10 



APPENDIX. 



In external fades, sculpture, and hue this insect is so like a Calathus 

 that, were it not for its simple claws, it might almost be mistaken 

 for one. However, it is clearly a large Argutor (or Haptoderus, 

 Chaud.), of much the same type (both in general contour and in the 

 fact of its posterior tibiae being slender and simple in both sexes) as 

 the A. gracilipes of Madeira, though most abundantly distinct from 

 it specifically. It was discovered by the Messrs. Crotch at a high 

 elevation in the laurel- districts of Gomera, " above the cataract, 

 under Monte Fuerte." 



Genus CRATOGNATHUS. 

 Dejean, Spec. Gen. des Col. iv. 46 (1829). 



Cratognathus empiricus, n. sp. 



G. micanti valde affinis sed, nisi fallor, vere distinctus ; differt pro- 

 thorace postice sensim latiore, basi levius bifoveolato, per latera et 

 basin (oculo fortiter armato) angustius marginato, angulis anteri- 

 oribus paulo magis porrectis, acutioribus : in superficie (prsesertim 

 fcemmei) minus polita cum varietate /3 (" Sanctae-Crucis"), sed in 

 elytris tenuiter striatis cum statu typico melius congruit.' Long, 

 corp. lin. 4|-5. 



Habitat in humidis sylvaticis Gomerae, a DD. Crotch nuper lectus. 



Several examples of the Cratognathus from which the above dia- 

 gnosis has been compiled were taken by the Messrs. Crotch in Gomera, 

 near the base of the great waterfall in the sylvan region above Her- 

 migua (at an elevation of about 2000 feet). Although at first sight 

 closely resembling the C. micans of that island, it seems to me, when 

 carefully inspected, to differ too much from the latter to be safely 

 treated as a mere local state, or modification, of it. Yet I would not 

 wish to imply positively that such may not be the case. In its less 

 shining surface (particularly of the female sex) it accords better 

 with what I have described as the " var. /3, Sanctae Crucis," found in 

 Teneriffe ; whilst, on the other hand, the fine and delicate striae of 

 its elytra are more in harmony with the normal Gomeran type. 

 From both forms however (namely, the Gomeran and Teneriffan 

 ones) of the micans it recedes appreciably in the construction of its 

 prothorax, which is a little broader behind, more narrowly mar- 

 gined along its lateral and basal edges, with its posterior foveae less 

 deeply impressed, and with its front angles rather acuter or more 

 porrect. 



Genus AEPYS. 

 (Leach) Sam., Usef. Camp. 149 [script. Aeptis] (1819). 



