610 NORTH A MEBICA N SCOL YTID BEETLES— EICHHOFF. vol. xvm. 



the eutrauce of tlie galleries, but ouly shortly before the females are 

 swarming. 



[Say's orgiual description o{ Bostrichus xylographus is very clear but 

 greatly vitiated by the paragrajjli describing the galleries; for it is 

 evident that a Scolytid excavating ''immediately beneath the bark, on 

 the wood, a rectilinear groove, Avitli short, equal, lateral grooves at 

 right angles with the preceding," can not be referred to any species of 

 Xylehorus. This discrepancy can, however, be explained: The Scoly- 

 tids described by Say' were sent to him by the younger Rev. J. F, 

 jMelsheinier from the old Melsheimer collection with the manuscript 

 names- and notes by the elder IJev. F. V. Melsheimer. Among them 

 were Bostrichns xylographus^ and another species (No. 155), B. xaittJio- 

 (jraphus. A description of the latter was either drawn up by Say or at 

 Jeast intended by him; but, at ;iny rate, in Say's published paper the 

 description itself is omitted and the paragraph referring to the gallery 

 of B. xanthoiiraphus (which evidently is a species of Pityophthoru.s) 

 became attached to the dcscrii>tion of 7>. xylograplms. Dr. E. F. Mels- 

 heimer was aware of this confusion and attempted to straighten it out^ 

 by quoting TomknH xanthographnH as a species distinct from T. xylo- 

 gruphns. Ue also added, in his own copy of the old Melsheimer cata- 

 logue, the following manuscript note to B. xanthographns : "Differs 

 from xylographus Say in having the i)osterior declivity slightly trun- 

 cated, and in being somewhat less."] 



[The following is a summary of the synonymy discussed in these notes: 



Hylasten rufipes, Eichhoff = Hylesinnn opuciilus, Le Conte. 



Hyla-stes jiorcuhm, Hiucuso'S z=careriivsv8, Zimmkrmaxn, Lk Conte ^^ (jru7wsus, 

 Chatman. 



Hijlasles salehro.siis, Eichhoff =^ scabr'qxnnin, Zimmekmaxn, Le Conte. 



Hylastes scohinosus, Eichhoff, is to be added to our list. 



I'hluonnus dentatits, Say ^^^ (jranu/er, Chapv is =z haayii, Eichhoff. 



Hijpothenemus crud'nv, Panzer ;= /rj.sj>(V/«/Hs, Le Conte. 



Hypothenemus (lissimiUn, Zimmekmann := chapui-sii, Eichhoff. 



Hi/2>otheni'm>ts (rectus, Le Co'stk^ sciilpttiraluii, Eichhoff. 



ritijophllwrus cribripennis, Eichhoff :=2)((//h8, Zimjiermann. 



1 ityophthorus pruinosus, Eichhoff = qturciptrda, SciiWARZ. 



l'i!yoj)hthoriis pnlclielhis, Eichhoff probably ^^/(i>/ic'ej)S, Le Conte. 



rUyaphthorus puherulus, Le Conte ^iw/aws, Eichhoff. 



Xiilthorus JcyJographus, Say = saxeseiti, Katzebukg. 



Xyhboriis punctipennis, Le Cf)NTE, is the female of Tomicus balsaittcwa, Le Conte, 

 aud belongs to the genus Pilyogeiies.'] 



' Jour. Acad. Nat. Sci. Fhila., 1826, V, pp. 317-319. 



^ Catalogue of Insects of Pennsylvania, 18U6. 



3 No. 148 of the Catalogue. 



■•Catalogue of the Coleoptera of the United States, p. 87, 1853. 



