140 'Entomological Papers. [No. 2. 



being at the same time gently dilated, the apex itself being ob- 

 liquely cut away from the outer towards the inner side (the inner 

 angle being the most advanced) and slightly dentated at the edge 

 thus formed. Or it may also be described as a fork with the outer 

 teeth somewhat enlarged, truncated at the apex and so forth. 

 As far as I know, this variation from the usual form of the men turn, 

 is repeated in no other Carabideous insect. The other parts of 

 the mouth have not much to distinguish them with the exception, 

 however, of the labrum, which attains a very extraordinary degree 

 of development, occupying rather more than one third of the ivhole 

 head, although the latter itself is large and heavy. It is of a sub- 

 orbicular shape, very slightly produced in front into an obtuse 

 angle, it is vaulted, covers the mandibles, has two longitudinal 

 impressions at the sides of the base and is highly polished. The 

 head has 2 impressions in front of the eyes, is densely punctured 

 and thinly pubescent, it is strongly but gradually contracted behind 

 the eyes and formed into a short neck. The antennae are strong 

 and reach to the shoulders, joints 1 3 and 11 are of about equal 

 length, middling, the former two subcylindric, joint 2 is small, 

 rounded, 4-10 subequal and with the 11th oval. The thorax is small 

 only half as large as the head, rather narrowed, strongly transverse, 

 twice as broad as long, slightly emarginated in front, the anterior 

 angles rounded, contracted below the middle, subquadratic and 

 prolonged at the base, posterior angles depressed, longitudinally 

 divided by a deep furrow. The elytra are striated and, like the 

 thorax, densely punctured and thinly pubescent. The legs are 

 strong, simple and subequal, the anterior tibia? are deeply notched, 

 the first joint of the tarsi is as long as the two succeeding ones 

 together, subcylindric, the 2nd triangular, the 3rd of a similar but 

 more transverse form, smaller — all three have the apical angles 

 accuminated, the 4th is large and deeply bilobed, the 5th middling, 

 thin, the claws simple. The tarsi are altogether short and strong, 

 the first joint is furnished with longer, the 2nd and 3rd with short- 

 er stiff hair, whilst the 4th is strongly penicillated below. The 

 anterior tibiae are slightly spinose, the others more so. 



I believe the only specimen of this insect which has hitherto 

 come iuto my possession, and which has served as a type for the 

 above description, to be a female. 



