308 Appendix to the Proceedings 



spines ; middle tibiae with a strong spine projecting externally 

 near the apex, a smaller one behind it, and a row of minute 

 papillae or spines further back. 



2. S. Ajax, mihi. PI. XVI. fig. 5. 



Praecedenti afiinis, sed minor ; niger, subdepressus ; mandibulis 

 bidentatis, thorace brevioribus; thorace haud duplo latiore 

 quamlongiore; elytris elongatis, thorace fere triplo longioribus, 

 subquadratis, subparallelis, marginatis, pone medium paulo 

 dilatatis, subtiliter punctato-striatis, carina basali, dente hu- 

 merali, et carina longitudinali ex humeris orienti paratis, ad 

 basin et lateribus papulosis ; tibiis anticis tridentatis. 



Long. 18 lin., lat. 5j lin. 



Allied to the preceding, but smaller, and at once distin- 

 guishable by its snorter mandibles, which are not so long as the 

 thorax, and have only two teeth instead of six or seven ; by the 

 thorax not being twice as broad as long, and the exterior margins 

 not sloping so much inwards towards the tooth on the sides of the 

 thorax, so that the thorax looks rather more quadrate ; the ridge 

 running down the elytra from the shoulder has less appearance 

 of sinuation, though it is so slight in either, that it scarcely de- 

 serves to be spoken of; the impressions on the third stria seem 

 also different, the two posterior impressions being placed further 

 back; but, as they vary in different examples, and even on dif- 

 ferent elytra of the same individual, no great value can be placed 

 on this character. In other respects the description of S.Hercules 

 will apply to this. It is still more nearly allied to S. Feist - 

 hamelii, Laferte. It is, however, larger and more massive, the 

 striae on the elytra seem more defined and less punctate, and 

 the thorax is comparatively narrower, particularly in front, the 

 length of both being nearly the same (3 lin.), while the greatest 

 breadth in front of S. Feist hamelii is 4§ lin., and in Ajax 

 5J lin. 



It is possible that a larger series of specimens may show these 

 two to be the same species ; but, until we obtain this, I have 

 preferred to keep them distinct. 



3. S. Patroclus, mihi. 



Niger, nitidus, elongatus, subcylindricus ; mandibulis thorace 

 brevioribus, oblique corrugatis; mento corrugato, carina 

 media parato ; capite antice longitudinaliter corrugato, fronte 

 bifoveolato ; thorace parum convexo, sesqui latiore quam 

 longiore, lateribus antice fere parallelis, ad angulos posticos 

 leviter papilloso ; elytris parallelis, parum convexis, anguste 



