b PROCEEDINGS OF THE NATIONAL MUSEUM vol.74 



AGONOCRYPTUS, new genus' 



Closely related to the Neotropical Monogonocryptus Viereck and 

 Digonocryptus Viereck, but both of those genera have the spiracle of 

 the first abdominal segment behind the middle, the nervulus nearly 

 or quite interstitial, and the clypeus apically more or less distinctly 

 dentate, Monogon.oanjptus with ctfie tooth and Digonocrijptus ^ with 

 two teeth. Otherwise these two genera agree very well with the 

 following description of Agonocryptus. 



Clypeus inflexed apically and very broadly truncate, mutic ; labrum 

 broadly exposed ; mandibles with lower tooth larger and longer than 

 upper; head narrowed behind eyes, temples narrow, cheeks swollen 

 and much broader than temples ; eyes large and prominent ; antennae 

 long and slender filiform, scape deeply, obliquely truncate ; flagellum 

 in female slightly flattened in about the basal half, bas^ joints very 

 long, others successively shorter, apical joint truncate at apex; 

 thorax subcylindrical ; notauli deep anteriorly, disappearing in a 

 roughly sculptured area in middle of mesocutum; scutellum weakly 

 convex, not margined; sternauli distinct, propodeum long, with two 

 transverse carinae widely separated, without longitudinal carinae or 

 apophyses, roundly sloping from basal carina, spiracles broadly oval ; 

 legs not especially slender, front tibia in female inflated, and basally 

 constricted; hind tibia nearly or quite a half longer than femur, 

 longer calcarium not reaching middle of basitarsus, tarsus distinctly 

 shorter than tibia, apical joint in female hardly as long as second, in 

 male but little longer than fourth ; stigma very narrow, radius before 

 middle; discoidal cell not conspicuously narrowed at base; areolet 

 small pentagonal, rather longer than high, intercubiti parallel, sec- 

 ond intercubitus obsolete, recurrent at or slightly beyond middle; 

 nervulus distinctly antef ureal, perpendicular to medius; nervellus 

 sharply broken, strongly reclivous, its upper abscissa perpendicular 

 to mediella; abdomen in female lanceolate, in male narrowly sub- 

 clavate and not apically compressed, sx)iracles of first segment before 

 middle; in female, first segment stout, decurved, with a blunt tooth 

 on either side below near base, seventh tergite fully as long as third ; 

 eighth prominent and scoop-shaped; hypoygium far before apex; 

 ovipositor much shorter than abdomen, deep and bladelike. 



Genotype.— Mesosterius discoidaloides Viereck. To this genus also 

 belong the following Netropical species : 



» o-yo«'ia=without angle, referring to the lack of a tooth on margin of clypeus, by which it is distin- 

 guished from some of its closest relatives. 



* To this genus, in addition to the genotype, belong the following Neotropical species : 



(Mesostcnus) Digonocryptus tarsatus (Cresson) (new combination). 



(Mesostenus) Digonocryptus grenadensis (Ashmead) (new combination). 



(Mesostenus insularis Ashmead, not insularis [Cresson] Ashmea.A) = (Mesostenus) 

 Digonoc7-yptus cressonii (Ashmead) (new combination). 



