ITI SPHEGlD.f:. 



417. Pison agile. 



Parapison agilis, Smith, Trans. Ent. Soc. 1869, p. 300, 9 . 

 Pison agile, Kohl, Verh. zool.-bot. Ges, Wie7i, 1884, p. 186; Ccun. 

 Meyn. Manch. L. Ph. Soc. (4) ii, 1889, p. 117. 



2 . Closely resembles P. erj/throjms, Kohl, but is a larger, more 

 stoutly built insect, with the legs piceous browu, not red, and 

 differs also in the eyes being more convergent at top, the scu- 

 tellum and postscutellum being divided by a medial longitudinal 

 very shallow furrow ; the median segment is slender, with a steeper 

 slope to the apex, and the abdomen is much larger and broader. 



Hah. Ceylon. $. Lenyth 9-10; exp. 11-20 mm. 6 slightly 

 smaller. 



418. Pison obliteratum. 



Pisonoides obliteratus, Smith, Jour. Linn. Soc. 1858, p. 104, $. 

 Parapison obliteratus, Synith, Tr. Ent. Soc. 1869. p. 299. 

 Pison obliteratum, Kohl, Verh. zool.-bot. Ges. Wien, 1884, p. 187; 

 Cam. Mem. Manch. L. Ph. Soc. (4) ii, 1889, p. 117. 



2 S . Head, thorax, and median segment finely but not 

 very closely punctured: abdomen highly polished, shining; the 

 whole head, thorax, and abdomen covered with 

 a thin erect pubescence ; the clypeus, the emar- 

 gination of the eyes, and transverse bands on the 

 posterior margins of abdominal segments 2-4 

 with dense silky pile, the last only observable in 

 certain lights ; median segment rounded pos- 

 teriorly, with a steep slope to the apex, a trian- 

 gular depressed space at base, bearing coarse 

 Fig. 55.— Pison ob- oblique striations, from which a deep furrow runs 

 literatum, 5- 1- to the apex of the segment, the furrow with a 

 few coarse transverse striae ; abdomen with the 

 base of the 1st segment narrowed, almost petiolate, the apex 

 deeply constricted. Black, the abdomen with an obscure chaly- 

 beous tint, the apical margins of segments 2-4 testaceous ; the 

 thin erect pubescence whitish, the pile on the clypeus and abdo- 

 minal bands silvery ; wings hyaline, nervures and tegulse brownish 

 testaceous. 



Hah. Kumaun, North India ; Maulmain, Tenasserim ; Borneo. 

 5 S . Length 8-9 ; exp. 15-16 mm. 



Genus TRYPOXYLON. 



Sphex, pt., Linn. Syst. Nat. ed. x, t. i, p. 569 (1758). 

 Trypoxylon, Latr. Precis Caract. Gen. Ins. p. 121 (1796). 

 Apius, Jurine, Hym. \, p. 140 (1807). 



Tvpe, T.Jigulus (Linn.). 



Range. Both hemispheres. 



Head as wide as the thorax or a little wider ; mandibles 

 small, when closed concealed beneath the clypeus, their outer 

 margin not incised ; eyes more or less convergent below, their 



