Rev. A. Matthews" Nofeft <m Trichoj^terygia. 1 (!7 



found to ag'vee in every other character. It sometimes, liut ver\- 

 rarely, happens that similar sculpture exists in totally dissimilar 

 species, l)Ut iu all these cases the size, form, or the length of 

 limbs contradicts the possibility of their identity. Among the 

 species described in the following pages, T. vlcina and T. cof/nafa 

 respectively approach the Euro])ean 7'. i>ic!cnriiiM and T. f'ufifi- 

 I'lifa/'is, but after the most careful comparison, I feel convinced 

 that they cannot be associated with those species. 



The most interesting among the captiires of Mr. Crotcli, arc 

 /fi/(/r(isra/)h(( nnfaii.f, and .\riitsclinl><l:i>ni> fiinidfafal/r, of those 

 llie former is one of those synthetic forms wliose true ])ositiou it 

 is so ditlicult to determine, and the latter a remnrkable insect 

 previously known only Ijy a much mutilnteil nnd uni(pie example 

 iu the collection of Dr. Le Conte. 



List of TriclKijdi-riKila found by Mr. Crotch in America. 



The species marked \Y, were found on the Western side, tliose 

 marked P], on the Eastern side of tlie CoiUincnt. 



Ilydroscapha natnus, Le Conte. W. 

 Nossidium posthumnm, I\Latth. E. 

 -Motschulskium sinuatocoUe, Matth. W. 

 Actidium Crotchianum, n. sp. W. 



,. politum, n. s|>. W. 



I'tilium Columliinnum, n. sji. W. 



,, humile, n. s]). W. 



,, ol)scurTmi, n. sp. W. 



Nej)]ianes teviusculus, Matth. E. 



Trichoj)teryx moerens, Matth. E. iillied to 7'. r<ir/ol<iS(i. 



,, aspera, Hald. E. 



,, parallela, Motsch. W. 



,, vicina, n. s]). W. allied to 7'. /i/i-icor/iis. 



,, castanea, u. s]). W. „ 7'. I'^dithin. 



,, Californica, n. sp. W. ,. 7'. Lithin-i'iii. 



„ xiinthocera, n. sp. W. ,. 7'. Ilnnm. 



„ ]>arallelopipeda, n. sp. W. ,. T. Ilornii. 



„ diffiiiis, Motscli. W. 



,, comiata. n. sii. \V, ., T. I'K.scicitldrix. 



4^ 



