BLackBURN AND SHarP—On some New Species and Genera of Coleoptera. 163 
This, and C. apicalis and C. concolor, were sent me by Mr. Blackburn as No. 
342, and were found in different localities (not specified) in Hawaii. Though I 
have seen only one individual of each, they appear to me to be distinct species ; 
and I give the description of C. apicalis, though Mr. Blackburn may prove to be 
right in considering it a variety of C. setarius. 
DAS: 
Cis concolor, n. sp.—Parum elongatus, angustulus, nitidus, niger, antennis 
pedibusque testaceis, femoribus nigris; elytris sublevigatis, setis elongatis, tenuis- 
simis parcissime adspersis. Long. 13 m.m. 
Antenne yellow, slightly obscured towards the apex ; thorax very sparingly 
punctate ; elytra almost impunctate, with a few obscure inequalities on the basal 
portion. The setz towards the sides are so few and fine, that they are not very 
easily observed. Although closely allied to C. setarius and C. apicalis, the speci- 
men described is smaller, narrower, and less convex, and has the prosternum 
undoubtedly more elongate in front of the coxe. 
Hawaii. 
D.S. 
[I see Dr. Sharp regards the three specimens of Cis, sent to him by me under 
the number 342 (vide supra), as representing three distinct species. As regards 
C. concolor, I am disposed to accept the correction, and think that I had not 
attached sufficient importance to the difference in build, which certainly seems to 
distinguish that insect; but I am unable to acquiesce in the separation of the other 
two. I have specimens, coloured and punctured as C. apicalis is said to be, in 
which the elongate sete are very well defined, and when the distinction of villosity 
is removed I see no other well-marked difference to separate C. setarius from it. 
There exist in the Hawaiian islands a number of types of Cis closely allied to 
C. bicolor, Sh., and which I cannot satisfactorily distinguish from that insect. 
C. bicolor, Sh., therefore, I regard as a widely distributed and variable species, 
from which I do not see my way to separate C. tabidus, Sh. The following, there- 
fore, would appear to me a desirable appendix to the description of C. bicolor, Sh., 
Trans. Ent. Soc., 1879, Part 1. p. 93 :— 
‘“‘ This insect is extremely variable, and occurs throughout the Hawaiian Archi- 
pelago. Its size varies from 14 m.m., to24m.m. The specimens from Kauai 
(C. tabidus, Sh.) are a little shorter and broader than the type, and more obscurely 
coloured and punctured. Oahu specimens are usually of the form described, but 
vary in the direction of the punctuation, becoming faint, especially in the front of 
the thorax, and the markings being more or less obliterated or intensified—the 
extremes of marking, so far as known, being testaceous or fuscous, with obscure 
indications of some of the usual markings, and thorax and elytra almost entirely 
suffused with black. 
