CARABID^E. CALATHUS. 79 



The more rounded lateral margins of the thorax and the 

 deeper basal impressions, together with the less rounded and 

 dilated sides of the elytra and its uniform dark colour, sufficiently 

 distinguish this insect from either of the preceding. 



It is a mountain species, but rather rare. I have captured 

 the insect on several occasions on the high moors near Llan- 

 gollen, in August and September : it is found also in Scotland 

 in similar situations. " Near the summit of Hedgehope in 

 July," Mr. Hardy. 



8. C. nubigena : subapterus, niger; thorace quadrate, antice sub- 

 angustato, basi utrinque leviter impresso ; elytris oblongis, 

 subparallelis, striatis, punctis 3 vel 4 impressis ; antenna- 

 rum basi pedibusque rufescentibus. (PI. I. f. D.) 



Haliday, Ann. N. Hist. 2. 112 (1839). Curtis, Guide, 53. 5. 

 Oblong, black, elytra sometimes with a greenish gloss. Head 

 small and narrow, palpi and antennae pitchy, three joints at the 

 base of the latter and the extreme tip of the former reddish. 

 Thorax quadrate, narrowed in front, sides scarcely rounded, but 

 again very slightly contracted just before the posterior angles, 

 which are obtuse, dorsal furrow very faint, base with two oblong 

 rather parallel, shallow foveee. Elytra oblong, subparallel or with 

 the sides very slightly rounded, distinctly striated, the three striae 

 nearest the suture are carried to the apex, the fourth joins the 

 third by a slight curve before the apex, the fifth and sixth are 

 abbreviated and unite behind the middle, the seventh is carried 

 round the others and joins the third at the extremity, the eighth 

 is carried quite round to the tip and always bears a series of 

 remote round impressed punctures from the shoulder to almost 

 the extremity, each elytron has likewise four distinct impressions, 

 placed one at the junction of the first and second striae near 

 the scutellum, and three on the third stria about the middle, 

 sometimes however these are partially or wholly wanting and 

 occasionally there are two smaller punctures on the second stria 

 nearer the apex ; breast and thorax on the underside pitchy, ab- 

 domen shining black, legs rufescent. Length 3 lines. 



This insect appears to be variable in colour ; of the three 

 examples now before me one is shining black with the tip of the 

 palpi and of the mandibles, the basal joint of the antennae and 

 the legs red, the breast and thorax on the underside being pitchy ; 

 in another individual the thorax is red beneath and pitchy above ; 

 while in a third it is wholly red and the palpi entirely and three 

 joints at the base of the antennse ferruginous red, which varia- 

 tions do not apparently result from different degrees of maturity 



