AMERICAN COLEOPTERA. 233 



Metasternum nearly or quite im punctate at sides 57. t'Oiifusuili. 



Metasternum punctured nearly evenly from side to side. 



58. angnstuiii. 



Size smaller on the average, though examples of a actum sometimes slightly 



exceed 2 mm 36. 



36. Outline strongly convex in profile, coarser punctures relatively much less 



conspicuous, those of the pronotum confined to the marginal region. 



(California) 40. 



Outline more flattened in profile, coarser punctures much stronger and more 

 numerous, those of the pronotum extending well onto the disk (ex- 

 cept in parvum) 37. 



37. Form more elongate, coarser punctuation fine and indistinct, color red 



brown, size small (1.75 mm.) 59. parvum. 



Form stouter, coarser punctuation moderately strong 38. 



38. Size very small (1.5 mm.), coarser punctures large and numerous. 



60. I urbidiim. 

 Size usually, much larger, coarser punctuation moderate 39. 



39. Metasternum more closely punctate at middle, evidently but very sparsely 



at sides 61. auctmu. 



Metasternum punctate at middle, the punctures completely disappearing at 

 sides 62. indistinctum. 



40. Brown, head sometimes a little paler, elytra parallel, lateral strije quite 



deeply and sharply impressed 63. exiguiini. 



Piceous black, head and thorax reddish, elytra feebly widening to the mid- 

 dle, lateral strise less pronounced 64. (iHmiIcIiiiii. 



1. C. puiictu latum Lee— Blackish brown, three-fifths as wide as long, 

 very convex, a little more pointed behind, distinctly gibbous in profile. Pubes- 

 cence sparse and fine; coarser punctures lacking or indistinct on the head and 

 pronotum, sparse but distinct throughout the elytra; no lateral stripe. Metaster- 

 num subequal in length to the second ventral segment, coarsely punctured 

 throughout. Tibiae not grooved. Eighth antennal joint slightly longer than 

 wide, quadrate triangular. Terminal joint of both maxillary and labial palpi 

 deeply emarginate or notched at apex. Length 1.8-2.4 mm. 



Hab. — Probably confined to the coast line of tropical Florida. 

 Specimens before me collected by Hubbard and Schwarz, and Wick- 

 ham bear labels Biscayne, Lake Worth, Jupiter, Caprou, St. Lucia, 

 Key West and Dry Tortugas. The LeConte type is from Tampa. 



The very convex form, short metasternum (apterous 1), deeply 

 emarginate terminal joints of palpi and non sulcate tibiae constitute 

 a combination of characters which make this an easily recognized 

 species. Dr. Horn (Coleoptera of Baja California) has united this 

 species with sedans. The error is evidently due to a wrong deter- 

 mination of a series of Texas specimens of sedans in the Horn col- 

 lection, these bearing the label punctulatum in LeConte's handwrit- 



TKANS. AM. ENT. SOC. XXXI. (30) JULY, 1905. 



