Mar., 1922 new hymenopterous parasite 141 



Superfamily Ichneumonoidea. 



Family Braconid^. 



Subfamily Liophronin.e. 



Syrrhizus diahroticce, new species. 



This species does not fully agree with the characterization 

 of the genus Syrrhizus Foerster, which is said to have the first 

 cubital and first discoidal cells confluent and the notauli 

 entirely effaced. In the present species the first abscissa of 

 cubitus is only partially obsolete and the notauli are not com- 

 pletely effaced, being represented by a short groove at each 

 lateral anterior angle and a deep dimple-like median fovea or 

 depression near the posterior margin of the mesoscutum. 

 It is apparently intermediate between Syrrhizus on the one hand 

 and both Centistes Haliday and Leiophron Nees on the other, 

 but agrees better with the former than with either of the latter. 

 Considering the evident intergradation of the characters cited, 

 it seems more reasonable to place it in Syrrhizus than to erect 

 a new genus for it at this time. 



Female. — Length 2.2 mm. Head viewed from above transverse, a 

 little more than one and one-half times as broad as long, flattened in 

 front and rounded behind, the occipital carina complete and far below 

 the vertex; frons, vertex, occiput and posterior orbits smooth and 

 polished; viewed from in front the head is very slightly broader than 

 high, subtriangular in outline, convexly rounded above and subtruncate 

 below; inner margins of the eyes nearly parallel, a little divergent 

 below; malar space slightly shorter than the width of mandible at 

 base; face hairy and shining, with a longitudinal swelling medially, 

 and very finely and obscurely punctate laterad of the median ridge; 

 antennae inserted a little above the middle, 24-jointed, the basal joints 

 approximately three times as long as broad, apical joints about twice as 

 long as broad; mesoscutum perfectly smooth and polished, with the 

 notauli effaced except for a short groove at each lateral anterior angle 

 and a deep median fovea near the posterior margin; disk of scutellum 

 smooth and small, with the transverse groove between it and the mesos- 

 cutum very broad and divided in the middle by a single longitudinal 

 carina; lateral face of scutellum strongly rugose; metanotum longitudi- 

 nally striate ; propodeum rugulose except at anterior middle, with a median 

 longitudinal carina on the anterior half and a distinct transverse carina 

 extending completely across the sclerite a little behind the middle, the 

 posterior face with several irregular longitudinal raised lines; spiracles 

 small and round; mesopleura mostly smooth with the groove shallow 

 and more or less weakly foveolate or rugulose; stigma of forewing 



