174 



The species which I have called "dispm'" I cannot recognize 

 among those described by Motschixlsky ; it is most probably one of the 

 number, since it appears to be widely dispersed, though very rare ; I 

 have myself taken two specimens, and have examined others captured 

 by Messrs. Wollaston and Waterhouse ; I have also received it from the 

 continent, under the name of T. picicornis. 



T. amhigua is another which I cannot recognize among Motschul- 

 sky's species ; it is very distinct and well marked, but appears to be 

 generally confounded with T. piimila, Erichs. I have lately received a 

 great many examples of this species from Dr. Schaum, taken by himself 

 in America, precisely similar in all respects to the European specimens. 

 I have never yet been able to discover what the T. pumila of Erichson 

 can be ; not one of the thousands which I have examined has agreed 

 with his description, but the name appears in every catalogue, and the 

 species is supposed to exist in every good collection of this family ; 

 nevertheless, all which I have seen, invariably turned out to be either 

 T. amhigua or T. similis. ifigures of both these will shortly be pub- 

 lished in the " Annals and Magazine of Natural History," in my paper 

 on Dr. Schaum's American TricTiopterygidce. 



Perhaps the insect I call T. Kirhii may be the true T. pumila of 

 Erichson ; it agrees with his description insomuch that it has the four 

 anterior tarsi dilated, but it differs from it in having the posterior tarsi 

 also partially dilated, and in many other points. 



Trich.fucicola, Fairmaire. 



This species, formerly taken only in Ireland and on the continent, 

 has now occurred on the British shoi'es. One specimen was found last 

 autumn by Mr. Crotch on the Chesil Bank, and I detected another in 

 the collection of the late Mr. Grriesbach, which probably came from the 

 estuary of the Thames. 



TricJi. lata, Motschulsky, Bull. Mosc, 1845. 



May be known by its large size, sub?eneous colour, long brownish 

 pubescence, subquadrate shape, long legs and antennae (the latter being 

 entirely pale yellow), and by the sculpture of the thorax, which is 

 strongly tuberculate, with the interstices faintly alutaceous. 



It may be found in the summer, not uncommonly, in heaps of dead 

 leaves. 



Trich. hovina, Motsch., Bull. Mosc, 1845. 



Differs fi'om T. sericans, with which it is usually associated, in its 



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