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, E. pennatus, which varies in size from ^ to nearly 

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



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

 Melt/rides of Latr., but must constitute a new genus, which I will 

 publish as soon as possible. It has caruncles like Malachius, 

 but we cannot place it in that genus with propriety. 



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

 Necroplioruz cequalipes 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 

 (\ ^ Jj give you here a delineation of the trophi of 

 a that insect which I have dissected. You will 



observe that the right mandible differs from 

 the left. 



The four insects vou have described in 



V 



your letter are entirely new to me. A is 

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

 come between Bolitophagus and Diapcris. I cannot make 

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

 not know your D. 



I am more troubled with the TiUidce than 

 with any other family of insects. You aided me 

 much in a former letter, but I have several 

 species which cannot be arranged under any 

 genus. One, which seems to come between Tll- 

 lus and Clerus, has the last joint of the antennae 

 nearly as long as the 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 



Fig. 4. 



