VOL. IV.] The Species of Amblychila. 221 



strongly serrate. The central area forming the disc inside the 

 carinse has at the base on each side of the suture four broken 

 rows of muricate punctures, which are reduced to two rows at 

 the middle, then reduced to one row and entirely obsolete before 

 reaching the apex. In the space between the carina and the 

 first raised line are alternate rows of muricate punctures, 

 beginning at the base with two and increasing to four rows 

 apically, but all becoming obsolete on the apex. Between the 

 first and second line, the space is occupied by two or three rows 

 of muricate punctures; between the second line and the real 

 margin are from two to four rows of the same kind of punctures 

 as before mentioned, but on the epipleural portion near the apex 

 are some minute punctures without points, spines, or mucrons or 

 bristles, but all the other punctures carry a bristle or stiff hair. 

 The reasons for considering this species Picolominii Reiche 

 are numerous. It agrees in the main with the descriptions by 

 Reiche and Thomson and also with the latter's figure though by 

 some oversight he calls it cylindriformis Say, while it is 

 a good portrait of the insect described above. Reiche says: 

 "The only specimen I ever saw was a female." Now what 

 has become of that insect or where is the specimen that furnished 

 Thomson with his figure? The reasons for considering Baroni 

 as the male of Picolominii are: It is of the same color, has the 

 same kind of puncturing, and is wanting only in carina and 

 complete raised lines; these, however, can be traced by close 

 analysis. At the base of the elytra in Baroni the beginnings of 

 raised lines are visible and the method of their formation is 

 plainly discernible. The spines on the front margin of the 

 punctures being depressed and fused into a continuous line by 

 contact with their nearest neighbors, the keel formation begins. 

 This is easily traced in Baroni but it being the male form there 

 is not the same necessit)' for keels and carinae as there is in the 

 female, of which sex Picolomi)ui seems to be. Cyli7id/i/ormis 

 Say has little relation as a species to Baroni or Picolominii; the 

 coloring and the style of ornamentation differ. In the former 

 species the elytra are usually brownish, but in the latter black 

 is the color. In the former two kinds of punctural markings are 

 always present while in the latter there is but one uniform style. 



