APPENDIX. 19 



respects; for out of 171 individuals which I have examined, I can 

 see no tendency to any aberration worth recording. 



Tarphius humerosus, n. sp. 



T. subquadrato-oblongus, crassus, granulis maximis squamisque 

 fuscis rugose et densissime vestitus necnon setulis brevibus fuscis 

 parcissime irroratus ; prothorace brevi, transverse, ad latera ante 

 medium rotundato, postice oblique subrecto ; elytris ad humeros 

 ipsos late exstantibus, distincte nodosis (nodis concoloribus, sed 

 subter squamis paulo rufescentibus) ; antennis pedibusque brevi- 

 bus, rufo-piceis. Long. corp. lin. 2, 



Habitat Gomeram sylvaticam excelsam, rarissimus. 



The thick, squarish-oblong, and very coarsely granuled body of 

 this Tarphius, in conjunction with its dull brown, thickly scaly, but 

 almost unsetose surface, and the tolerably developed nodes of its 

 elytra (of which the humeral angles are very prominent, and which 

 therefore exceed far in breadth at their extreme base the posterior 

 region of the prothorax), will sufficiently distinguish it. Its pro- 

 thorax (which is short) has the sides evenly rounded before the 

 middle, but rather straightened (though obliquely so) behind ; and 

 its limbs are somewhat abbreviated. The only three examples of it 

 which I have seen were taken by the Messrs. Crotch in Gomera, in 

 company with the preceding and following species. 



Tarphius affinis, n. sp. 



T. praecedenti similis, sed vix minor et angustior, granulis minoribus 

 (tamen magnis) vestitus setisque longioribus subdemissis densius 

 (tamen parce) adspersus; prothorace sensim longiore minusque 

 transverso ; elytris ad humeros minus exstantibus necnon ubique 

 levius nodosis, in limbo grossius serratis. Long. corp. lin. 1^2. 



Habitat Gomeram, haud infrequens, una cum praecedentibus degens. 



Twenty examples of this Tarphius were taken by Dr. Crotch and 

 his brother at a high elevation in the laurel-districts of Gomera, in 

 company with the other species here enunciated. It is a good deal 

 allied to the T. humerosus, but is a trifle smaller and narrower ; and 

 the granules with which it is everywhere densely beset, although 

 large and coarse, are not so large as in that insect. Its setae, also, 

 though remote, are longer and more conspicuous; its prothorax is 

 a little less abbreviated, and not quite so transverse ; and its elytra, 

 which are considerably less nodose, have their humeral angles less 

 prominent (or developed). 



b2 



