from the Galapagos Islands. 37 



Section RHYNCQPHORA. 

 Family Anthribid^e. 

 Ormiscus*, nov. gen. 



Rostrum very shorty transverse, truncated in front ; the mandi- 

 bles rather prominent and sharply pointed. 



Head shorter than broad, its vertex on the same plane with the 

 rostrum. 



Eyes large, prominent, converging in front, and contracting the 

 forehead to about half the width of the head ; emarginated 

 below. 



Antenna springing from a little round cavity immediately beneath 

 the eye ; if extended backwards they would reach the posterior 

 margin of the thorax, or extend perhaps slightly beyond that 

 part ; the joints most of them slender ; the first joint nearly 

 hidden ; the second thicker than the following six joints, and 

 nearly globose ; the third joint slender and the longest, but 

 shorter than the two following joints taken together ; the fomlih 

 to the eighth inclusive obconic, becoming successively shorter ; 

 the three terminal joints dilated, closely joined, and together 

 forming an ovate club. 



Thorax rather broader than long ; contracted, and subtruncated 

 in front, broadest near the posterior margin, and convex in the 

 transverse direction ; with an obtuse ridge at the side, but con- 

 fined to the hinder part, and a curved transverse ridge behind ; 

 this ridge is very distinct ; in the mesial line of the thorax it 

 nearly touches the hinder margin, but from that part it ascends 

 as it runs outwards, so that it is somewhat distant from the 

 posterior angle ; the hinder margin straight, and the posterior 

 angles right angles. 



Scutellum very small. 



Elytra rather broader than the thorax; short, subcylindrical, 

 rounded at the apex, and with the humeral angles obtuse. 



Legs moderate ; tarsi as long as the tibiae ; the first and fourth 

 joints long and nearly equal ; the second and third rather short, 

 the latter distinctly bilobed at the extremity ; the lobes equal. 



Ormiscus variegatus. Orm. ater flavescenti-tomehtosus ; capite tho- 

 raceque rugosis ; elytris seneo-micantibus, indistincte punctato- 

 striatis, pube alba, flava et fusca variegatis ; postice macula fusca 

 communi cordiformi ; singulo prope medium fascia obliqua ornate ; 

 antennis articulis basalibus ad basin, tibiisque flavescentibus ; femo- 

 ribus piceis, ad basin pallidioribus. — Long. corp. 1 lin. 



Var. (3, Elytris rufescentibus, marginibus maculaque transversa prope 

 medium nigrescentibus. 



* 'Og^/ffxo.c, a small necklace, a collar. The little insect here described 

 has a curved ridge crossing the back part of the thorax, a character not 

 peculiar to it, but which is more distinct here than in most others of the 

 jinthribida. 



