456 Mr. A. Murray on Coleoptera from Old Calabar. 



impressions on the third stria, the first about a third from the 

 base, the next rather more than a third from the apex, and the 

 last between this and the apex, but furthest from the latter. A 

 ridge runs from the base to the shoulder, and terminates in a pro- 

 minent tooth; it is not greatly curved, and just within the tooth a 

 ridge commences, running nearly parallel to the sides of the elytra, 

 but converging a little; it has a scarcely perceptible sinuation near 

 the base, and disappears before it reaches the apex. Traces of a 

 row of punctures inside this ridge are visible near the base, and 

 the stria next to it is the deepest. Under side shining ; the back 

 part of the head below is irregularly and pretty closely punctate. 

 Mentum very concave ; middle part with a deep rounded hole 

 (about the size of a pin's head) on each side of the middle ridge, 

 which forms the apex of the middle tooth ; a double line (connected 

 here and there) runs up the middle of the back part of the head, 

 terminating in front in two punctures ; one puncture, or two 

 combined into one, lies immediately behind the posterior angles 

 of the mentum ; projection of prosternum smooth and rounded, 

 with traces of three faint lines behind, the two marginal ones 

 diverging outwards. In one specimen which I possess, this 

 projection is slightly depressed in the middle. One distinct 

 puncture on the posterior coxse, also two punctures on each of 

 the segments of the abdomen, one on each side of the middle, 

 besides shallow depressions along the sides, and transverse 

 wrinkles more or less distinct ; the last segment has also an- 

 other puncture on the margin, a little exterior to the other two. 

 Anterior tibiae tridentate, without denticulations behind ; under 

 side of the palmate portion with a number of papillae or small 

 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. XII. fig. 5. 



Prsecedenti affinis, sed minor ; niger, subdepressus ; tibiis anticis 

 tridentatis ; mandibulis bidentatis, thorace brevioribus ; tho- 

 race baud duplo latiore quam longiore; elytris elongatis, thorace 

 fere triplo longioribus, subquadratis, subparallelis, marginatis, 

 pone medium paulo dilatatis, subtiliter punctato-striatis, ca- 

 rina basali, dente humerali, et carina longitudinali ex humeris 

 orienti paratis, ad basin et lateribus usque ad apiceni papil- 

 losis. 



Long. 18 lin., lat. 5^ lin. 



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

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

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



