i«'6) 185 



DKSCRIPTIOX OF TWO XEW EXOTIC ACULEATE IIYMEyOPTERA, 

 OF TlIK FAMILIES TIIYNNIDJE AND CRABROHIDJE. 



BY C. RITSEMA. 



-ELUEUa FLAVO-PICTUS, Sp. rt. 



Male. Length 12 mm. ; alar expanse, 18 miu. 



Black ; tlie apex of tlio clypeus (terminating a longitudinal central carina), the 

 little lobe at the base of the cheeks, an interrupted line between the insertion of the 

 antennae (bordering on elevation), and anotlier on the anterior margin of the pro- 

 thorax, the central portion of the tegulse, the po8t-scutollum, and the apical spines of 

 the tibise and of the joints of the tarsi, pale yellow ; a spot a little before the tips of 

 the mandibles, some spots on the abdomen beneath, and the claws of the tarsi, 

 roddish-brown. 



The head and thorax closely and strongly punctui'cd, thinly covered with 

 cinereous pubescence ; head transverse, wider than the thorax, the posterior margin 

 of the cheeks fringed with long silvery hairs ; the face before the insertion of the 

 antenna; with a whitish pubescence ; the thorax attenuated behind, the scutellum 

 gibbous, the metathorax rounded ; the wings hyaline, clouded at the apex, the 

 stigma and nervures black ; the coxre, tibiro, and tarsi closely covered with short, the 

 femora thinly with long, grey pubescence ; the claws of the tarsi bifid. 



The abdomen depressed and petiolated, smooth, and shining, veiy sparingly 

 covered with fine punctures and cinereous hairs ; the first segment a little swollen at 

 the apex, the second with an impression at the base, and, as well as the four fol- 

 lowing, with two faint tubercles a little before the liind border ; the ventral scale of 

 the apical segment terminating in a trifid mucro. 



Five malea sent by the Baron vou liosonbcrg from Aru, four of 

 which are in the Leyden Museum, the fifth in Mr. F. Smith's col- 

 lection. 



In addition to this species, the ij;enus ^Jurus, K^ug {Taclnjnomia, 

 Guer.) is represented in the Eastern Archipelago by two other species, 

 viz., ^lurus co/iiifua, Smith, from Waigiou, and JElurus fragllis, Smith, 

 from ^lortai. 



PSEN ORX ATI'S, sp. 11. 



Female. Length, 10 mm. ; alar expanse, 15 mm. 



Head and thorax black, adorned with yellow ; abdomen red. 



The head black, smooth, and shining, impunctate, with a sharp ciirina between 

 the antenntc ; the face before the antenncc and the cheeks covered with silvery pu- 

 bescence ; the mandibles yellow with brown tips ; the antennao rather long and 

 slender, the scape yellow, the llagellum fuscous above, pale ferruginous beneath, 

 becoming fuscous towards the apex. 



The thorax black, above smooth and shining, with some very tine puucturea, 

 the sides somewhat opaque and, as well as the thorax beneath, thinly covered with 

 whitish hairs ; the metathorax coarsely rugose ; the prothorax yellow above, the 

 mesothorax with two parallel lines not reaching the scutellum, the tegulte, a spi.'t 

 before the base of tlie wing", two spots on the seutellura, and the post-scutellum. 



