4 RHYNCHOPHORA. 
so that the two porous projections have only a narrow channel between them. The 
metasternal fossa is shorter ; the post-sternum not definitely foveolate. 
Six specimens; of the variety I have seen only one individual. 
3. Taphroderes tostus, sp. n. 
Niger, pronoto posterius rufescente, ibique opaco ; elytris lineis duabus rectis flavis in medio late interruptis. 
Long. 15 millim. 
Hab. Guarema.a, Cerro Zunil (Champion). 
We have received only one specimen of this species, which appears to be distinct 
from both 7. rectus and T. mevicanus, though very closely allied. In the sulcation of 
the under surface it agrees with the latter species, but by the form of the yellow lines 
on the elytra it agrees better with 7. rectus; from both species 7’. tostus may be readily 
enough distinguished by the dull red colour of the posterior part of the thorax, and 
by the coarse punctures which exist on the middle of this opaque part of the surface. 
4, Taphroderes apicalis, sp. n. 
Angustus, niger, capite thoraceque medio rufescentibus ; elytris basi lineis duabus flavis, apice flavo quadri- 
plagiatis, apicibus subexplanatis. 
Long. 54-11 millim. 
Hab. Nicaracua, Chontales (Belt, Janson); Panama, Bugaba, Volcan de Chiriqui 
(Champion). 
Very closely allied to 7. rectus, but readily distinguished by the colour of the upper 
surface and by a slight difference in the form of the apices of the elytra; it is, too, a 
somewhat less elongate insect. Head vaguely rufescent or picescent ; thorax rufescent 
along the middle, very distinctly so in front. Elytra black, marked on the basal part 
with two elongate, nearly parallel, yellow marks; just behind the middle with two 
yellow marks, each broad in front, narrower behind, and at the apex with a smaller 
mark somewhat prolonged externally; the apices forming conjointly an arch not at all 
angulate in the middle. Under surface similar to that of 7. rectus, but with the 
abdominal sulcus less broad behind; the middle tooth in front of metasternal fossa very 
indistinct. The poststernum foveolate. 
Seven specimens. 
§2. Metasternum sulcate ; metasternal crest simply curved, crescent-shaped. 
5. Taphroderes beltianus, sp. n. (Tab. I. fig. 2.) 
Robustior, nigricans, hinc inde rufescens; elytris guttis flavis ornatis ; abdominis sulco posterius profundo ; 
metasterno fossa, post cristam, parum profunda. 
Long. 9-19 millim. 
Hab. Nicaracua (Sallé), Chontales (Belt, Janson); Panama, Bugaba, Volcan de 
Chiriqui (Champion). 
