22 RHYNCHOPHORA. 
different from the dull blue colour of that species, and the punctuation of the thorax is 
rather more scanty. There is but little difference in the punctuation of the elytra; the 
legs are brassy-black in colour. 
16. Rhynchites pusillus, sp. n. (Tab. I. fig. 18.) 
Niger, supra subcyaneus, tenuiter pubescens, sat nitidus ; prothorace dense fortiterque punctato, elongato; elytris 
seriatim sat fortiter punctatis, interstitiis minus angustis. 
Long. cum rostro 23 millim. 
Hab. Panama, Bugaba (Champion). 
This species is in sculpture rather similar to 2. confertus, but differs in its dark blue- 
black colour and in the longer and more slender thorax. At first sight it is still more 
like the European &. nanus, but the thorax is longer and narrower and much more 
densely punctate. From R. guatemalenus the species is chiefly distinguished by the 
very dense punctuation of the thorax, and by the less obsolete punctuation of the 
elytra. ‘Two examples. 
17. Rhynchites thesaurus, sp. n. 
Auratus, nitidus, tenuissime pubescens ; rostro, antennis, pedibus, pectore abdomineque nigro-subeeneis ; protho- 
race elongato, crebrius fortiter profundeque punctato; elytris seriatim fortiter punctatis, interstitiis latis, 
haud omnino planis. 
Long. cum rostro vix 24 millim. 
Hab. Mexico, Teapa in Tabasco (ff. H. Smith). 
This insect is very closely allied to &. debilis, but it does not agree in colour or 
punctuation with it or with any other species of the group; and, besides this, it has 
the vertex less sparingly and obsoletely punctate. The punctuation of the elytra on 
the disc is not obsolete. The only two examples received have a short rostrum; yet ! 
fancy they are of opposite sexes, as there are some slight differences in the form and 
punctuation of the thorax, as well as a small distinction in the length of the front part 
of the rostrum. 
18. Rhynchites chiriquensis, sp. n. 
Late cyanens, nitidiusculus, pedibus eneis, rostro anterius antennisque nigricantibus ; parce obsoleteque punc- 
tatus, fere levigatus. 
Long. cum rostro 24 millim. 
Hab. Panama, Volcan de Chiriqui 4000 feet (Champion). 
Of this distinct and beautiful little insect we have received only one example, 
probably a female. It differs from all the other allied species by the diminished 
sculpture, more polished surface, and beautiful colour. The rostrum is long and 
slender, about equal in length to the head and thorax; shining black in front, behind 
the antenne enescent, the vertex cyaneous. Antenne small, slightly brassy. Thorax 
