CERAMBYCID/E 215 



It is almost certain that truncatulus and apiciventris, in spite of 

 their uniformly pale elytra, belong to the pacificus group of vittate 

 species ; this group, which seems to be peculiar to the maritime parts of 

 California, is somewhat more inconstant in elytral ornamentation 

 than either the more northern virgatus or the eastern trivittatus. 

 Rufipennis andflaccidus, which are mutually closely allied, are in a 

 measure intermediates between the virgatus and pacificus groups, 

 and the aureatus group. Haldeman's entire description of vestitus 

 is quoted above, and, as can be seen, it is totally ambiguous and 

 useless; it is probable also that the original type has not been pre- 

 served, the name for many years having been applied to all the con- 

 spicuously pubescent Pacific coast species having uniformly pallid 

 elytra. As its habitat is much more boreal than that of any above 

 noted, except oregonensis, which is much larger, it probably has 

 not been redescribed in the table. Obtusus Lee., is a peculiar type, 

 and from the fact that brevicollis is founded on the male and obtusus 

 probably on the female, it might be conceived that the former is 

 at most a subspecies of the latter; but there are so many incongrui- 

 ties, generally not sexually diverse, notably the long pubescence 

 of the head and prothorax in brevicollis, that there cannot be very 

 mych doubt, apparently, of the distinctness of the latter. The 

 female elytra in forms having strongly tapering male elytra, are 

 not "parallel" in any other known species, though very nearly so 

 in the subgenerically different cinnamopterus. 



Mr. Leng (Ent. Amer., 1890, p. 68) notes a form of vestitus, which 

 he names ater; as it is not described this must be considered purely a 

 manuscript name. If the elytra are wholly black, there can be but 

 little doubt that closer observation would prove it to be a different 

 species, as variation in the genus seems to assume the diminishing 

 form rather than intensification of elytral coloration. 



Group IV. 

 Subgenus Anisorus Muls. 



The only species of our fauna entering this subgenus, which comes 

 very close to being a distinct genus, is the Toxotus cylindricollis of 

 Say (dentipennis Hald., and dives Newm., also var. atratus Hald.), 

 rather widely distributed in the Atlantic regions but not at all com- 

 mon. The prothorax distinctly tapers from base to apex and is 



