ANISOTOMID^. AGATHIDIUM. 179 



Known by the rufous humeral spot, and the irregular striae on its thickly 

 punctate elytra. 



I once met with this insect abundantly in an Agaric, at the end 

 of June, in a wood near Greenhithe, Kent : it has been taken in 

 Norfolk, Devonshire, the New Forest, &c. " Netley."" — Rev. F. 

 W. Hope. 



Sp. 26. abdominalis. Nigra, nitida, subtus rujb-picea, elytris regulariter punc- 



tato-striatis, inter stitiis sublaevibus. (Long. corp. 1^ — 1| lin.) 

 Anis. abdominale. Paykul. — Le. abdominalis. Steph. Catal. Appendix. 



Above glossy-black, beneath rufo-piceous : head small, smooth; mouth testa- 

 ceous; eyes brown: thorax very convex, faintly and sparingly punctured 

 throughout, with the lateral and posterior margins externally ferruginous, 

 pellucid ; elytra entirely of a glossy black, regularly and distinctly punctate- 

 striated, the interstices throughout finely and obsoletely punctulated : body 

 beneath shining pitchy-red, punctured, abdomen rufo- testaceous : legs mo- 

 derate, rufo-ferruginous. 



Known from the preceding by the absence of the red spot at the base of the 

 elytra, and by the regularity of the striae on their disc. 



The only indigenous specimen I have hitherto seen of this species 

 I obtained from the north of England, since my Catalogue was 

 printed off. I believe it was captured in Cumberland. 



Genus CXI. — Agathidium, Illiger. 



Palpi filiform ; maxillary with the last joint conic : labial small : mandibles with 

 the apex acute. Antenna? short, with a subovate, triarticulate, club: head 

 rather large, in flexed : thorax with the angles rounded, large, the sides inflexed: 

 body globose-hemisphaeric, contractile into a ball : elytra entire, laterally in- 

 flexed: legs short; tib ia? setose; tarsi tetramerous, the joints entire. 



Agathidium, which resembles Leioides in several respects, may be 

 readily known by the difference in the structure of the antenna?, — 

 the eighth joint not being smaller than the seventh, and the three 

 last forming a subovate club ; which, however, varies a little in the 

 different species ; — and from the facility these insects possess of 

 rolling themselves up into a ball when alarmed : they inhabit putrid 

 wood and fungi, and may be occasionally found in sand and gravel 

 pits, into which they fall by accident. 



Sp. 1. ruficolle. Globosum, nigrum, thorace antennis pedibusque rufis, elytris ob- 

 solete vageque punctulatis. (Long. corp. 1 — 1^ lin.) 

 Dermestes ruficollis. Marsham.—Ag. ruficolle. Step/i. Catal. p. 69. No. 749. 



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