Leng: Diplotaxis on Staten Island 199 



SMALL SPECIES 



3. Thoracic angles not impressed; much smaller. 



Front with moderate or strong post-clypeal convexity. 3A. 



Front with at most a very broad or feeble post-clypeal convexity. 3B. 



3A. Basal margin of thorax not or scarcely impressed towards the 



hind angles, 8-9 mm. Ga., S. C, Fla. frontalis Lee. 



Basal margin of thorax rather strongly impressed, especially 



towards the base, 8-9 mm. S. C, Ga., Fla., La., N. J.(?) 



excavata Lee. 

 3B. Clypeal margin more or less distinctly angulate, each side of the 

 median sinuosity or truncation ; upper tooth of front tibia dis- 

 tinctly ante-median in position, hind tarsi scarcely or but very 

 little longer than the tibia, 6.5-8 mm. N. J. to Texas. 



frondicola Say. 

 Clypeal margin convex in outline from side to side, or with the 



middle truncate or subtruncate for a small distance. 



Base of prothorax without marginal impressed line, 6.2-7.7 mm. 



Ga., Fla. and N. J. (Alice-Liebeck collection.) bidentata Lee. 



Base of prothorax distinctly impressed along margin, 7-10 mm. 



N. Y. to Tex. harperi Blanch. 



Of the above named species sordida and atlantis are included 

 on account of actual Staten Island captures; liberta, frondicola, 

 and harperi on account of actual captures nearby in N. J. and 

 further because Staten Island is within the recorded range of 

 those species — rugosioides recently described by Mr. Charles 

 Schaeffer from N. H. is said by Prof. Fall to be the correct name 

 for a specimen I obtained at South Pines, N. C, and it may there- 

 fore occur with us; tristis is a northern species and it is very 

 doubtful if we shall ever find it here. The specimens heretofore 

 called tristis are atlantis; frontalis is possibly the correct name 

 for the excavata cited in Prof. J. B. Smith's New Jersey List. I 

 have included both to call attention to their differences ; bidentata 

 is included on account of the Liebeck record in the New Jersey 

 List but it is to be noted that outside of the New Jersey records 

 all three, frontalis, excavata, and bidentata, are southern insects. 

 Of the species cited in the New Jersey List — sordida, liberta, 

 frondicola are confirmed — atlantis and Jmrperi are added ; while 

 tristis, excavata, and bidentata are questioned. There remains 

 one more, truncatula which is known only from Texas and Kan- 

 sas and is so evidently an error that I have not included it at all. 



