10 BULLETIN OF THE LIVERPOOL MUSEUMS. 
Head and pronotum closely and distinctly punctulate and opaque, the 
punctures on the head being somewhat larger than those on the pronotum. 
Pronotum widest between the middle and the anterior margin, its sides there 
being distinctly arcuate, while from the middle to the base they are almost 
rectilinearly convergent ; its length along the middle a little greater than its 
width across the base. Elytra rather strongly sulcate, with the interstices 
convex and somewhat closely punctulate. 
This species is most nearly allied to £. ebenina, Waterh., which it resembles 
in size and form, but from which it may be distinguished at first sight by the 
dulness of its whole upper surface, the head and pronotum especially being 
closely and very distinctly punctulate, while the same parts in £. ehenina are 
very sparsely and minutely punctulate and the surface highly polished. In 
the latter species also the length of the pronotum is only about equal to, or 
scarcely appreciably greater than its width across the base, and is, therefore, 
relatively a trifle shorter than in opacicollis. Husyntelia balfouri, Waterh., differs 
from both of these species by its shorter antennz and its broader pronotum, 
the width of the latter across the base being distinctly greater than its median 
length ; in the figure of this species (Proc. Zool. Soc. 1881, pl. 43, fig. 5) the 
form of the pronotum is inaccurate and more nearly represents the shape 
occurring in ebenina and opacicollis. 
(8) Adelostoma granti. 
Oblongo-ellipticum, depressum, nigrum; capite antice arcuatim emarginato 
supra tuberculis quatuor parvis cariniformibus instructo ; prothorace paullo 
ante basin valde abrupteque angustato, supra carinis duabus longitudinalibus 
instructo ; utroque elytro carinis tribus instructo, carina interiore ad medium 
lateinterrupta, carina intermedia postice abbreviata. Long. 6, lat. 23 mm. 
Halitat, Abd-el-Kuri. 
Helopine. 
Deretus, gen. nov. 
This genus seems to be most nearly allied to Hubaus, Boield., from which 
it differs chiefly in the shape of the pronotum. The pronotum is narrowed at 
the base, and at the lateral margin on each side between the base and the 
middle there is a short blunt tooth, behind which the margin is rather deeply 
sinuate, while between it and the middle there is a feebler sinuation. The 
clypeus is broadly rounded in front, not truncate nor emarginate as in 
Eubeus ; the antennie are a little shorter and more slender than in the latter 
genus, and the proximal joints of the hind tarsi somewhat shorter. In other 
points of structure the agreement between the two genera is fairly complete. 
(9) Deretus denticollis. 
Piceo-niger, nitidus. Capite prothoraceque crebre sat fortiter punctatis, 
hoe transverso, ad basin angustato, utrinque inter medium basimque 
bisinuato, et inter sinus uni-dentato; elytris sat valde punctato-striatis, 
interstitiis leviter convexis, sparse punctulatis. 
Habitat. Sokotra : Jena-agahan (alt. 1200 ft.). 
Scarabzide. 
(10) Cheironitis socotranus. 
C. scubroso (Fab.) sub-similis, supra fusco-testaceus, capite viridi-suffuso, 
