60 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxih 



at tip only, or in nialc not at all tbickent-d, longer than the three 

 prerc'ding joints?, in male longer than the second; onyehiuni not 

 unuHually tleveloped (392) Zaglypta Forster. 



Tribe V. XORIDINI. 



lS59-(iO. Xorklcs, Snbfamily, IIoi,M(iiiEN, Kongl. Vets.-Akad. Hand!., Ill, p. H. 

 1868. Xoridoidiv, Fanuly 18, Foustku, Verh. d. naturli. Ver. pr. Rheinl., XXV, 



pp. 142 and 168. 

 1894. Xoridini, Tribe IV, Ashmead, Proc. Ent. Soc. Wash., Ill, p. 278. 

 1900. Xoridl))i, Tribe V, Ashme.u), Smith's Insects of New Jersey, p. 575. 



'lliis tribe is distinguished l)y the shape of the head, which is quad- 

 rate, the temples being broad, and by the peculiar mouth opening, 

 formed 1\y the projecting mandibles and the concave or depressed cly- 

 peus, somewhat similar to the mouth opening found in Wesmael's 

 division CyeJostontl in the family Braconidce. 



I have included in the tribe the genera Echtkrus and jV^i/.xeoj)/i/Iu.^, 

 which most authorities place in the subfamily Cin^ptlnie^ and which 

 seem to form a transition between them and the Pimj^lina'. They are 

 placed here on account of the position of the spiracles of the first 

 abdominal segment, which are placed at or a little hefore the middle, 

 and not l>eijond the middle, as in all genuine Cryptines. The inflated 

 front tibiiv, too, is a character frequently found in this group and rare 

 in the Cvypt'tm^. 



Th(> group, as a whole, seems to confine itself to attacking the \\\x\-x 

 of wood-boring Coleoptera. 



Twentv-four genera have been placed here, distinguished as follow s: 



TABLE OF (;ENER.\. 



Areolet in front wings wanting, or small, triangular, or rhomboidal, never large or 

 pentagonal 6 



Areolet in front wings large, pentagonal, or at most snbtriangular or snbtrapezoidal; 

 anterior tibiai in female usually inflated, constricted at biuse; abdo- 

 men petiolate or subpetiolate 2 



2. Transverse median nervureiu hind wings broken Jar below the middle; disco- 

 cubital nervure in front wings not broken by a stump of a vein. . 4 

 Transverse median nervure in hind wings broken id or a little a^/orf the middle; 

 disco-cubital nervure l)roken by a stump of a vein. 

 Transverse median nervure in front wings interstitial with the basal 

 nervure, the median and sul)median cells therefore of an equal 



length 3 



Transverse median nervure in front wings originating heforr the basal 

 nervure, the submedian cell therefore shorter than the meilian; 

 metathorax with two transverse carinse, the spiracles long oval; 

 dorsal carinse of first abdominal segment distinct to near the apex. 



(393) Nij.rcophdus Forster. 



H. Metathorax exareolated, at most with only one transverse carina — the apical; 



spiracles linear; dorsal carina of first abdominal segment wanting 



or indicated only at bas^e (394) Echthrus Gravenhorst. 



4. Head transverse, the temples narrow 5 



Head quadrate, the temples broad. 



