CARABINE. PTEROSTICHUS. Ill 



Thorax subcordate, sides very much rounded and dilated in front, 

 contracted behind, posterior angles acute, the entire base distinctly 

 punctured and with an oblong punctured impression or narrow 

 fovea on each side. Elytra oblong-ovate, much wider than the 

 thorax, shoulders regularly rounded, sides very gradually widen- 

 ing and rounded about the middle, then insensibly narrowed 

 again and the apex rounded, the disk convex, strongly striated, 

 the striae most distinctly punctured, the outer striae less deeply 

 punctured and less profoundly impressed than the others; 

 the underside of the thorax punctured on the sides, legs red, 

 sometimes pitchy. Length 3 lines. 



The principal characters which distinguish this insect from 

 strenuuSj which it so nearly resembles as to be constantly con- 

 founded with it, consist in the distinct punctuation at the base 

 of the thorax and its more rotundate form in front, the wider 

 and more oval form of the elytra and its more deeply punctured 

 striae. 



This species is rather scarce. Stephens remarks that it is 

 " common in the London districts, in Scotland, &c.," but that 

 observation must be considered applicable rather to the next 

 species, which he appears to have confounded with it, the two 

 species being mixed up in his collection, though the description 

 given is to be referred to the present insect. The species re- 

 corded by him as interstinctus is identical with it, and its localities 

 given are " Hertford and Southend in the spring." I have taken 

 it in Eridge Woods near Tunbridge Wells in the autumn, and a 

 black variety near Hebden Bridge and in the neighbourhood of 

 Newark. 



21. P. strenuus : nigro-piceus, nitidus ; thorace subquadrato, 

 postice utrinque striato, angulis postids acutiusculis ; elytris 

 striatis, striis subtilissime punctatis ; antennis pedibusque 

 rufo-piceis. 



Car abus strenuus, Panz. Faun. 38. 111. Kafer, 1. 185. 

 Argutor strenuus, Steph. Mand. 1. 105, et Manual, p. 30. 



Heer, Faun. Helv. 66. 

 Pterostichus strenuus, Erichson, Kafer, 74. 

 Harpalus pullus, Gyll. Ins. Suec. 4. 429. 

 Feroniapulla, Dej. Spec. 3. 254; Icon. 3. 41. pi. 130. 

 Argutor pullus, Steph. Mand. 1. 105, et Manual, p. 31. 

 A. diligens, Steph. Mand. 1. 104, et Manual, p. 30. 



This insect closely resembles erythropus, but is usually rather 

 smaller and narrower. The thorax is less dilated at the sides 

 and more gradually contracted behind, the posterior angles being 

 also a little more acute and prominent ; the base of the thorax is 



