62 RHYNCHOPHORA. 
series of moderately large punctures; the interstices broad, except at the tip, where 
they are unusually narrow. Legs stout; first joint of the tarsi short. Neither male 
nor female has any serial foveolation on the underside of the head. 
Eight specimens. 
I have named this species in honour of Dr. A. Senna, of Florence, who is well 
known for his zealous work on this family of insects, and who has recently revised the 
characters of the species of this most difficult genus. 
21. Rhaphirhynchus nitidicollis. 
? Brentus cylindricornis, Fabr. Ent. Syst. i. p. 494°. 
Nemorhinus cylindricornis, Schénh. Disp. Meth. p. 71°. 
Arrhenodes nitidicollis, Gyll. in Schénh. Gen. Cure. i. p. 328 *. 
Rhaphirhynchus nitidicollis, Boh. op. cit. v. p. 505°. 
Rhaphidorrhynchus nitidicollis, Senna, Ann. Soc. Ent. Belg. 1894, p. 610”. 
Hab. Costa Rica5—Sovuta America, Colombia®, Venezuela; ANTILLES, Guada- 
loupe 734°, 
We have not received any Rhaphirhynchus from Costa Rica. Dr. Senna does not 
say > on what evidence he records this species as occurring there. 
22. Rhaphirhynchus deceptor, sp. n. 
Mas. Angustus, nigro-eneus, subtus politus, supra thorace opaco; elytris ad suturam bistriatis, externe 
obsolete striato-punctatis, minus argute flavo-lineatis. 
Long. 14 millim. 
Hab. Nicaracva, Chontales (Janson). 
This species, though with no prominent characters, is really one that is not closely 
allied to any other. In the sculpture of the elytra it comes nearest to £. severini, 
Senna, from which it is extremely distinct by the narrow form, by the rostrum having 
no lateral apical dilatation, and by the spinous first joint of the antenne. From 
R. rothschildi and R. chiriquensis, which it resembles in form and appearance— 
except in the opaque pronotum—it is readily distinguished by the diminished sculpture 
of the elytra. 
The antenne are elongate, the basal joint arcuate beneath and bearing a spinous 
process. The rostrum is elongate, its superior armature well developed; the meta- 
rostrum rather long; the head narrow. The thorax is dul] above, elongate, finely 
strigose on each side in front. The elytra are rather short in comparison with the 
thorax ; the two strie next the suture are well marked; the outer series of sculpture 
are obsolete in the middle of the length, so that there the intervals are only distin- 
guishable by some obsolete punctures; at the base the third stria is, however, well 
marked, and beyond the middle all the strie are distinct; the yellow marks are not 
