100 GEO. H. HORN, M. D. 



case the penultimate joint is bisetose in front and in the latter plurisetose. 

 In the genera allied to' Oodes 119, 120, 121, I have not found any 

 setae except in EvoJenes 122, nor in Ch/senius pensylvanicus 115, and 

 Glyptus 133. 



The entire groups Dryptini, Grraphipterini, Anthiini, 

 Zabrini and nearly all the Harpalini have the penultimate joint 

 plurisetose. The same character also occurs exceptionally in other tribes. 

 The character seems to be an important one and has been useful in 

 several of the tables. 



Prothorax. — The form of the thorax plays but a subordinate part. 

 The obliteration of the lateral margin in Apotomus seemed to Schaum 

 to be very important but the same occurs in several remote genera, as 

 Agra and Camonia. The basal lobe by its presence has been useful 

 in the L e b i i n i. The special setae of the side margin are nearly as 

 important as those of the head. In those genera with two supra-orbitals 

 we can safely expect two at the side of the thorax one being in the hind 

 angle, where there is one supra-orbital that of the hind angle is wanting 

 except in Bradt/ceUiDi and some few allied genera. All the Oodini, 

 Anthiini, Grraphipterini, Cratocerini, Orthogonini 

 and GIt/ptus have no lateral setae that I can discover nor trace of 

 punctures from which they arise. 



ScuTELLUM. — This is never large, sometimes entirely concealed 

 ( Omophron), and in the pedunculate genera confined to the peduncle. 

 Its form is usually triangular. 



Elytra. — These organs by their form play an important part in the 

 Harpalinje, in accordance with the form of the apex whether entire, sinu- 

 ate or trujicate, also the structure of the base whether margined or not. 

 The internal phca, which will be more fully explained further on, has 

 been recognized by Bedel in his tables, but its full import does not seem 

 to have been recognized. Its use seems to be, to hold the elytra more 

 firmly together by an interlocking with the margin of the abdomen. 



The elytral sculpture is of course very variable, the normal form is 

 nine-striate but the stride in Cychrus far exceed this number. Some- 

 times the eighth and ninth striae are confluent or nearly so as in Oodes. 

 The eighth on its outer side bears ocellate punctures which in very 

 recent specimens bear long setae as shown in Fsydrus, (PI. lY, fig. 1). 

 The ocellate punctures are wanting in our Panagaeini, in Apotomus 

 and many Carabinfe. 



Prosternum. — The modifications of this portion have proven 

 especially useful in the Carabinae as will be seen by reference to 



