96 SUBANTARCTIC ISLANDS OF NEW ZEALAND. [Colcoptcra. 



Mandibles a little prominent, feebly arcuate, acute at apex. Lnhrum transverse, 

 entire. Head oval, slightly narrowed behind. Eyes rather large and a little promi- 

 nent. Antennae filiform, as long as the head and thorax ; 1st joint stout, cylindric ; 

 2nd short ; 3rd rather longer than its successors, which are about equal. Thorax 

 usually longer than broad, as wide as elytra at the base, a little narrowed anteriorly. 

 Eh/tra oval or oblong, slightly convex, generally not sinuate near the apices. Legs 

 moderate. Tibiae spinose. Tarsi glabrous above, the first 3 joints of the anterior 

 in the males strongly dilated, triangular or cordiform, and subequal ; the 4 pos- 

 terior grooved externally. Claws finely denticulate, comblike, inwardly. Bodi/ 

 usually narrowed towards both front and rear. 



The above is my translation of Lacordaire's descrijrtion on page 342, torn, i. 

 Hist, des Ins. Coleopt. 



Calathus rubromarginatus, Blanchard. 



Nitid, fuscous ; i^alpi and antennae obscurely rufescent ; thorax broad, its 

 sides broadly rufescent ; elytra striate, interstices very smooth. 



Body broad, dark glossy brown. Head blackish, very slightly excavated near 

 each eye. Palpi reddish. Antennae brown, pubescent. Thorax very broad, flat or 

 hardly convex, with the posterior markings peculiar to this genus very little marked, 

 brilliant blackish-brown, its sides distinctly reddish. Elytra very slightly convex, of 

 exactly the same width as the thorax at the base, of a bright-brown colour, the lateral 

 margins reddish, with fine obsoletely punctured striae, interstices perfectly smooth. 

 Legs of the same colour as the body. 



This species in general form apjiroaches C. fuscus, Fabr., but the body is more 

 parallel-sided. 



Length, 10-11 mm. 



Hah. — Auckland Islands. 



Obs. — As I have not seen any species of this genus from the Auckland Islands, 

 an interj^retation of the old description is all that is available. 



Group ALEOCHARIDAE. 



Baeostethus, gen. nov. 

 Body very elongate. Head subrotundate, with a short narrow niuzzle. Thorax 

 cordate-quadrate. Elytra very short. Hind-body very elongate. Eyes minute. 

 Mentum very large, slightly emarginate in front. Labial palpi rather short ; 

 basal 2 joints cylindric, equally elongate ; 3rd slender and nearly the length 

 of the penultimate. Maxillary palpi setose ; basal joint small ; 2nd stout and 

 elongate, gradually thickened ; 3rd inserted at apex of the preceding one but so 

 as to be at a right angle to it, rather longer than 2nd, gradually incrassate towards 

 and truncate at the apex ; 4th joint small, aciculate. Mandibles stout, rather short, 

 acutely curvate at extremity, with 3 inner teeth. Antennae inserted at the sides 

 of the forehead, in front of the eyes ; basal 3 joints stout and elongate, narrowed 

 towards the base ; 2nd articulation a little shorter than 1st, but slightly longer 

 than 3rd ; 4th oblong ; 5th and 6th oviform ; 7th and 8th slightly broader than 

 preceding one; 9th and 10th subquadrate ; Uth oblong-oval. Tarsi filiform, the 

 posterior pentamerous, intermediate quadriarticulate, the anterior seemingly also 



