THE HETEROMERA. 159 



produce T. obscurus ; whilst those from the west end 

 produce T. molitor. The two larvae appear to be super- 

 ficially much alike, except that in T. obscurus the colour 

 is darker, and the last segment is rather longer, with 

 more diverging terminal projections ; the pupae are not 

 enclosed in a cocoon, and have the six first segments of 

 the abdomen furnished with flattened parallel, truncate 

 appendages, the last segment being bifurcate. The larva 

 of T. molitor is eyeless, elongate, nearly cylindrical, ra- 

 ther attenuate behind, light yellow in colour, with fine 

 thin hairs on the sides, and marked with partly con- 

 fluent minute dark spots on the upper side ; the apical 

 segment is conical, and terminates in two slightly di- 

 verging projections, having a minute black spine on each 

 side. 



The perfect insects are dull pitchy-brown, elongate, 

 and rather flat, specimens often occurring of a light 

 reddish-brown colour. The inner lobe of their maxillae 

 is armed with a horny hook ; the apical point of their 

 maxillary palpi hatchet-shaped ; the eyes largest on the 

 under surface, and the anterior tibiae curved (especially 

 in the male). They sometimes fly to lamps, etc.; at- 

 tracted, like moths, by the light. 



The HELOPID^E are in England only represented by 

 a single genus, Helops, in which the inner lobe of the 

 maxillae has no hook, the antennae are slender, elongate, 

 with their penultimate joints longer than their width, 

 and the eyes transverse and narrow. Our species pre- 

 sent a certain superficial resemblance in miniature to 

 the form of Blaps, and this is most shown in H. caruleus, 

 the largest of them, a slowly-moving beetle, dull blue 

 in colour, sometimes found in clusters under the bark 

 of old felled trees, where its larva (which considerably 



