PHILANTHOCEPHALTJS. 89 



Head shining, almost impunctate, covered with long fuscous, the face with golden, 

 hair. Vertical furrow wide and deep, of nearly equal width throughout. Clypeus 

 convex, rounded at the apex. Below the antennae (including the mandibles) the head 

 is entirely clear yellow ; the scape is yellow beneath ; the flagellum broadly fulvous. 

 Antennae stout, not attenuated towards the apex ; the third joint one quarter longer 

 than the fourth. Thorax shining, sparsely punctured; the fovea on the median 

 segment elongate, twice as long as broad; the apical furrow wide, deep; a line 

 on the pronotum, the tubercles, a mark behind them, the tegulae, four marks on the 

 scutellum, the metanotum, and two large marks on the median segment, clear yellow. 

 Petiole nearly as long as the second, third, and fourth abdominal segments united; a 

 mark on either side of the petiole at the apex, the second segment somewhat broadly 

 at the apex, and the other segments more narrowly, yellow. Pygidial area with some 

 scattered punctures. The anterior coxae and trochanters, the middle coxae and 

 trochanters narrowly beneath, the femora, tibiae, and tarsi, clear yellow; the anterior 

 and middle femora at the base above, the posterior femora above and entirely at the 

 base, the posterior tibiae behind, and the apices of the tarsal joints, black. 



B. Hind wings with the anal nervure received beyond the posterior transverse nervure. 



(Species 4 & 5.) 



4. PhilanthocephalllS mexicanUS. (Tab. VI. figg. 5, head from in front, 5 a, 

 trophi, 6 ; 5 b, male organ ; 6, ? *.) 



Niger, thoraee flavo-maculato ; fronte leviter rugosa ; vertice punctata ; apice segmento mediali punctata ; 



abdominis apice flavo aut fulvo ; alis fusco-hyalinis. $ S • 

 Long. $ 14-17, 6 10-12 millim. 



Hab. Mexico, Tierra Colorada 2000 feet, Eincon 2800 feet, Kio Papagaio 1200 feet, 

 Chilpancingo 4600 feet, all in Guerrero (H. H. Smith), San Bias in Jalisco, Atoyac in 

 Vera Cruz (Schumann), Temax in North Yucatan (Gaumer). 



Hinder ocelli separated from the eyes by a space equalling the length of the third 

 antennal joint, and from each other by the length of the fourth. Clypeus roundly 

 projecting, but not semicircular at the apex, being there too sharp. The vertex is 

 sparsely and finely punctured; the front is more opaque and closely striolated; the 

 clypeus is finely punctured. The apical ocellus is in a pit, and a fine furrow runs down 

 from it, ending in an oblong fovea between the antennae. The vertex has a plumbeous 

 hue ; the clypeus is yellow, the yellow being prolonged above in the middle to near 

 the base of the antennae, the prolongation being sharply rounded. The mandibles are 

 striolated, yellow, and finely punctured at the base. The palpi are testaceous. The 

 mesonotum has a plumbeous hue, and is shining, sparsely and finely punctured ; the 

 pleurae are still more closely, and the median segment (except at the base, which is 



* By an oversight, the numbers at the bottom of the Plate are given as 5, 5 a, b $ : they should be 5, 5 a, 



biol. cente.-amer., Hymenopt., Vol. II., June 1890. nn 



O 'O 



