PtinidcB of the Canary Islands. 199 



Its elytra, however (which have their basal plaits still less de- 

 veloped), are more densely pilose, as also very much more deeply 

 striate-punctate, and with their two fasciae usually pretty distinct, 

 — even the anterior one being nearly always tolerably conspicuous. 

 It is evidently extremely rare, the few specimens which I have 

 seen (only nine in number) having been captured by myself in 

 the damp woods above the Agua Mansa, and (amongst the Re- 

 tamas) on the Cumbre adjoining the Canadas above Ycod el Alto. 



4. Casapus radiosus, n. sp. 

 C niger ; prothorace picescenti, antice vix dilatato, costis discali- 

 bus magnis elevatis, lateralibus subobsoletis, dense (prassertim 

 in nodis et ad basin) fulvo-squamoso ; elytris ovalibus, basi 

 valde truncatis, profunde substriato-punctatis, pilis rigidis 

 minus elongatis ubique et setis densioribus ad basin (prae- 

 sertim ad humeros) obsitis, costulis 6 basalibus (postice 

 evanescentibus) sat elevatis, fasciis duabus fractis [sc. ante- 

 media et postmedid, pleruraque subsequaliter distinctis] 

 albido-ornatis ; antennis pedibusque subelongatis, gracilibus, 

 rufo-ferrugineis, squamosis. 

 Long. Corp. lin. 1|. 



Habitat in montibus Canarise Grandis, sub lapidibus, rarissimus. 

 The C. radiosus, which, so far as I have observed hitherto, is 

 peculiar to Grand Canary, is a good deal allied at first sight to the 

 preceding species. It differs from it, however, as well as from 

 the C. dilaticoUis, in its limbs being a trifle slenderer, and in 

 having the two dorsal ridges of its prothorax (which is scarcely 

 at all expanded in front) powerfully developed, whilst the lateral 

 ones are sub-obsolete ; as well as in the basal costse of its elytra 

 (although not large) being more sharply defined and numerous, — 

 there being indications of a smaller intermediate one on each ely- 

 tron, between the ordinary (humeral and submedial) ones. Indeed 

 there are traces of even another small ridge, between the sub- 

 medial one and the place of the scutellum ; so that the general 

 appearance of the basal region of the elytra of the Casapus is that 

 of a series of alternately larger and smaller radiating, or divari- 

 cating, short plaits (or costse), which quickly become evanescent 

 behind. In its deeply striate-punctate elytra and the tolerable 

 distinctness of both of its fasciae it has more in common with the 

 C. alticola than with the dilaticoUis ; but its erect pile is rather 

 shorter and more rigid than is the case in either of those insects. 

 The few specimens from which the above diagnosis has been com- 

 piled were captured by myself, beneath stones, on the mountains 

 above San Martao in Grand Canary during the spring of 1858, 



