HYMENOPTEROUS FAMILY STEPHANID.E. 755 



third and fourth of equal length and little longer than second. 

 Thorax sub-depressed, pronotum closely and finely trans-striate, 

 neck apically deeply emarginate and bifoveolate. Mesonotum 

 coarsely rugose-punctate, with antei'ior central longitudinal line 

 of punctures, a strongly cvenulate line before scvitellum, which is 

 rugose, apically subglabi'ous, alutaceous. Mesopleuife tumid, 

 scabrous, with broad and smooth posterior margin ; metapleurse 

 prominent, irregularlyscabrous. Sternum smooth and shining, very 

 finely trans-striolate, the punctate mesolcus open behind. Median 

 segment depressed, coarsely rugose-reticulate, basally laterally 

 more finely sculptured. Petiole about as long as remainder of 

 abdomen, centrally slightly incrassate, trans-striate, with smooth 

 apical margin ; second segment half as long as first, shining, 

 microscopically reticulate ; remaining segments transverse, third 

 to seventh finely and closely trans-striolate, eighth exserted, 

 coriaceous. Apical margins of ventral segments sparsely pale 

 pubescent ; hypopygium apically compressed and subacuminate. 

 Terebra shorter than body, sheaths black. Hind legs with coxae 

 trans-striolate inside ; femora bidentate, reticulate, basally exter- 

 nally smooth and shining; tibiee reticulate, half as long again as 

 femora, with a central, shining, acute-angled impression behind 

 (? constricted to middle and there impressed). Wings extending 

 beyond apex of petiole ; in foi-e wing, stigma nearly five times as 

 long as its bi'eadth, costa not extending beyond it ; in hind wings 

 the costa extends to within a third of the apex of wing. 



Black; basal half of flagellum, a straight line on cheeks from 

 base of mandibles, touching the eyes, to the temples — not reach- 

 ing the posterior margin of temples — apices of coxse, trochanters 

 partly, extreme base and apex of anterior femoi-a, anterior tibife 

 chiefly, posterior tibiae bn sally, and all tarsi red ; intermediate tarsi 

 basally white. Wings hyaline, stigma and nervures black, former 

 basally narrowly pale ; radix rufescent, tegulse nigi^o- fuscous. 

 Length 10-11 mm.; terebra 9*5 mm. 



Taken by Dr. E. Mjoberg's Swedish Scientific Expedition to 

 Australia, at Derby, Kimberley Division, West Australia, 

 Oct. 1910. 1 2 . 



This is possibly a dark form of F. damellicus (Westw.), 

 Enderl., as both have the same unusual streak of colour on the 

 cheeks. But Westwood describes his species as having three 

 large teeth on the hind femora, whereas the present species 

 has only two. Enderlein (Arch. Naturg. 1901) describes a 

 supposed damellicus Westw., from New Guinea, the Bismarck 

 Archipelago, and Borneo, which has two femoral teeth but not 

 the long pale streak on cheeks, and also differs from pictipes in 

 the sculpture of the pronotum. The present species is now the 

 only Parastephaoiellus in the Stockholm Museum ; the nearest 

 species with which it might be compared is the somewhat unlike 

 Hemistephanus teocanus Cresson. A detailed description has 

 been given so that this species may in future be clearly under- 

 stood, 



Peoc. Zool. Soc— 1922. No. LI. 51 



