96 
Psyche 
[April 
over the elytra, enhancing the resemblance to ferruginea, from 
which it differs principally as indicated in the key. The pro- 
sternum seems to be slightly broader between the coxse in that 
species, and the median groove of the pronotum is much less 
distinct at base. 
Helmis simplex n. sp. 
Moderately stout, subparallel; dull black, with a pinkish- 
gray tinge below; tarsi, trochanters, and antenna? rufous, latter 
a little paler toward the base; palpi infuscate. Head dull, with 
scattered dead-black granules on a uniformly muddy back- 
ground. Pronotum barely wider than long; sides subparallel, 
slightly more narrowed in front than behind; disk regularly con- 
vex, without carinse, and with the barest trace of a longitudi- 
nal impression at base; disk evenly, sparsely, and finely punc- 
tate and pubescent. Elytra together about one half longer than 
wide; four inner striae almost completely obsolete; third interval 
not prominent; disk finely and sparsely pubescent, opaque, 
smooth near the suture, with several rows of granules externally 
the most prominent on the seventh interval. Length 1 . 9-2 . 0 
mm. Width 0.8 mm. Holotype and twelve paratypes with 
same data as H. minima. 
The most distinct and perhaps the most constant of the 
four species described. The affinities are probably toward H. 
quadrata, the general form of which is closely imitated, buft the 
relationship is not very close in other ways. 
After the preceding portion of the paper had been com- 
pleted, a small lot of West Indian Helmis was received for study 
through the kindness of the authorities of the United States 
National Museum. Of the three species involved, one, rep- 
resented. by three specimens labeled “Grenada, W. I., Aug. 
Busch Collector” is undoubtedly H. smithi Grouvelle, described 
from the same island in 1898 (Notes fr. Leyden Mus., XX, p. 47). 
This insect is closely related to H. ferruginea Horn, but is sep- 
arable as previously indicated. The difference in the thoracic 
carinse is not very marked, but is supplemented, as Grouvelle 
said, by one in the median, longitudinal groove of the pronotum, 
