372 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 45. 



MERHYNCHITES BICOLOR PICEUS, new variety. 



Two specimens from Oregon (Hubbard and Schwarz collection) are 

 too closely allied to be separated as a distinct species. The head, 

 thorax, and under parts are black, and the elytra are piceous black. 

 The front is strongly rugosely punctured. The elytra] striation is 

 even more indistinct than in wickhami. 



Type.— Cat. No. 14630, U.S.Nat.Mus 



MERHYNCHITES BICOLOR VIRIDILUSTRANS, new variety. 



A single specimen from near the Bright Angel Trail in the Colorado 

 Canon, Arizona (Pipe Creek, 3,700 feet altitude), collected May 10, 

 1903, by H. S. Barber, represents the opposite extreme of coloration 

 from cockerelli. The entire body is unicolorous black, but shining 

 with luster which from some angles is brilliant green, from others a 

 rich blue, and yet again may show a piceous undertone. The elytral 

 strial punctures are quite plainly larger than the interstitial punctures. 

 The front is strongly rugosely punctate. This form is readUy sepa- 

 rable from piceus by the strial punctation. 



Type— Cat. No. 15263, U.S.Nat.Mus. 



The six varieties described above are readily separable in the mate- 

 rial at hand, but there are undoubtedly intermediate forms. 



Family BRACHYRHINIDiE Bedel (1885), emended. 



Otiorhynchiclx LeConte, 1874. 

 Brachyrrhinidx Bedel, 1885. 



Table of subfamilies of Brachyrhinidx. 



I. Ocular lobes more or less developed; eyes variable, but generally elongate, trans- 



verse, acuminate beneath, and in part at least covered. 



1. Mentum large, covering the maxillae. 



a K Scobes not directed beneath EREMNIN^ Pascoe (1870). 



a 2. Scrobes directed beneath ENTIMIN^, new subfamily. 



2. Mentum smaller. 



h 1. Mentum not retracted; maxillae entirely free; scrobes feebly angled, rapidly 



evanescent DfROTOGNATHIN^, new subfamily. 



6 2. Mentum retracted; scrobes deep, arcuate, sometimes confluent beneath. 



PROMECOPIN^ Pierce (1911) 



II. Ocular lobes absent, and the eyes rounded or shortly oval and always free. 



3. Scrobes linear, directed beneath. 



c'. Pro thorax with ocular vibrissas, or if without them, with anterior coxae nar- 

 rowly separated TANYMECIN^ Pierce (1911). 



c^. Prothorax without ocular vibrissse. 

 d}. Anterior coxae contiguous; middle coxae feebly separated. 



PSALLIDIIN^, new subfamily. 

 (P. Anterior coxae not contiguous; middle coxae more or less widely separated. 



PACHYRHYNCHIN^, new subfamily. 



4. Scrobes variable, never at the same time linear and directed beneath. 



BRACHYRHININ^, new subfamily. 



The subfamily Pachyrhynchinae does not occur in our fauna. 



