1:20 CLAVICORNIA. [Tricliopteryt. 



narrower tlian elytra, with small tubercles, arranged in rather thick, 

 transverse, curved rows, interstices not shining, scarcely dilated behind, 

 posterior angles very little produced, somewhat acute, elytra rather short, 

 a little contracted in front and behind, finely asperate, apices rounded ; 

 abdomen much exserted, acuminate; legs yellow; under-side entirely 

 black. L. 1 mm. 



Very rare ; found only by Mr. Haliday, both the larva and perfect insect together, 

 under damp fallen leaves or stones, in the bed of a dried-up brook (Glen-na-Chatta), 

 of the Shouruagh River, Cork. 



T. dispar, Matth. Rather depressed, castaneous-brown or fuscous, 

 clothed with a silvery pubescence ; head moderately large, eyes pro- 

 minent, antennae long/dull yellow ; thorax short, slightly dilated behind, 

 rather thickly covered with small distinct tubercles placed in curved 

 rows, interstices alutaceous, posterior angles scarcely produced ; scu- 

 tellum rather large ; elytra at shoulders narrower than thorax, very mujh. 

 dilated towards apex iu female, slightly contracted in male, closely and 

 rather confusedly asperate ; abdomen somewhat attenuated and mode- 

 rately exposed ; legs rather long, bright yellow ; under-side pitchy-brown 

 with the mouth and coxae yellow. L. |--|- mm. 



Tn moss, especially in spring; rare; London district (Waterhouse) ; Devonshire 

 (Wollaston) ; Gumley. Leicestershire, and Oxfordshire (Matthews) ; Knuwle and 

 Randan Woods (Blatch). 



T. ambiprua, Matth. Castaneous-brown, oblong, rather broad, very 

 convex, clothed with golden pubescence ; head rather large and broad, 

 eyes small, not prominent, antennae rather slender, obscurely yellow ; 

 thorax broadest before base, sides very slightly rounded, with irregularly 

 arranged distinct large tubercles, posterior angles slightly produced ; 

 scutellum large ; elytra oblong, rather depressed, not narrowed, or even 

 slightly dilated, behind, a little contracted at base, rather deeply and 

 thickly asperate; legs long and robust, clear yellow, tarsi elongate, with 

 basal joints thickened ; abdomen moderately exserted, with apex feebly 

 tridentate ; under-side castaneous, with the last segments of the body 

 lighter, the coxa? and apex of metasternum yellow. L. f-|- mm. 



Under bark, &c. ; very rare ; Oxfordshire (Matthews) ; Peckham, under bark of 

 Hornbeam (Billups)j it appears to be common in America. 



T. Poweri, Matth. (Chevrieri, All.). Broad, oblong, very convex, 

 fusco-castaneous, clothed with golden pubescence ; head large and broad, 

 eyes not prominent; antennae rather long, pitchy-testaceous; thorax 

 rather large, slightly dilated behind, with small tubercles thickly arranged 

 in interrupted rows, interstices shining, finely reticulate, posterior 

 angles acute, very little produced ; scutellum large ; elytra quadrate, 

 somewhat dilated behind, deeply asperate in thick transverse rows, sides 

 margined, apices very broad ; legs long and stout, clear yellow, with the 

 femora dusky; under-side pitchy, with the apical segments of the abdo- 

 men, the coxa>, and metasternum, yellow. L. { 1 mm. 



