172 Buacksurn AND SHarp—On some New Species and Genera of Coleoptera. 
y p 
elongate thorax, and without the large black mark on the side of the elytra. The 
differences between the sexes are almost the same as in P. vestitus. 
A pair of this species, found on the island of Lanai, has been received as No. 478. 
D.S. 
Proterhinus integer, n. sp. 
elytrisque rufis, his nigro-signatis; densius parum maculatim vestitus, setulis 
Sat elongatus, nigricans, antennis, tibiis tarsis 
erectis sat conspicuis; prothorace lateribus rotundatis, anterius haud abrupte con- 
stricto, minus evidenter tri-impresso; elytris haud ineequalibus, humeris acutis. 
Long. 3 m.m. 
This species appears about equally allied to P. vestitus and to P. sternalis; it 
is distinguished from the former by its more elongate form, more abrupt antennal 
club, considerably larger eyes, less abruptly constricted and less impressed thorax, 
more acute humeral angles, and rather larger tarsal lobes. It agrees with P. ster- 
nalis in the structure of the antennz, and in the larger eyes, and also in that, on 
very careful examination, there may be detected traces of the curved elevation 
extending from the shoulder of the elytra, but it is of much less abbreviate form, 
has much smaller tarsal lobes, and more rounded sides to the thorax; the humeral 
angles of the elytra are much prolonged, as in P. sternalis. 
The description is made from two males agreeing closely, except for a slight 
difference in size. Mr. Blackburn has sent as the female (or rather under the 
same number, a female) an insect differing in many particulars; the form is 
shorter and broader, the eyes smaller, the white ashy clothing is replaced by a 
scanty yellower setosity, and the erect sete are shorter, the punctuation of the 
elytra is conspicuous, and they have no trace of the large lateral black mark. I 
think it more probably the female of another species. 
Found on the mountains of Lanai. 
D.S§. 
Proterhinus detritus, n. sp.—Elongatus, sub-parallelus, brevissime setulosus, 
parum squamosus, ferrugineo-obscurus, elytris nigro-maculatis; prothorace lateri- 
bus parum rotundatis, subrectis, anterius abrupte constricto, parum argute im- 
presso, rugoso-punctato; elytris crebre fortiter punctatis. Long. 31 m.m. 
This appears to be a very distinct species, although I have only a single male 
individual to base this opinion on. The antenne are entirely red, rather elongate 
and slender, with the two basal joints much incrassate, the second rather longer 
than broad, the third quite slender and elongate, three times as long as broad, the 
club very little marked, slightly longer (joints nine to eleven) than joints three to 
five. Rostrum short and broad, covered with depressed scale-like hairs quite to 
the front, head but little dilated over the insertion of the antennz, eyes rather 
