3i THE CANADIAN ENTOItfOLOGlST. 



Tetraloiiia medicata, n. sp. — ? , Medicine Hat, Alberta, May 30, 1904, 

 Length, about 143^ mm.; like T. atriventris Sm., but pygidial plate 

 T\2iXXQv^tx {2,'i, \\\ fuscipes Rob., from Washington, D. C.) ; hair of head 

 (except occiput), of pleura and under part of thorax, all black, of thorax 

 above creamy white ; hair of legs black, or nearly, except on inner side of 

 anterior and middle tibiee and anterior tarsi, where it is reddish^ on middle 

 tarsi, where it is red, brilliant on in-ner side, and the scope of hind legs, 

 which is golden red ; clypeus coarsely, irregularly punctured, with a 

 median ridge; mesothorax dull, finely granular; mandibles with an orange 

 patch ; wings not so brown as in airivetiiris or fitscipes; abdomen without 

 bands. 



When working on this species, I had occasjon to examine a cotype 

 of Cresson's Melissodes dubitata. The specimen, which agrees excellently 

 with the description, shows that dubitata is not Tetralonia atriventris^ as 

 has been supposed, but is a valid species of true Melissodes. It is readily 

 distinguished from T. atriventris by the clypeal structure and sculpture 

 {punctures very dense) and the shining mesothorax. 



A7ithophora bomboides Willifigi, n. subsp. — ^ , Prince Albert, Sask., 

 June 18, 1905. Rather small; pale hair wholly dull white; middle of 

 thorax with a small amount of black hair ; first two abdominal segments 

 with pale hair (first three in true bomboides) ; sides of second segment 

 posteriorly with black ; third and foUovving with black hair ; scape with a 

 small light spot , clypeus yellow, except a crescent-shaped black mark on 

 each side, the convexity inward, and the lower inferior corners broadly ; 

 lateral marks reduced to 7iarrow stripes contiguous with the black part of 

 clypeus ; labrum yellow, except lateral and apical margins, and the usual 

 lateral spots. Proportions of antennal joints, venation, toothed hind 

 basitarsi, etc., normal. 



A DECISION ON MEIGEN'S 1800 PAPER. 



BY J. M. ALDRICH, MOSCOW, IDAHO. 



In the Canadian Entomologist of October, 1908 (pp. 370-373), I 

 published a discussion of this paper of Meigen's, to which I added a brief 

 item the next month (p. 432). Some time afterward, learning that the 

 International Commission on Zoological Nomenclature was accepting 

 certain nomenclatural questions for consideration, expecting to render 

 opinions on them, I sent to Dr. Charles Wardell Stiles, secretary of the 

 Commission, copies of what I had published on the Meigen paper, and 

 asked him to have the question taken up by the Commission. I did not 

 precisely specify the question to be considered, but simply gave him my 



January, 1911 



