48 



proportions. I have but four species of your genus Taphei' 

 cerus, namely, the one here represented, No. 133 ? and No. 163 ? 

 which does not seem to differ from No. 163 of my catalogue, 

 and lastly, U. 2y^nnatus, which varies in size from ^-^ to nearly 

 I inch. Those described in your letter are not known to me. 



No. 220 has affinities to MalacMus and belongs to the tribe 

 Melyrides of Latr., but must constitute a new genus, which I will 

 publish as soon as possible. It has caruncles like 3IalacJiiics^ 

 but we cannot place it in that genus with propriety. 



No. 250. These are my notes on this insect, which I call 

 Necropliorus oequaUpes in my catalogue. " Characters in which 

 it is distinct from N. vespillo ; margin of elytra yellow ; tro- 

 chanters with acute spines ; elytra glabrous ; posterior tibiae 

 slender ; frontal yellow spot narrow." 



As I am still in doubt about 740, I will 



(V I J) give you here a delineation of the trophi of 



d c that insect which I have dissected. You will 



observe that the rio'ht mandible differs from 



the left. 



The four insects you have described in 

 your letter are entu'ely new to me. A. is 

 probably a Boscia. B, as far as I can judge, would seem to 

 come between BoUtojjliagus and Biaperis. I cannot make 

 anything of C\ which you have described admirably. I do 

 not know your B. 



I am more troubled with the Tillidce than 



¥with any other family of insects. You aided mo 

 much in a former letter, but I have several 

 species which cannot be arranged under any 

 eenus. One, wliicli seems to come between Til- 

 Fig. 5- ^ 



luH and Clems, has the last joint of the antennfB 

 nearly as long as tlie elytra. It is flat and oblong. The 

 insect has something of the habits of Priocera of Kirby. 

 The other might be a Cylidrus were it not for its filiform 



