286 Mr. C. O. Waterhouse on new 



front, more narrowed behind ; the disk more convex, almost 

 swollen into a tubercle laterally. Elytra very strongly punc- 

 tured at the base, sparingly and more obscurely punctured 

 beyond the middle, scarcely sinuous at the apex, the sutural 

 angle very slightly obtusely dentiform ; each elytron has a 

 slightly raised yellow y-shaped spot, the side nearest the 

 suture the shorter ; there is a distinct impression within the 

 shoulder, another near the suture, a slight one before the 

 yellow spot; and the posterior declivity is also much impressed. 

 The antennas are testaceous, with the four basal joints black, 

 the extreme base of the fourth is yellowish. 

 Hab. Macas. 



Carabidae. 



Calojjhccna alboguttata, n. sp. 



Nigra, nitida ; elytris cyaneis, fortiter striatis, ad apicem truncatis, 



vix spinosis, guttis quatuor albis notatis. 

 Long. 6 1 lin. 



Completely resembles C. aculeata, Chaud., in colour, size, 

 and form, but has the sutural angle of the elytra not prolonged 

 into an acute spine. The elytra appear to be a little longer ; 

 the strias are very deep, the intervals very convex j the spots 

 are small ; the apex of each elytron is truncate ; the truncature 

 is not straight, but slightly sinuous ; its outer angle acute, the 

 sutural angle acute but scarcely produced. 



Hab. Copataza River. 



Cucujidae. 



Palcestes mgriceps, n. sp. 



Niger, nitidus, thorace femoribusque ochraceis, elytris dimidio basali 



flavis. 

 Long. 5|-7| lin. 



This species resembles P. bicolor in form, but differs in 

 having the head and scutellum black. Besides this difference 

 of colour it is distinguished by having the thorax more angular 

 in the middle of the front margin, and the sides have not the 

 deep incision immediately before the posterior angles as in P. 

 bicolor. The scutellum is a little less transverse. The im- 

 pressed line on the metasternum is continued to the front j in 

 P. bicolor it appears to be always abbreviated. The femora 

 have the extreme base and apex black. 



I have only seen the male of this species, which has the 

 mandible developed in the same way as in P. bicolor. 



Hab. Chiguinda. 



