Boil ii elongate, rather depressed and rather shining, closely and finely tubercul 



clothed with very Bhorl goldi n hair, transpan at, pale yellow, with the base of 



the abdomen castane* 

 Head v< ry i inded in front, clos< ly tuberculate anting in the males; 



antenna robust, pale yellow. 

 Thorax very short, shorter and not broader than the head, widest at the middle, 



closely or finely tuberculate or alutaceous, sides much rounded and slightly 



margined, basal margin Q( arly straight, with the angles very ohtuse. 

 Scutelium very large, triangular, closely and finely aspi i 



Elytra rather b] bul no! longer than the head and thorax, widest at the 



. faintly asperated in remote transverse rows, with the interstices 



alutaceous, sides margined and very slightly rounded, extremities broad and 



scarcely rounded. 

 Ibdomi n acuminate, with five segments more or less exserted and slightly asperal 



or alutaceous. 

 / gs moderate, pale yellow. 



/ mi, r parts pale yellow, with the base of the vi nter castaneous. 

 Differs from others in it- exceedingly minute size, large head, short thorax, and 



also in colour and sculpture. 



Habitat, Europe. Pound in Finland (Herr Reitter). 



This pretty species was di scribed by Col. Motschulsky mon I venty y 



from specimens d from Finland, and has lately been obtained by Herr 



Reitt ime numbers from the same country. This circumstance corrol 



very strongly all that I have so often written as to the accuracy of that author's 

 discrimination of the species of Trichopterygida, and of the genuineness of those 

 which he has described. While I was aring the former part of this 



work, Col. Motschulsky kindly sent me types of about fifty of his n.w species, and 

 of these onlj three could possibly be considered as sexual or accidental varii I 



Ptinella incerta. 



/'. incerta, Matthews, Trans. Am. Ent. Soc xi. p. L18, l^ s l : Biol. Cent.-Amer. 

 Col. ii. pt. i. p. 129, pi. iii. fig. 21, 1888. 



L. c. , 7 ,., lin. = 0*87 mm. — Elongata, angusta, com i, nitida, 



pilis brevissimis flavis sparse induta ; capib sat longo, obtuso, confertim et leviter 

 tuberculato, Bive alutaceo ; oculie retropositis, sat magnis, prominentibus ; pronoto 

 parvo, capite parum latiori, hand longiori, prope medium latissimo, basim versus 

 fortiter contracto, tubercuhs sat magnis confertim oiitecto, denressionibus duabus 

 ovalibus Bcutellum versus notato, lateribue marginati tundatis, postice 



contractis, margine basali fere recta, angulis rominentibus ; elytris Ion 



ustis, subparallelis, capiti pronoto longioribus, vix latioribus, convexis, 



nitidis, confertim et profunde asperatis, lateribus fere rectia et marginatis, apicibus 

 concolorihus. valde rotundatis, extremis albidis : abdomine casta 

 quatuor apertiB, apicali toto atque parte penultimi Isete fiavis, apicali acuminato; 

 pedibua atque antennie longis, rla\i>. 



Body elongate, narrow, convex, dark castaneous, Bhining, sparingly clothed with 



very Bhort yellow hair. 

 // ad isely and finely tuberculate or alutaceou placed 



far back, rath* r large and prominent : antenna long, yellow. 

 Thorax .-mall, rathei .hut not longer than the head, widest near the midd . 



■ tngly contracted I i d with rather large tub rcl -. 



and marked with two oval depressioua near the Bcutellum, Bides margined, 



Blightly rounded anteriorly, il margin nearly 



straight, with the angles acute and prominent. 



