Mr. Wcstwood on the Affinities of Clinidiwn. 217 



beyond the menturn. The lower lip is attached to the inside of the 

 mentum, and is very minute and triangular; \h& palpi are rather long, 

 and composed of three joints of nearly equal length, the first of which 

 is slender, the second rather thicker at the tip, and the third the thickest, 

 especially in the middle, with the tip acute (Ibid. E.) The mentum is 

 very large and horny, and occupies the whole of the under side of the 

 head ; its front is produced into three points, the medial being the most 

 advanced ; it is covered on the outside with punctures (Ibid. A.), and is 

 fleshy on the inside where the lower lip and maxillae are attached to it. 



The anterior angles of the thorax are rounded, and the place of the 

 insertion of the head is narrower than at its base, although, as Dalman 

 observes, the base is narrower than the front part of the thorax. 



The femora of all the legs are thickened ; the tip, however, of each 

 is slenderer, being hollowed beneath to receive the slightly incrassated 

 base of the tibiae in the manner represented in fig. 1, K. and L. 



The tips of the four posterior tlhicB are slightly clothed with hairs on 

 the inside, and are rather thicker than the rest of the joint. They are also 

 furnished with tv.o spines of unequal length on the inside, so that when 

 the leg is laterally observed, the tip of the tibia appears to be emargi- 

 nate (Ibid. fig. I.) The tip of the cubiti or anterior tibiae is, however, 

 different, having the inner edge produced at the tip, both above and be- 

 low, into a bent obtuse spine, below each of which there is a much 

 smaller spine, and the surface between these spines thus appears both 

 above and below to be emarginate and ciliated (Ibid. F. G. and H.) The 

 formation of these parts is not satisfactorily detailed in the account of 

 Clinidium. 



Having thus endeavoured to supply the description of the characters 

 omitted by Dalman, I now proceed to trace the various points of resem- 

 blance and disagreement between the two genera. 



If we regard general appearance or habit, as well as size, we are im- 

 mediately struck with the resemblance between the insects ; indeed it is 

 even carried so far as to exist in the singular sculpturing of the head and 

 thorax. 



If we regard natural habits, we find them similar, Dalman describing 

 the Rhysodes as collected in numbers by PaykuU " in ligno putrido abie- 



