132 GEO. H. HORN, M. D. 



seem to me tenable, Ozjenini having the posterior coxaj separated, Nbmius 

 tlie body pedunculate and a mandibular seta, Morio the anterior tibiae 

 dilated and body ♦pedunculate. If we take the ligula as a point of 

 comparison the resemblance is rather with Pachyteles (which however, 

 has but two seta3 or Siagona wheje there are six) than with Morio and 

 Nomius where the paraglossae are long and slender. 



The body is not at all pedunculate and* there are two supra-orbital 

 setae, characters which perfectly exclude it from all association with 

 Broscini. There can ' be no suspicion of association with Pterostichini 

 from the differences in tarsal and antennal structure. 



There is then no course left but to consider it a distinct tribe leading 

 directly from the Siagonini, Ozsenini and Nomiini through Morio to 

 the Pterostichini. 



One species of Fsydrus is known ( P. piceus Lee), which occurs from 

 Lake Superior to northern California. I fou«d it in the latter region 

 living under dead bark, it ejects a liquid from its anus when disturbed 

 which is not, like in Nomius^ especially offensive. 



Tribe XXL- Morionini. 



Antennae more or less moniliform with four entirely glabrous joints, arising 

 under slight frontal plates. Head suddenly narrowed behind the eyes, neck stout, 

 front with two supra-orbital setae, clypeus slightly prolonged. Eyes round, moder- 

 ately prominent, truncate posteriorly by the sides of the head, distant beneath 

 from the buccal opening. Mandibles at least slightly prominent without setigerous 

 puncture externally. 'Maxillae ciliate internally (with a tooth behind the apex in 

 Morio) ; the palpi moderate, the last joint slightly fusiform. Mentum deeply 

 emarginate, usually with a bitid tooth ; ligula broad, free and bisetose at apex, 

 the paraglossre slender, longer than it, not ciliate; palpi moderate the last joint 

 cylindrical (longer than that of the maxillary Morio). Thorax with a setigerous 

 puncture at each angle (and three at the side Morio). Body slightly pedunculate, 

 scutellum distinct. Elytra feebly margined at base, sides narrowly inflexed, disc 

 with a single dorsal puncture at apical third, on the third interval near the third 

 stria, margin with a very feeble interruption but with a distinct internal plica. 

 Prosternum not prolonged. Mesosternum rounded in front, the epimera veiy 

 narrow. Metasternal side piec^es nai-row, the epimera distinct, posterior coxte con- 

 tiguous. Ventral segments witliput coriaceous margin. Tibiae gradually broader 

 to apex, the middle tinely spinflose externally, the anterior more dilated, the 

 apical angle somewhat prolonged, inner side deeply emarginate. the inner spur 

 above the emargination. 



The first three joints of the anterior tarsi are slightly dilated in the male. 

 The remarks which have been made on the preceding tribes and their 

 relationship with the present, sufficiently explain the views intended in 

 the present paper. As constituted by Lacordaire (Genera i, p. 180), the 

 tribe is a mixture of very dissimilar material. Psydrui^ and Nomius are 

 already excluded. Schaum (Berl. Zeitschr. 18(30, p. 177), suggests the 



