Synopsi.1 of the Coleopterous Faniilij Cisidae (Cioidae) 11 



the eastern and weslern forms. The proportional length of 

 antenna! joints is variable, partienlarly between males and 

 females. They have, in the male, a fovea at middle of first 

 ventral segment. In a male, from Maine, this fovea is concealed 

 ])y a tnft of yellow hairs. The.se hairs seem to be wholly or 

 ])arlly removed in other specimens. The females closely 

 reseml)le Cis fuscipcs. The males are easily recognizable by 

 the large impressed space at apex of prothorax. 



TABLE OF CIS (DESCRIBED SINCE 1898) 



Bicolorcd species, witli well-defined markings on prothorax and elytra. 1 

 PiceoiKs or brown-colored species (paler when immature), without well- 

 defined markings 2 



1 — Straw yellow, maculate with piceous. Epistoma not punctured, 

 opake. Slightly elevated and subquadrate. Elytra with black at 

 base and transverse band at apical, third extending along suture 

 to apex. Length 1-02 mm. Cayamas, Cuba. I'lorida. 



superbus Kraus 

 Brownish yellow, m.aculate with blackish. Epistoma sparsely punc- 

 tured, broadly semielliptical. Elytra black at base and with two 

 spots posterior to middle. Length 1-05 mm. Victoria, Texas. 



bimaculatus Kraus 



Dark brown, maculate with yellow. Epistoma, with deep transverse 



groove at suture. Elytra brown at base, with apical two-thirds 



yellow; two elongate brown spots or clouds in front of declivity. 



Length 2 mm. Subopake, Tybee Island, Ga bicolor Dury 



2 — Larger species 2.50 mm. or over in length. Punctures single. Vesti- 



ture not serial in arrangement 3 



Medium sized species not over 2 mm. in length 4 



Very small species less than 1.50 mm. in length 5 



3 — Very large and convex. Elj'tral punctures fine and dense. Male 

 with strong secondary sexual characters on prothorax and first 

 ventral segment. Epistoma, with two flat, sharp processes. Length 



4-80 mm. Santa Rita Mountains, Ariz arizonae Dury 



Smaller, \ery convex. Elytral punctures sparser. Male sexual 

 characters on epistoma, which is angulate and deflexed at middle. 



Length 2.08 mm. Mobile, Ala lodingi Dury 



Short, broad, convex. Vestitiwc fine, long and conspicuous. Male 

 sexual marks at apex of prothorax and first ventral segment. Epis- 

 toma with two large, blunt, triangular processes. Length 2.06 mm. 



Indiana — Ohio cornula Blatch. 



Shaped like cornula. Vestiture coarser. Epistoma cjuadridentate. 

 Length 2.25 mm. Huachuca Mountains, Ariz huachucae Dury 



