104 HYMENOPTEKA. 



Eab. Mexico, Jalisco {Schumann) ; Guatemala, Teleman in Vera Paz (Champion). 



Antennae thickened gradually to the apex ; the third joint about one quarter longer 

 than the fourth ; the third to the sixth joints longer than broad, the seventh to the 

 eleventh broader than long ; the eleventh with a thin curved spine, reaching to the 

 apical fourth of the twelfth, projecting from the apex on the underside ; the twelfth 

 joint twice the length of the eleventh, curved broadly on the underside ; the thirteenth 

 beak-shaped, ending in a sharp spine. Head punctured, densely covered with stiff 

 fuscous hair ; the clypeus with a silvery pile ; ocellar region not raised ; the anterior 

 ocellus with a black dilated mark in front and to the posterior ocelli a black oblique 

 line runs from the eyes ; occiput black ; clypeus convex ; apex of the labrum subtrans- 

 verse. Thorax shining, punctured, bearing short fuscous hair ; a broad central black 

 line and two shorter lateral ones on the mesonotum; scutellum with the extreme 

 base black, the black projecting in the centre as an irregular mark (sharp at the 

 apex) nearly to the middle; median segment edged with black. Abdomen stout, 

 shining, punctured, the segments edged with black ; the apical three ventral segments 

 also black. Legs stout, the femora and tibiae thickened ; the tibiae sparsely spined, the 

 posterior pair with a narrow black line behind. The first transverse cubital nervure 

 straight, elbowed sharply before the middle. 



/ B. Second cubital cellule not appendiculate. 



4. Stizus moneduloides. 



Larra moneduloides, Smith, Cat. Hymen. Ins. iv. p. 346 \ 



Hob. Noeth Ameeica, Florida 1 . — Mexico, Presidio (Forrer), Teapa in Tabasco (H. H. 

 Smith) ; Guatemala, San Geronimo (Champion). 



Pam. PHILANTHID-ZE. 



This well-marked and beautiful family of insects is fairly well represented in Mexico ; 

 but apparently the species become less numerous southwards. 



APHILANTHOPS. 



Aphilanthops, Patton, Proc. Bost. Soc. Nat. Hist. xx. p. 401 (1880). 



In the second cubital cellule not being appendiculate this genus agrees with Philan- 

 thus ; but differs from it in having the eyes entire and the antennae inserted above the 

 middle of the face, and also in having the hypopygium margined and forming a well- 

 marked area as in Cerceris. 



Two North-American species have been described. 



