NO. 1794. HYMENOPTEBA FROM FORMOSA— ROHWER. 4gl 



ocelloccipital or ocellocular line; occiput not emarginate, slightly 

 margined; scape not especially large, cylindrical; pedicel longer than 

 wide, constricted in the middle; flagellar joints very long and the 

 apical ones gently arcuate, first slightly longer than second, apical one 

 subequal with the preceding; pronotum with a broad cephal-caudad 

 depression, arcuate posteriorly hardly half as long as the mesonotum; 

 scutellum prominent, longer than wide; metanotum (postscutellum of 

 authors) tuberculate in the middle; propodeum with transverse wrin- 

 kles, the spiricals narrow elongate, oblique, no longitudinal furrow, 

 truncate posteriorly and the lower lateral angles when seen from the 

 sides dentate; legs long, feebly spined, claws with a very long basal 

 tooth; abdomen about the same length as the thorax, subcompressed, 

 second dorsal segment longer than wide, apical segment with long 

 hairs; submedian cell of the anterior wing distinctly longer than the 

 median; cubital cells large, the third shorter on the radius than the 

 second, and but little longer than the distance from the second trans- 

 verse cubitus to the second recurrent nervure; submedian cell of the 

 posterior wings distinctly shorter than the median. Black with a 

 purple tinge to the abdomen; mandibles (apices piceous), cl}^eus, 

 orbits (slightly interrupted above and nearly meeting on the occiput), 

 pronotum, tegulae, and legs below middle of femora reddish-yellow; 

 seven basal joints of the antennae reddish-yellow, the apical joints 

 brown; mesonotum, pronotum, and head somewhat with reddish- 

 yellow pile. Wings reddish-yellow, covered with hairs, the apical 

 margin dusky and without hairs; venation reddish-yellow. 



Paratype is slightly smaller and has the submedian cell of the 

 hind wings subequal with the median. 



Type-locality. — Horisha, Formosa (T. Fukai). 



Type.— C&t. no. 13375, U.S.N.M. 



PSAMMOCHARES (Entypus) FORMOSENSIS, new species. 



In Colonel Bingham's table to the species of Pompilus of British 

 India this species runs near to ariadne Cameron and limbatus Smith, 

 but does not agree with the description of either. Entirely black 

 with silvery bands on the abdomen; wings strongly dusky. 



Male. — Length 12 mm. Labrum distinctly excerted, the excerted 

 part about as long as the width of the mandibles at the base; clypeus 

 very gently arcuate; a fine impressed line from the anterior ocellus 

 to base of antennae; head, clypeus, labrum, and base of mandibles 

 gently, irregularl}^ scratched; postocellar line fully twice as long as 

 the ocellocular line, and nearly twice as Ion J as the ocelloccipital line; 

 pedicel longer than wide, very indistinctly separated from the first 

 joint of the flagellum; first joint of the fiagellum slightly shorter than 



Proc.N.M.vol.39— 10 33 



