22 PROCEEDINGS OF THE NATIONAL, MUSEUM vol. 74 



LISTROGNATHUS PALUDATUS (Cresson) 



Mesostenus paludatusi Cresson, Trans. Amer. Ent. Soc, vol. 4, 1872, p. 162, male. 

 Type.— No. 1185, Acad. Nat. Sci. Phila. 



Discussion based on the unique male type and a female in the 

 National Co^ection somewhat doubtfully determined by the writer 

 as this species. 



Immediately recognizable by its white frontal horn. 



Male. — The type differs from the female of agnatus in having the 

 head longer behind the eyes with the temples more strongly convex; 

 6yes widely divergent below. 



Head and thorax black; frontal horn, anterior and lower poste- 

 rior orbits, face, mouth parts, scape in front, collar, humeral margins 

 of pronotum, median spot on mesoscutum, scutellum, tegulae, subalar 

 tubercle, and a spot near lower margin of mesopleurum white; 

 flagellum black above, reddish beneath; propodeum ferruginous, 

 stained with black basajly and in apical middle, with a white mark 

 on each side of apical face; legs testaceous, front and middle coxae, 

 front trochanters, and joints 2-4 of hind tarsi white; hind femur 

 and tibia apically and basal and apical joints of tarsus black; abdo- 

 men ferruginous, tergites beyond fifth black. 



The female mentioned above, which is without locality label, is 

 of the same form and structure and abdominal coloration as that 

 of agnatus but is somewhat larger (10 mm.) with more white 

 markings. From the type of fokidatus it differs structurally in the 

 same way as does agnatus. In color it differs as follows: face 

 except a small median spot above, black ; orbits, interrupted in malar 

 space; anterior margin of pronotum and mesoscutum immaculate; 

 propodeum black, the apical face white with a large median black 

 spot, the edges of the black more or less reddish as is also the apex 

 of the metapleurum ; front and middle legs entirely testaceous except 

 for dorsal whitish spots on coxae; abdomen black with only the 

 first, and to a lesser extent the second tergite reddish piceous, second 

 and third narrowly pale reddish at apex. 



Genus CRYPTUROPSIS Ashmead 



Crypttirus Ashmead, Proc. U. S. Nat. Mus., vol. 12, 1890, p. 413, (not 



firavenhorst). 

 Crypturopsis Ashmead, Proc. U. S. Nat. Mus., vol. 23, 1900, p. 45. Genotype.— 



Crypturus texanus Ashmead. 



Head strongly narrowed behind, temples short; occipital carina 

 strongly sinuate and prominent behind cheeks, joining the hypo- 

 stomal carina far back of mandible ; f rons unarmed but with a more 



