HYMENOPTEROUS FAMILY STEPHANID^. 819 



This species appears to be characterized by the small head, 

 smooth pro- and meso-thorax, and very short terebra. 



26. RUFicoLLis Enderl. 



Dlastephanus rvficolUs Enderl. (3), p. 205, $ c5' • 



5 S • Head small, globose. Neck strongly transrugose. 

 laterally more finely; semiannular trans-striate, basally more 

 coarsely and posterior margin latei'ally irregularly rugose. 

 Mesopleurfe dull, with largo diffuse punctures, upper thiid finely 

 granulate punctate, yellow pubescent. Petiole very slender, 

 finely trans-striate; second segment dull, finely punctate, basally 

 more granulate. Terebra in 5 slightly shorter than body, 

 sheaths entii'ely black. Hind femora bidentate ; hind coxae 

 smooth, hind tibise and metatarsus without pubescence. 



Black ; head ferruginous yellow, vertex more brown in $ , 

 redder in S ', antennae darkish rufo-testaceous, apically broAvn ; 

 posteiior half of pronotum feiTUginous ; anterior coxae and legs 

 pale ferruginous, all tarsi rufescent. Anterior femoial tooth 

 yellow, the posterior black. Wings hyaline ; stigma long and 

 yellow, nervures brown. 



Length, §, 10| mm.; petiole 3"2 mm.; terebra lOg mm.; 

 fore wing 6 mm. S , 8 mm. ; petiole 2'2 mm. ; fore wing 

 4*4-4"6 mm. 



Habitat: Formosa. H. Sauter ; May-June 1912. Co-types in 

 Dahlen and Stettin Museums. 



DilFers from D. Jlavidentaius in the entirely yellowish head, 

 not pubescent hind tibiae and metatarsus, black terebral sheaths 

 and black posterior femoral tooth. 



27. MACULiFEMUR Enderl. 



Diastephanus maculifeviur Enderl. (4), p. 294, 5 . 



5 . Head rather large, globose. Frons densely and coarsely 

 punctato-rugose, the rugosities run from the median line 

 obliquely backwards, apically more transversely ; space between 

 frontal tubercles longitudinally striate : vertex with three or 

 four strong transcarinfe ; occiput wavily trans-striate and finely 

 punctate, with narrow central impression. Cheeks buccate ; 

 posterior margin of head bordered. Second flagellar joint one 

 and a half times as long as first ; third almost longer than first 

 and second together. Pronotum densely t]?ans-striate, more 

 strongly towards apex, posterior ma,rgin polished smooth. Meso- 

 notum apically strongly transrugose, dorsally with deep diflfuse 

 punctures* and microscopic striation, a deep impression before 

 scutellum, which is polished smooth, with deep marginal punctures 

 and subobsolete median impression. Mesopleurse polished 

 smooth, difiusely punctate beneath, apically finely and densely 

 punctate ; metapleuree and median segment separated by a 

 carina betAveen two rows of small punctures, and both with large 

 hexagonal to circular punctures, honeycomb-like. Petiole very 



Proc. Zool. Soc— 1922, No. LV. 55 



