former, since transitional 

 forms occur in the Neotropical Eegion. 



Table of )> 



1 (2) Metanotum and mesopleurae dull and 



scabro-reticulate .................. foliator, Fab. 



2 (1) Metanotum and mesopleurae with inter- 



stices glabrous .................. variistriatm, Mori. 



294. Nototrachys foliator, F. 



Option foliator, Fabricius, Ent. Syst., Suppl. 1798, p. 239; 



Blanchard, Hist. Nat. Ins. iii, p. 326. 

 Bassvs foliator, Fabricius, Syst. Piez. 1804, p. 100 ; Gravenhorst^ 



Germ. Mag. Ent. 1821, p. 271 ($ ?). 



