Jlomaluta.] sTAPnYLiKiD.ii:. 73 



rather longer than in II. fraglUs, snb(|ua(Irato ; elytra considerahly longer 

 than thorax ; ■whole suiface of hind body very densely and linely 

 punctured. L. 2 mm. 



Sexual differences very slight and hardly appreciable. 



Rare; on tlie banks of rivers, &c., in shingle and damp sand; formerly taken by 

 Jlr. Wollaston at Slapton Ley, Devonshire ; has also occurred at Tonbridge and in 

 the New Forest. Scotland rare, Tweed and Solway districts (banks of a tributary of 

 the Nith near Dumfries, and of the river Bowniont at Yetholm, Kelso). 



H. delicatula, Sharp {Thincvcin simiUima, Muls. et Rey). Very 

 small, linear and depressed, very finely and densely pubescent, pitchy- 

 black or fuscous with the elytra brownish ; head subquadrate, scarcely 

 narrower tlian thorax ; antenuce long and slender, testaceous or slightly 

 pitchy, the length of each joint distinctly greater than the breadth, 

 second joint longer than third, third than fourth, 5-10 nearly equal, 

 eleventh plainly longer than tenth ; thorax about as long as broad_, 

 densely and oljsoletely punctured, slightly narrowed behind, in some 

 specimens broadly channelled^ in others without channel ; elytra plainly 

 longer than thorax^ very thickly and finely punctured ; hind body with 

 all the segments above equally thickly and very finely punctured ; legs 

 pale testaceous. L. li mm. 



Sexual differences very slight, hardly appreciable. 



On the banks of rivers; very rare, and only found in Scotland; banks of Nitli, 

 Solway district, at Thornhill (Sliarp) ; Rannoch (Crotch). 



From H. lovgula, which it considerably resembles, this species may be 

 distinguished by its much smaller size and paler colour. 



H. subtilissima, Kr. {TMncecia subtilissima, Muls. et Rey). A 

 very small species fuscous or pitchy-brown with the elytra and thorax 

 lighter, and the mouth, antennae, legs, and apex of abdomen testaceous ; 

 head large, subquadrate, about as wide as thorax ; antennae rather stout 

 but not thickened, third joint plainly shorter than second about equal to 

 fourth, joints 4-10 about as broad as long nearly equal, eleventh plainly 

 longer than tenth ; thorax hardly as long as broad, slightly contracted 

 behind, with a central channel (which is sometimes obsolete), very 

 finely punctured; elytra lighter in colour than head and tliorax, con- 

 siderably longer than latter, more thickly and finely punctured than 

 either; hind body with the segments finely and rather closely punctured, 

 the terminal ones w^ith the punctuation somewhat less close than the 

 others. L. 1^ mm. 



jNIale with the seventh segment more produced than female^ and its 

 hind margin rather more rounded. 



Only found hitherto in Scotland, where it appears to be common on the banks of 

 rivers ; Tweed, Solway, Forth, and Moray districts. 



This species has much the appearance of Tlimohiiis linearis, with 

 which it is found in company ; from the preceding species it may easily 

 be distinguished by its shorter and stouter antennae^ of which the joints 



