Mjjlhvna.'] PTAPUVMNTDvE. 179 



"Sit. Kraatzii, Sluirp (i/Irmca, Tiye nee Aub.', (iraciUcoriiis, II. li. W. 

 ]n.'c ALattli.). Eloii.^atc, fuscous black, clothed with short fulvous pubes- 

 cence, closely and rather finely tuberculate throughout ; head moderate, 

 rather short with the labrum alone rufo-fuscous ; thorax rather large, 

 shining, and very convex, much rounded in front with two erect setae 

 near each anterior angle, widest before the base, sides and basal margin 

 slightly rounded and margined, posterior angles rounded ; elytra short, 

 rather narrower and much shorter than thorax, with two erect setfe near 

 the shoulder, deeply notched within the posterior angles, and obliquely 

 truncate towards the suture ; hind body longer than half the entire length 

 of the body, very bluntly narrowed, each segment furnished with a strong 

 erect seta near the hinder angles, apical segment rufous, penultimate edged 

 with M'hite ; antennas and palpi piceous more or less pale ; hinder legs 

 piceous, anterior legs and all the tarsi testaceous ; the setae mentioned 

 above are more or less common to all the species of the genus, but are 

 very often rubbed off. L. 3-3| mm. 



Marshy places, in sphagnum; Woking, Chobham, Wimbledon Common; Hastings; 

 Chat Moss; Scarborough; Scotland, rare, Forth and Tay districts. 



This species is very distinct, but has been confounded with others ; it 

 differs from the next species M. elongata in its shorter and broader form, 

 much longer and broader thorax and elytra, and darker and shorter legs 

 and antennas. 



1*1. elongrata, INIatth. (glauca, Aube). Very long and narrow, 

 fuscous, covered with a thick grey silky pubescence, closely and rather 

 strongly tuberculate ; head rather large, mouth yellow ; thorax moderate, 

 not dilated posteriorly; elytra as long and as wide as thorax; hind body 

 very long, twice as long as the anterior parts of the body, obtusely 

 narrowed, with the apical segment and half the penultimate segmeiit 

 rufous ; legs long, rufo- testaceous, antennae long, pitchy testaceous. L. 

 3|^-4 mm. 



The habits of this species differ from those of the other members of the genus ; it is 

 usu;illy found on beds of clayey mud devoid of herbage on tlie maigiu of water, often 

 in company with Bledii and Heteroccri ; if the mud is pressed with the foot it will 

 emerge, run with great swiftness, and then takf to flight ; it is somewhat widely 

 distributed : Sheppy ; Tonbridge ; Oxfordshire ; Bewdley, Worcestershire (banks of 

 S'-vern); Thornton Reservoir (Leicestershire); Scarborough; Northumberland district, 

 Wallington and Wooler; Scotland, Lowlands, banks of rivers, Sohvay and Forth 

 districts. 



This species differs from its allies in its large size, narrow elongate 

 and somewhat parallel form, very long hind body, long legs and antennae, 

 and shining silky pubescence. 



IMC. g-rseca, Kr. Elongate, very slender, and much narrowed behind, 

 rufo-fuscous, with the thorax, elytra, and apical half of each segment of 

 hind body rufous, clothed with grey pubescence, very finely tuberculate, 



N 2 



