360 NEW SPECIES OF CARABIDEOUS INSECTS. 



a genus upon two species of Carabidce forming part of a col- 

 lection placed in my hands for description by Mr. Darwin ; 

 but upon studying Mr. Curtis's paper, I found that they pos- 

 sessed all the essential characters of his genus Cardiophthal- 

 mus. The chief differences between the insects of this genus 

 and those of Odontoscelis, consist in the central tooth of the 

 mentum being bifid; the legs and antennad much longer; the 

 great length of the spines with which all the tibidR are furnished 

 at their apex, and the proportionately narrower thorax^ com- 

 bined with the short, ovate and convex form of the body. — 

 The anterior tibicB are somewhat suddenly dilated at the apex 

 (in the two species before me), and the external portion is 

 slightly produced. The anterior femora in the species de- 

 scribed by Mr. Curtis, is furnished with three or four small 

 angular projections on the under side and near the base. I 

 find the same character in one of the specimens before me, 

 but in two other specimens (one of which is decidedly the 

 same species as the first) there is merely a slight unevenness 

 on that part of the femur ^ — possibly therefore it may be a 

 sexual character : in the structure of the anterior tarsi there 

 is no difference — they are all slender, and destitute of velvet- 

 like pads or membranous appendages beneath. 



Sp. 1. Card. Clivinoides, Curtis, Linn. Trans, xviii. part 2 

 page 185, plate xv. fig. C. 



Sp. 2. Card, longitarsis. Suppl. Plate xix. fig. 2. 



Card, nitide niger, obscure viridi tinctus ; thorace, elytrisque convexis : 

 elytris laevissime striatis. 



Thorax elytris angustior, lateribus rotundatis sic et marginibus, at leviter, 

 postice aliquanto attenuatus; sulco dorsali obscurissiiuo et post hunc 

 nota transversa insculptus. Elytra ad marginem externum seriatim 

 punctis, necnon segmentum abdominis ultimum, ad marginem posticum, 

 notata. 



Length, 11 lines ; length of thorax 3 lines; width of ditto, 

 3 J lines : length of elytra 6 J lines ; width of ditto, 4J lines : 

 posterior tarsus very nearly 3f lines. Head about one third 

 narrower than the thorax, the eyes but slightly prominent. — 

 Thorax considerably narrower than the elytra, convex, the 

 sides and posterior angles rounded ; the dorsal channel in- 

 distinct; a distinct transverse impression near the hinder 

 margin. The thorax is rather attenuated behind, and its 

 broadest part is in the middle, or rather anterior to the mid- 

 dle. Elytra very convex, ovatej rounded at the apex ; very 

 faintly striated, the stricd impunctate. General colour black, 



