PCECILID/E. 



3! 



(38) 3. ** Argutor mandibularis. Mandibular Argutor. 



A. fmandibularis) nitidus, subtus niger, supra nigro-cencus ; mandibulis, palpis, pedibus, antennisque scapo, rvfis ,• prothorace 

 obcordato, postics utrinque sulculo impresso ; eh/tris bifoveolatis, striatis : striis punctatis. 



^Mandibular Argutor, glossy, underneath black, above black-bronzed ; mandibles, palpi, legs, and scape of the antennae, ru- 

 fous ; prothorax obcordate, with a basilar furrow on each side ; elytra with two punctiform impressions, fur- 

 rowed, furrows punctured. 



Length of the body 3J lines. 



Taken in Lat. 54°. 



DESCRIPTION. 



Body glossy, underneath black 3 above black-bronzed. Mandibles, palpi, scape of the antenna, 

 and legs rufous, or rather pale-chestnut ; frontal impressions rather wide : prothorax truncato-obcor- 

 date, with a basilar furrow on each side and a few punctures at the posterior angles : elytra lightly 

 furrowed with punctures in the furrows; two punctiform impressions in the usual situation, one a 

 little beyond the middle of the elytrum adjacent to the second furrow, and the posterior one near the 

 apex adjacent to the third. 



Variety B. Black above with the whole antennae rufous, elytra piceous. Perhaps an imma- 

 ture specimen. 



(39 J 4. * Argutor brevicornis. Short-homed Argutor. 



A. 'brevicornis J ater nitidus, antennis masculis prothorace brevioribus pedibusque rvfis ; prothorace obcordato basi utrinque 

 sulculo impresso; eh/tris trifoveolatis straitis: striis punctatis. 



Short-horned Argutor, glossy, very black, male antenna? shorter than the prothorax, and the legs rufous ; prothorax obcor- 

 date, with a little basilar furrow on each side ; elytra with three punctiform impressions ; furrowed, furrows 

 punctured. 



PLATE VIII, FIG. 3. 



Length of the body 3 lines. 



Taken in Lat. 65°. 



DESCRIPTION. 



This with the preceding species, in the shape of the prothorax, which is obcordate, departs a 

 little from the others. A. brevicornis resembles A. mandibularis in many respects, but the body is 

 black, as are also the mandibles and palpi ; the antenna? of the male are shorter, and those of the 

 female not longer, than the prothorax; one of these organs in the latter sex, in the only female 

 specimen taken, appears to have been affected by some disease, for the two last joints are larger than 

 the preceding ones, so as to form a kind of knob ; it is the right-hand antenna that is so circum- 

 stanced : the little furrows at the base of the prothorax are wider than in A. mandibularis ; the 

 elytra of the male have three, and those of the female four, punctiform impressions all adjacent to 

 the third furrow. The eight last joints of the antennas in this species have less down and shine 

 more than is usual with the ground-beetles in general. 



