NO. 1413. NEW FILIPINO HYMENOPTERA—ASHMEAD. ^67 



Genus MESOSTENUS Gravenhorst. 

 i8. MESOSTENUSLEUCOZONATUS, new species. 



Male. — Leng-th 6.5 mm. Black and shiny, impunctate, with the 

 orbits slighth' interrupted at apex of eyes, the face below antenna', the 

 clypeus mandibles, except teeth, palpi, an annulus on the antenme, 

 tegulse, a spot beneath, hind margin of prothorax, a large spot on disk of 

 mesopleura, and the large spot on lower hind end, a line on the hind 

 margin of the same, a large triangle spot at l)ase of the in.sertion of the 

 hind wings, the apical half of the metathorax, the apical margins of 

 all the abdominal segments, the front and middle coxa» and trochan- 

 ters, the apex of the hind coxa\ basal tw^o joints of front tarsi and the 

 hind tarsi, except base and apex of the first joint, the apex of joints 

 two and three and the following joints, which are black, pure white, 

 the rest of the legs, except the three terminal joints of front tarsi, apex 

 of middle tibise, their tarsi, apex of hind femora, apex of hind tibia, 

 and all tibial spurs, which are black, being red; the antennae, except 

 the first four or five joints ])eneath and the broad white annulus^ 

 occupying joints l-i to 16, are black. Wings hyaline, the stigma and 

 veins black, the areolate small, nearl}^ quadrate, receiving the second 

 recurrent nervure a little be3'ond its middle. 



Tyjje.—Cvii. No. 8330, U.S.N.M. 



Manila. (Father Robert Brown.) 



NESOMESOCHORINI, new tribe. 



NESOMESOCHORUS, new genus. 



This curious new" genus is based upon a single female specimen 

 received recenth^ from Father Brown, and its position is uncertain. 

 It is remarkable in several particulars and difiicult to classify. In 

 venation and in the petiolated, compressed abdomen it shows some 

 afiinit}' with the tribes Aiumialhii and. Caiii]H>j>Je(jtnl, but it certainly 

 can not belong to either of these tribes, and in my perplexity 1 have 

 made it the type of a new tribe next to the JresoeJioriii!. 



The head is transverse, the eyes being abnormally large and occupy- 

 ing the whole sides of the head, converging anteriorly and reaching to 

 the base of the mandil)les, there being no malar space; the clypeus is 

 represented b}" a small convex prominence; the mandibles are small 

 and bidentate at apex; the thorax is about two and a half times as long- 

 as thick, narrowed posteriorly, the mesonotum with two sharply 

 defined parapsidal furrows that converge posteriorly; the metathorax 

 is as long as the scutellum, the meso- and pro-notum united, and is dis- 

 tinctly areolated, the basal area being triangular, the areola being- 

 long and hexagonal; the abdomen is about twice as long as the head 

 and thorax united, strongly compressed and longly petiolated. and 



