318 Trans. Acad. Sci. of St. Louis. 



the coxae. Length 2,4 mtn.; width 0.78 mm. California (Pomona 

 Mts.), — H. C. Fall (usiformig n. sp. 



The various genera that have been made at the expense of 

 Oxypoda are not discussed at present, but, from cursory ob- 

 servation, they seem to be less well defined than those allied 

 to Aleochara. Arnica^ of the above table, was sent to me 

 gummed with a very large ant, having a rufous head, piceous 

 abdomen and dark brown intermediate parts, but it is prob- 

 ably merely incidentally inquilinous. Perexilis is not rare in 

 the Mississippi Valley but is solitary, like most of the Oxy- 

 podae, which fact accounts largely for the paucity of indi- 

 viduals representing the very numerous species at present in 

 collections ; a specimen before me from New York also repre- 

 sents perexilis, in all probability, differing only in a few very 

 insignificant points. Fiisiformis is allied to gatosensis, of 

 Bernhauer, a specimen of which was very kindly given me by 

 Dr. Fenyes, but it is stouter and more fusiform, with larger 

 and more transverse elytra, more transverse subapical and less 

 elongate eleventh joints of the antennae, with several other 

 differential characters ; in gatosensis the last antennal joint is 

 as long as the preceding three combined ; these two species 

 constitute a peculiar and rather isolated geographic group of 

 the genus. 



Dasyglossa Kr. 



The species which I described several years ago under the 

 name Oxypoda congruens (Ann. N. Y. Acad. Sci., VII, p. 

 292), is evidently the one recently identified as the European 

 Dasyglossa prosper a Er. It is abundant in the northern Rocky 

 Mountain regions, extending eastward as far as Lake Su- 

 perior and may be cosmopolitan, or at least widely distrib- 

 uted in the northern hemisphere. 



Hylota n. gen. 



This genus differs greatly from Dasyglossa in having the 

 metasternal projection advanced between the coxae until it 

 meets the mesosternal process, which is however free, and it 



