84 MANDIBULATA. — COLEOPTERA. 



Ca. scrobiciilatus. i^'aZinVzw*.— PI. scrobiculatus. Steph. Catal. No, 119. 



Head blacky with two light red spots : antennae and palpi rufous : thorax with 

 three impressed lines, the central one reaching to the base_, the others not : 

 elytra striated, the striae smooth, narrow at the tip ; three impressed dots 

 towards the centre : legs rufous. 



There is a specimen of this insect in the collection at the British 

 Museum, taken by Dr. Leach, near Ashburton, in Devonshire. 



Genus XXXIV. — Sphodrus, Clairville. 



Palpi rather elongate, filiform, terminal joint oblong-ovate, truncate, shorter 

 than the third : labrum quadrate, transverse, entire : mandibles slender, elon- 

 gate, denticulated at the base : mentum with a bifid tooth in the centre of its 

 anterior notch : labium with elongate lateral appendages. Antennce Hnear, 

 the third joint about three times as long as the second : head porrect : thorax 

 obcordate-truncate, depressed, margined : elytra entire : wings two, or rudi- 

 mentary : anterior tarsi of the males with four dilated joints. 



The genus Sphodrus is readily known by the great length of the 

 third joint of the antennse, which, in one of the species, is upwards 

 of three times as long as the second ; and by its elongated, filiform, 

 palpi. The males are further discriminated by having four dilated 

 joints to their anterior tarsi. The genus appears to be allied to 

 Platynus, but the transition from it to Agonum is less natural than 

 could be wished. Both species frequent cellars and close subter- 

 raneous passages. 



Sp. 1. leucopthahnus. ISigro-piceus , Icevis, subdepressus , elytris subtiliter punc- 



tato-striatis. (Long. corp. 10—12 lin.) 

 Ca. leucopthalmus. Linne. — Sp. leucopthalmus. Steph, Catal. No. 120. 



Pitchy-black, slightly shining, head black, smooth : thorax above depressed, 

 the margin sometimes rufescent, the disc obsoletely strigose, with a slight 

 longitudinal channel, an arcuated transverse impression, and a large fovea at 

 the base on each side near the hinder angle: elytra oblong-ovate; depressed, 

 rather duU pitchy-black, slightly striated, the striae very obsoletely punctate, 

 the second from the margin with a series of large impressions : body beneath 

 black, or pitchy : legs, mouth, and palpi pitchy : basal joints of the antennae 

 black, the rest brownish. 



The posterior legs of the male are furnished with a long spine, arising from the 

 trochanters. 



Not an uncommon species in several parts of the outskirts of the 

 metropolis, frequenting cellars, outhouses, and stables, subsisting 

 probably upon the hosts of Blattse with which the subterranean 

 apartments of London abound. 



