widely separated than in Cuesinus, aiite-coxal ridges acute, metastenuim rather 

 coarsely punctate, abdominal segments convex, moderately strongly punctate. Anter- 

 ior legs very little stouter than the posterior ones; front tibiae with an acute tooth at 

 apical third and with the outer apical angle prolonged into a broad process which is 

 longer than the first tarsal joint and which terminates in two acute, recurved teeth. 

 Length 2.5 mm. 



Described from six specimens in which I fail to observe any sexual 

 characters. Three specimens were collected by Mr. H. G. Hubbard, to 

 whom the species is dedicated, at St. Lucie in Southern Florida on April 

 26th. From his diary I infer that they were beaten from Hickory trees. 

 The three other specimens are from the collection of Mr. Henry Ulke and 

 are also from Florida. 



Four South American species of Bothrosternus have been described 

 which are known to me onl\- from the descriptions. B. Htihbardi seems 

 to come nearest to truncatus Eichh. , but differs in the form and sculpt- 

 ure of the thorax. In our own fauna the species cannot well be con- 

 founded with any other Scolytid. 

 Hylesinus fraxini. 



This is said (Eichh., Europ. Borkenk., p. 136), to occur in Califor- 

 nia; but I have never seen North American specimens answering the de- 

 scription of this European species. 



Hylesinus trifolii Mueller, 

 is omitted from Henshaw's List and ought to be inserted after opaculus. 

 (see Dr. Riley in Report of the Commissioner of Agricult,, 1878, p. 248), 

 According to Chapuis's and Eichhoff's mode of classification trifolii be- 

 longs to the second division o{ Hylasies in which the third tarsal joint is 

 bilobed and the elytra separately rounded at base. This division is 

 identical with Leconte's genus Hylurgops of his group Hvlasles, which 

 is distinguished by him from the typical Hyliirgi by the relative length 

 of the abdominal segments and the not-depressed scutellum. Both 

 characters hold true so far as the genus Hylastes is concerned but are of 

 little practical value for distmguishing the genus Hylurgops. Still, I 

 think that trifolii ought to be placed in the genus Hylesinus on account 

 of the structure of the antennal club. In this genus the first joint of the 

 club is but little larger than the following, and always pubescent; where- 

 as in Hylastes and Hylurgops it is nearly as large as the rest of the club 

 always glabrous. This is the only species in our fauna of the tribe 

 Hylurgini which is known to infest an horbaccous plant. 

 Phlceosinus punctatus. 



The sexual characters will hel]) tt) distinguish this from the other 

 North American species: 



