116 



TROGOSITID^E. 



I admit that further material is at all events desirable in ordei 

 ascertain whether the small diagnostic features which I alluded tc 

 in my description are constant. 



325. Lipaspis caulicola. 



Leipaspis caulicola, Wott., loc. cit. 142, pi. viii. f. 1 (1862). 

 Lipaspis caulicola, Id., Cat. Can. Col. 121 (1864). 



Habitat Salvages (ins. majorem, borealem) et Canarienses (Ten., 

 Hierro), intra caules Euphorbiarum putridos rarissima. 



Likewise of the greatest rarity, but peculiar (so far as observed 

 hitherto) to the Euphorbias within the rotten stems of which it 

 occurs, though very sparingly. A single example was taken by 

 myself in Teneriffe, from out of the putrid stalks of a E. canariensis, 

 on the mountains above S ta Cruz ; a-nd five more were obtained by 

 the Messrs. Crotch in Hierro (one of which they found at El Golfo, 

 and the remaining four. near Yalverde "under the bark of the 

 E. piscatoria and balsamifera" respectively). It differs from the 

 lauricola, mainly, in its smaller size, ferruginous hue, rather nar- 

 rower, less shining and more lightly striated elytra, and somewhat 

 slenderer legs. 



I have moreover received from the Barao do Castello de Paiva a 

 *single example which he procured from the Great Salvage. It 

 recedes a little from the Canarian ones ; but the differences are so 

 unimportant that I cannot consider them indicative of more than 

 a slight insular variety, which, however, I would here record as the 

 "var. (3. oceanica"*. I have placed the specimen in the collection 

 at the British Museum. 



Genus 106. TROGOSITA. 

 Olivier, Ent. ii. 19 [script. Trogossita] (1790). 



326. Trogosita mauritanica. 



Tenebrio mauritanicus, Linn., Syst. Nat. ii. 674 (1767). 

 Trogosita caraboides, Bridle, in Webb et Berth. (Col.) 71 (1838). 

 } Hart., Geolog. Verhaltn. Lanz. und Fuert. 140, 141. 



* This individual from the Great Salvage is a trifle narrower than the Cana- 

 rian ones now before me, with its head and prothorax (the former of which is 

 just perceptibly convexer, whilst the latter is somewhat more abbreviated) a little 

 less developed, and not quite so densely or coarsely punctured. Assuming it to 

 be typical of its race, it will suffice to record in the following short formula the 

 very slightly aberrant state of which it may be regarded as the exponent: 



Var. (3. oceamca. Subangustior, capite prothoraceque vix parcius leviusque 

 punctatis, illo paulo magis convexo, hoc sensim breviore. 



