18/6.] MR. M. JACOBY ON NEW COLEOPTERA. 815 



Although this insect is at the first view only distinguished from 

 the preceding species by its larger size, the above details, especially 

 the strong punctuation and dark colour of the head, I think, justifies 

 the making it a distinct species, moreover as all the specimens in my 

 collection agree exactly in every particular. 



17. Typophorus humeralis, Baly, var. rufa. 



Ovate, convex, base of the antennae fulvous. Head, very convex 

 and shining, finely punctured, together with the thorax black. Elytra 

 unicolorous, rufous, which colour extends sometimes over the entire 

 thorax. 



Length 24 lines. 



Hab. Guatemala. 



Collected by Mr. Salvin. 



As this species agrees in every thing with T. humeralis of Dr. Baly 

 (described in the Annals of Natural History, 1859), except the colora- 

 tion, I consider it a mere variety of this species, which, to my know- 

 ledge, has not yet been described. 



18. Typophorus quadriplagatus, sp. nov. 



Ovate, moderately convex, light flavous. Head without a groove 

 near the eyes, which are rather closely approximated, strongly punctate 

 on the vertex, flavous ; antennae of the same colour, with the excep- 

 tion of two or three middle joints, which are a little darker. Thorax 

 of the usual shape, strongly but not closely punctured. Elytra a little 

 narrower at the base than behind the middle, with ten rows of 

 strongly punctured striae ; the intervals slightly raised, of a light fla- 

 vous colour ; each elytron ornamented with two black spots, viz. one 

 on the extreme margin a little before the middle, and a second larger 

 one in the middle, exactly between the margin and the suture. 

 Underside dark brown, as well as the last third of the femora ; the 

 rest, with the legs and tarsi, testaceous. 



Length 2 lines. 



Hab. Amazons. 



In my collection. 



19. Typophorus minutus, sp. nov. 



Ovate, convex, black-brown, shining. Head very convex, without 

 any trace of a transverse groove, but with a slight depression in the 

 middle, upper part distinctly and closely punctured ; first five joints 

 of antennae flavous, the rest black. Thorax nearly as long as broad, 

 with the sides much contracted towards the anterior margin, and the 

 posterior one a little sinuate, more or less distinctly punctured, scu- 

 tellum oblong, smooth. Elytra strongly punctate-striate ; the first 

 striae assuming the form of a continuous line towards the apex and 

 parallel with the suture. Underside and legs black. 



Length 2 lines. 



Hab. Rio Janeiro. 



In my collection. 



By its minute 6ize and the uniform coloration of all the parts, which 



