258 Rev. T. A. Marshall's monograph of 



wliich, with the remaining segments, is smooth and shilling. 

 Terebra as long as ^ the abdomen, cm-ved ; the valves clavate. 

 Valvula ventralis large, pitchy, acute, not surpassing the anus. 

 Legs stouter and shorter than those of M. novicius (sp. 12), 

 especially in the J . Hind spurs shorter than V the metatarsus. 

 3- ? . Length, 1\ ; wings, 3^ Hn. 



Described from one male and two females. The belly 

 is not pale at the base. Anteunge ? setaceous, attenuated 

 towards the apex. Certainly distinct from globatas- 

 tibidUs, having a different facies ; the wings are hyaline, 

 or nearly so ; the metathorax is without a carina, the 

 terebra somewhat longer, and its valves more clavate. 



From Scotland ; Cameron's collection. 



17. Microfiaster crassicornis, Ruthe. 



Microgaster Sjnnolce, Hal., Ent. Mag., ii., 238, $ ? 

 (not of other authors). 



M. crassicornis, Euthe, Berl. ent. Zeit., 1860, p. 124, ? . 



Black ; palpi blackish ; legs rufo-testaceous, coxae, trochanters, 

 femora at the base, and tarsi, black. Wings infumated, squamulae 

 black, nei'vures and stigma fuscous. Antennas 5 filiform, stout, 

 hirsute, the 3 penultimate jomts subquadrate ; of the <? stouter, 

 longer than the body, subsetaceous. Face thickly punctulate, 

 gibbous above the clypeus. Mesothorax and scutellum smooth and 

 shining. Pleurfe sparingly punctulate in fi-ont. Metathorax and 

 segments 1 — 2 rugulose, subreticulated, the former carinated. 

 Segment 1 siibquadrate, narrowed at the base, with a shining 

 tubercle at the apex ; 3 and following smooth, shining. Terebra 

 almost i the abdomen ; valves stout, subclavate. Valvula ventralis 

 acummated, not reachiuLi: the anus. Legs stout ; spiurs of hind 

 tibise as long as i the metatarsus. ^ J . Length, 2 ; wings, 

 4i lin. 



This, like the preceding, is not easily distinguished 

 from tihialis. It equals the largest of that species in 

 size ; the antennae of the ? are of uniform thickness to 

 the apex, rather shorter than the bod}^ and beset with 

 black hairs. Face covered with hoary pubescence. The 

 chief distinction in both sexes is the smoothness of the 

 thorax, without visible punctures as in glohatiis-tibialis. 

 The rufous legs appear not to vary much ; the fore 

 femora are black at the base more or less, the 4 posterior 

 have a black basal streak above and below, broader on 

 the middle pair, which are sometimes altogether black. 



