192 Dr. Brendel's Descriptions of JVeic PselapMdse. 



Two specimens have been found ; one in Tennessee and the other in 

 Washington, P. C., the latter kindly presented to rue by Mr. Henry 

 Ulke. 



4. Bryaxis perforata, n. sp. — Nigro-picea. polita, pubescens, capite 3-foveato, 

 antennis breviusculis, thorace lsevi, 3-foveato, foveis cequalibus magnis, ely- 

 tris striis dorsalibus integris, abdomine segmento dorsali primo maximo striis 

 abbreviatis distantibus, postice medio elevato, segmento secundo in medio ad 



basin foveato. Long. 1.5 in. m. 



Hub. — Nov. Eboraeum (New York). 



This species^ belong to the neighborhood of B. dentata. It is 

 much smaller, dark, shining. The head and thorax are smooth, pu- 

 bescent, 3-grooved, the grooves are large and equal, the thorax is of 

 equal dimensions, convex, subangulate, rounded. The elytra are pi- 

 ceous, shining, the striae are all entire, the dorsal striae converging. 

 The abdomen is short, the first segment behind in the middle elevated 

 nearly angulated, not overhanging the next segment ; the abbreviated 

 striae are distant, well impressed. The secoud segment is deeply groov- 

 ed in the middle of the base, somewhat depressed each side. The first 

 ventral segment is very large. The antenna? are short, the first joint 

 is cylindrical, equal in thickness with the second, which is oblong, 

 rounded, the 3 — 5 equal, smaller, nearly globular, the 6th is a little 

 larger, 7 — 8 the smallest, globular, 9 — 10 gradually thicker, uot long- 

 could never have tasted salt water. The present species comes from East Ten- 

 nessee and approaches nearer to B. abdominalis than to floridana. 



This series of varieties reminds me very much of the standard series of Cic- 

 indelicke in the beautifully arranged collection of my friend Ulke, who takes 

 so many varieties in his collection that nobody would find out the difference 

 between the two next neighbors, but it' you follow them up, you have at the 

 end of the series a different species, which is nothing but a climatical variety. 



Mr. Henry Ulke's collection is a truly scientific work, and the envied posses- 

 sor and creator of it should give us. who are far from him. at least a slow of 

 his Cicindela-series by writing an Essay on climatical varieties and species, or 

 something like it, for he is the only man in Columbia, who has the material 

 to do it. 



Other Bryaxes, as the rubibunda, shows just as many, but not so decided va- 

 rieties. Bryaxis puncticollis and propinqua run into each other by varieties. 

 The Batrisus-series of scabriceps, globosus, etc. up to md even 



ens and spretus, though they present a very different aspect, might in future be 

 connected by apparent varieties. 



Batrisus monstri ox and cristatus differ too little for clear species. Of 



others I need only mention the Northern and Southern form of Ctenis 

 ijus and Zimmermanni) and Pselapkus Erichsoni and longiclavus.) l>ut notwith- 

 standing, those rarieth - should be carefully designated and described. 



