HARPALIN/E 167 



Length (d 71 9 ) 10.5-13.0 mm.; width 3.8-5.0 mm. Illinois (Topeka), 

 Hart and Hood. Rather abundant hoodi n. sp. 



Aside from the plurality of marginal thoracic setae, in which it 

 resembles Nothopus, Piosoma and the Acupalpid Glycerins nitidus, 

 the triple elytral series of punctures and uniformly punctulate 

 abdomen, in which it resembles Selenophorus and allied genera and 

 the peculiar pallid coloration of the dense integuments, in which it 

 perfectly recalls Geopinus and Pharalus all constituting further 

 examples of the confusing structural parallels previously alluded 

 to, the characters of this genus are so purely Harpalid that it forms 

 a very strong argument in favor of those who contend against the 

 propriety of separating Selenophorns from Harpalus. In such 

 cases there are only two courses available to the systematist: 

 either to regard all as forming a single genus, with numerous sub- 

 generic groups, which must be named in order to facilitate refer- 

 ence, or to consider these groups as genera. For nomenclatorial 

 reasons I believe the latter course to be by far the more rational, if 

 warranted in any way by structural divergencies. There are 

 numerous instances of polymorphous genera of this kind in the 

 Mollusca, such as Pleurotoma and Pyramidella. 



Tribe STENOMORPHINI. 



There is but a single genus assignable to this tribe, one of the most 

 isolated types of the subfamily as follows: 



Stenomorphus Dej. 



While the radical departure in habitus of this genus from the 

 others warrants a rather wide separation from more normal forms 

 of the subfamily, it is none the less truly a member of the Har- 

 palinae in all structural features, and its assignment to the Pogoninae 

 by Lacordaire was a decided error; but, in the early days, before 

 the discovery of criteria afforded by the supra-orbital setae, failure 

 to observe true relationships was quite excusable. The under 

 surface of the male tarsus was however erroneously figured on 

 Plate XII of the "Genera" by that author, joints 2-4 being depicted 

 as uniformly clothed throughout their under surface. In this genus 

 the tarsi are of a peculiar form, though recalling in their most 

 salient features those of Gynandropus. In the male, the first joint 



