cc. Thorax much shorter than the head and than the first tergite. ECHIDNOPHAGIDÆ. E. GALLINACEA, the hen flea also attacks man (fig. 96). (= ARGOPSYLLA = XESTOPSYLLA) ECHIDNOPHAGA Olliff. FOOTNOTES: [E] Adapted from Banks, Nuttall, Warburton, Stiles, _et al._ [F] Dr. C. W. Stiles considers the species which is responsible for spotted fever distinct from the _venustus_ of Banks, separating it as follows: Goblet cells about 75 in the male or 105 in the female. Texas. _D. venustus._ Goblet cells 157 in the male, or 120 in the female; stigmal plate shaped as shown in the figure (figs. 150 a, b). Montana, etc. D. ANDERSONI. [G] Professor C. R. Crosby who has been working upon certain capsids states that he and his assistant have been bitten by LYGUS PRATENSIS, the tarnished plant bug, by CHLAMYDATUS ASSOCIATUS and by ORTHOTYLUS FLAVOSPARSUS, though without serious results. [H] Species marked with an * are known to transmit malaria. Species found only in tropical North America and not known to carry malaria have been omitted from this table, but all found in the United States are included. [I] This table to the North American genera of the Tabanidæ is adapted from one given by Miss Ricardo. [J] The classification of the Muscoidea as set forth by Schiner and other earlier writers has long been followed, although it is not satisfactory, being admittedly more or less artificial. Within the last two or three decades several schemes have been advanced, that of Brauer and Bergenstamm and of Girschner, with the modifications of Schnabl and Dziedzicki having obtained most favor in Europe. Townsend, in 1908, proposed a system which differs from Girschner's in some respects, but unfortunately it has not yet been published in sufficient detail to permit us to adopt it. From considerations of expediency we use here the arrangement given in Aldrich's Catalogue of North American Diptera, though we have drawn very freely upon Girschner's most excellent paper for taxonomic characters to separate the various groups. It may sometimes be found that a species does not agree in all the characters with the synopsis; in this case it must be placed in the group with which it has the most characters in common.