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. 1(33 of my catalogue, 

 and lastly, E. jyennatus, which varies in size from o% to nearly 

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



No. 220 has affinities to 3Ialachius and Belongs to the tribe 

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

 publish as soon as possible. It has caruncles like 3Ialaehius, 

 but we cannot place it in that genus with propriety. 



No. 250. These are my notes on this insect, w^hich I call 

 Necrojiliorus 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 

 give you here a delineation of the trophi of 

 that insect which I have dissected. You will 

 observe that the right mandible differs from 

 the left. 



The four insects you have described in 

 Fig- 4- , . ' ' • . 



your letter are entn^ely new to me. A as 



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



come between BolitophaguB 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 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 Til- 



Fig. 5. ^ 



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 Prlocera of Kirby. 

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



