648 BOSTON JOURNAL 



nutely punctured ; head and thorax with a hardly perceptible 

 tinge of green. 



Length over three-tenths of an inch. 



The specimen is probably a female. It is smaller than the 

 0. tmirus Linn., the female of which it resembles in the form and 

 disposition of the lines of the clypeus. It is much larger than 

 0. latehrosus Fabr., from the female of which it differs consider- 

 ably in the form of the elevated lines of the head, but agrees in 

 having a thoracic prominence ; this prominence, however, is more 

 obvious, and widely emarginate. 



2. 0. VIRIDICATUS. — Green ; clypeus bidentate ; elytra 

 smooth. 



Inhabits United States. 



Scarahseus smaragdulus Fab. Melsh. Catal. 



Body robust, green ; head bidentate at tip ; antennae black- 

 ish ; thorax on the lateral edge a little angulated before the mid- 

 dle; elytra smooth, impunctured, or with [174] three or four 

 hardly perceptible impressed lines ; beneath dark green. 



Length nearly one-fifth of an inch. 



Certainly not smaragdulus of Fab., but it is related, in point of 

 size and form to Coj)ris suheeneus Pal. de Beauv., of which, how- 

 ever, he remarks, " Clypeo integro, transverse bicarinato," and 

 " ses ^lytres sont d'un noire terne, les stries peu marquees, et une 

 rangee de points elevesentre chacune," which prove it to be very 

 different from our species. 



[A species of Cantlion previously described as Ateuchus viridls 

 Beauv. — Lec] 



o. 0. OVATUS Fabr. 



Our specimens are subject, like the European, to vary consid- 

 erably in magnitude and some other characters ; but I have not 

 observed any trait which can justify the separation of it from the 

 Fabrician type. 



Var. a. — Elevated linesof the clypeus obsolete or entirely want- 

 ing. 



Var. (i. — Anterior elevated line of the head obsolete. 



Var. y. — Head bidentate before. 



Var. S. — Posterior elevated line of the head interrupted in the 

 middle. 



[Vol. I. 



