NEW GENERA AXD SPECIES OF BBACOXIDAE. 47 



ginate behind antennae. Mesonotum rather convex in front, 

 coarsely punctate, mesopleurae smooth in the center, punctate 

 above and below; in front of the smooth broad, saddle-shaped 

 seutellum is a wide and deep-set fovea, marked in the center 

 with 6 closely set longitudinal lines: the postscutellum is also 

 short and broad but not so steeply declivous at the sides as 

 the seutellum ; there are two small f oveae in the center, larger 

 ones bordering them on the side. The metanotum is fairly 

 flat, rugose, almost longitudinally striate, and has a prominent 

 median longitudinal carina; the spiracle is short oval, its rim 

 hardly raised; the metapleurae are very finely reticulately 

 sculptured in the center, coarsely punctate outwardly. Abdo- 

 men sessile, elongate, depressed, 1st segment longer than broad, 

 2nd quadrate. 3rd and following segments broader than long; 

 the median longitudinal carina extends nearly to the middle 

 of the 3rd segment and as far as it reaches the dorsum is 

 longitudinally striate; beyond it is punctate and hairy, and 

 on either side of the median line at the anterior margin of 

 the 4th and 5th segments are large shallow circular foveae. 

 Apex bluntly pointed, penis protruding a little beyond the 

 short cerci. Legs long and slender, spines of tibiae straight. 

 Wings hyaline, stigma and veins ochraceous to dark brown, 

 radius emerging from middle of stigma, which is about 4 

 times as long as broad, 1st abscissia shorter than 2nd. 2nd 

 cubital cell a little longer than wide but parallel-sided, 1st 

 discoidal cell short petiolate from middle of parastigma, 2nd 

 discoidal cell not completely closed and a pale orange suffusion 

 on the disc below it, the externo-medial and the anal nervures 

 greatly thickened outwardly and the transverse median, which 

 leaves the median far beyond where the basal intersects, is 

 slightly curved. 



Hob. Laloki. Papua. One specimen. Collected by F. 

 Muir, 1910. 



Sub-fam. SIGALPHINAE. 

 Muiriella new genus (type conclsa). 



Xear Polydegmon but the hind coxae without a tooth and 

 the ventral side of abdomen entirely concave. 



Muiria concisa, n. sp. 



2 2 mms. long. Black, the legs and antennae basally 

 yellowish brown, head, prothorax and mesothorax smooth and 

 polished, finely punctate and hairy. Head transverse, wide 

 between the eyes, ocelli arranged in an isosceles triangle on 

 the vertex, the anterior angle obtuse, lateral members nearly 

 as far from each other as from the border of the eye, front 

 excavated between the antennal sockets, which are somewhat 

 removed from the eye margin, antennae 21-segmented, not as 

 long as the body, filamentous, the segments decreasing in length 

 outwardly, the last ten or so moniliform, apically recurvate; 



R. A. Soc, No, 80, 1919. 



