38 PROCEEDINGS OF THE ACADEMY OF 



finely and irregularly punctate; A'cntral surface and thoracic 

 epipleurae hardly punctate. L. .40. Atlantic region, Arizona. 



2. C. cobaltinus, Lee. Pac. R. Rep., p. 07. 



Extremely close to the preceding, but entirely of a deep-blue 

 color or blue-green; clypeus closelj'^ punctate. L. .40-.41, Cali- 

 fornia, and Oregon. 



Three other species are described hy the Rev. T. A. Marshall 

 (J. Linn. Soc, viii. p. 449). 



C. californicus, bluish-green (not dark-blue), thorax broader, 

 more gibbous at the sides. L. 8 lin. (= cobaltinus, Lee.) 



G. tenibricosus, black tinged with blue, thorax not gibbous or 

 dilated at the sides. L. 5 lin. (? cobatinus var.) 



C. cantaneus^ chestnut-colored, beneath testaceous; thorax 

 transverse, very slightly dilated, denselj^ covered with two sorts 

 of punctures ; elytra substriate punctate, (immaturus.) 



Typophorus, Chev. 



Thorax lobed behind the eyes, head broad, antenna" distant, no 

 ocular sulci, antennae long filiform, second joint verj' short, third 

 longer than the fourth, posterior tibiae produced at the apex. 



1. T. tricolor (Fab.), Ent. Syst., i. 316, 41: viridis, Fab. Syst. EL, i. 413, 8; 



picipes, 01. 



Oblong, sub-parallel, above green or bronzed, beneath brown, 

 legs and antennae pale-red ; head closel3' punctate, clypeus raised 

 on a level above the front ; thorax closely punctate, sides very 

 little rounded,, slightly explanate, disk with a smooth space to- 

 wards the base; el3tra irregularly rather coarsely punctate; under 

 side scarcelj' punctulate, thoracic epipleune closely punctate. 

 L. .20-24. Middle and Southern States. J* Apex of elytra 

 slightly mucronate, fifth segment foveolate. 



2. T. metasterualis, sp. n. 



Very similar to the preceding, but elytra more sparsel}' punc- 

 tate, subcastate ; ventral segments and metasternum closely and 

 deeply punctate. L. .22. Illinois. 



3. T. oregonensis, .=p. n. 



A^ery closely allied to T. tricolo?-, but distinct b}^ the well-marked 

 hind angles of the thorax, which is also more sparsel}' and more 

 strongly punctate; the ventral segment and metasternum are 



