134 GEO. H. HORN, M. D. 



the sides of the prosternuin for the lodgement of the antennse in 

 repose. Oomorphus has the eighth joint of the antennae much 

 smaller than either the seventh or ninth, after the manner of some 

 of the genera of Silphidse. 



Our species is about the size of the European, and seems to differ, 

 as far as the descriptions and figures permit comparison, by the sides 

 of the thorax being straight and divergent, the intervals between 

 the series of elytral punctures not being moderately densely punc- 

 tured, but by the presence of a single- series of irregularly placed 

 punctures. 



For this very interesting addition to our fauna we are indebted to 

 E. A. Schwarz, who collected them in some numbers at Biscayne, Fla. 



L,rPER.4L,TICA Crotch. 



Head oval, inserted nearly as far as the eyes, which are rather 

 prominent and slightly oval, front carinate between the antennae, 

 with flattened tubercles and a ti'ansverse sinuous line between the 

 eyes; labrum rather prominent, entire at tip; maxillary palpi not 

 stout, the terminal joint half the length of the preceding, acutely 

 conical. Antennae slender, longer than half the body, first joint 

 stout, second small, oval, third twice as long, joints three to ten equal, 

 eleventh longer. Thorax quadrangular, the angles distinct, and 

 with a small piliferous tubercle, disc convex, with a vague transverse 

 impression in front of the base ; scutellum triangular. Elytra ob- 

 long-oval ; epipleurae moderate in extent, reaching nearly the sutural 

 angle ; prosternum either narrowly separating the coxae, not visible 

 between them, but forming a tubercle at apex, in the latter case the 

 coxae absolutely contiguous, coxal cavities open behind. Legs mod- 

 erate in length, the femora all thickened ; tibiae slenJPr, not carinate 

 externally and without terminal spur; tarsi moderate in length, the 

 first joint of the posterior pair as long as the next three ; claws ap- 

 pendiculate and divergent ; body glabrous. 



It is generally admitted that the line of demarcation between the 

 Galerucini and Halticini is not very well marked. The form of the 

 posterior femora of the latter group, constructed for the purpose or 

 with the result of giving a saltatory power to the insect, has been 

 relied upon as the main point of distinction between the two series. 

 As a rule the Halticini have the anterior coxae well separated by the 

 prosternum, the reverse being the case in the Galerucini, but excep- 

 tions occur to the normal character in both gi'oups. It is also rare 



