166 ENTOMOLOGICAL SOCIETY 
that region. It is numbered 1535 and was collected in Los 
Angeles Co., Cal., by Mr. Coquillett. A specimen evidently 
belonging to this same species is in the U. S. National Mu- 
seum from the same locality, but has lost its abdomen. 
I have not seen the Ccelioxys (C. rufitarsis, C. moesta and 
C. tristis) recorded by the Abbe Provancher. 
NEW SPECIES OF SPHENOPHORUS WITH NOTES ON 
DESCRIBED FORMS. 
BY F. H. CHITTENDEN, Sc. D. 
In three earlier papers on this genus, published in the 
Proceedings of our Society, 1 the writer has treated as many 
groups. There remain to be reviewed several more or less 
pecfeetly denned groups and a number of isolated species and 
other forms which do not possess easily discernible characters 
indicative of their position in a natural arrangement of the 
entire series. In the present paper the simplest forms, based 
on the structure of the tarsal joints, will be considered first, 
and those forms in which the third joint of the anterior and 
sometimes median tarsi are widest will be discussed later. 
Some questions of nomenclature will be taken up, as economic 
workers frequently inquire in regard to these matters, and 
it is preferable to have these questions considered in a technical 
paper. 
Sphenophorus marinus, new species. 
Of similar form to incequalis; smaller and less robust; surface opaque 
black, with antennae, tarsi, and lateral margin of the elytra piceous. 
Rostrum two-thirds as long as thorax, stout, moderately arcuate, 
strongly punctate in basal three-fourths, especially coarse at the base, 
and finely sparsely punctate at apex, which is very slightly dilated but 
compressed and prolonged posteriorly into an acute point, strpngly dilated 
over scrobes but scarcely more compressed than at apex. Head strongly 
but somewhat sparsely punctate. Eyes with a fine reflexed posterior 
margin, separated from the head by a strongly impressed wide extra- 
orbital line. 
Thorax longer than wide by about the shortest diameter of the apical 
constriction ; posterior two-thirds with sides nearly parallel ; base strongly 
arcuate. Surface very coarsely, moderately, deeply and very densely 
to confluently punctate, leaving a distinct but irregular elevated median 
line, not quite attaining either apex or base and occasionally slightly 
interrupted; a few punctures coalescing near sides posteriorly, forming 
J See Volume xn, p. 50, 1905. 
