412 Major T. Broun on now 



are not .sufficiently so for generic separation from Pterostichus. 

 It must be located in the section having four or more setigerous 

 punctures on each side of the thorax. 



Pterostichus antennalis, sp. n. 



Elongate, slightly convex, black ; the legs and basal 

 three joints of the antennae piceous, remaining joints pale 

 castaneous. 



Head about as broad as front of thorax, very finely and 

 irregularly wrinkled, frontal impressions elongate; eyes only 

 moderately prominent, their orbits a good deal dilated below 

 and behind. Thorax 5 mm. long by 5^ broad, moderately 

 incurved medially at base and apex, anterior angles rounded, 

 its sides but little curved, and gradually slightly narrowed 

 behind ; the posterior angles, owing to the thickening of the 

 margins, appear minutely prominent ; its surface very finely 

 transversely striate, the base and apex longitudinally, discoidal 

 groove well marked and almost touching the apex, basal fossae 

 rather elongate, and with a second smaller almost sulci form 

 one nearer each side, the space between each of these latter 

 and the lateral margin seems convex but not cariniform. 

 Scutellum striate at base. Elytra elongate, oblong, but little 

 rounded laterally, distinctly sinuated behind, humeral angles 

 moderately dentiform and but little wider than the base of 

 thorax ; each elytron with seven more or less interrupted 

 stria?, all well marked at the base, the inner four rather more 

 regular and finer than either of the next two, each consists 

 of about twenty punctures or elongate impressions, the 

 seventh is made up of about twenty or more rather fine punc- 

 tures between the shoulder and posterior sinuosity. 



Femora medially dilated, the posterior strongly angulate, 

 so that the trochanter fits into the slender basal portion. 

 There are four setigerous punctures on each side of the thorax 

 and at the apex of the last ventral segment. 



The terminal four joints of the antenna are rufo-castaneous, 

 with a piceous central streak, which is broadly grooved, some- 

 times with a slender carina, and this dark longitudinal space 

 is marked off by the entire absence of the pubescence which 

 is so conspicuous on all but the basal three. This peculiarity 

 occurs amongst the allied species, but I have not seen any 

 record of it. 



In P. Icioisi the elytral striae are almost entirely made up 

 of elongated impressions, the seventh has only about seven or 

 ten ; two of these grooves sometimes occupy the whole space 

 between the hind thigh and subapical sinuosity. In the 



