eM 
r 
a 
4 
1870. 33 
twice the bulk of that of the male ; widening in front of the eyes, neck very broad 
and thick: eyes not projecting beyond the lateral margin of the head. Labrum 
deeply sunk between the base of the mondibles, sinuate on its front edge. Man- 
dibles of great size and strength ; dilated at the base beneath, the lateral groove 
(which is transversely strigose) being thus thrown on the dorsal face; the inner 
edge dilated about the middle into a broad tooth, thence tapering to the apex, 
which is not very acute or falcate, the tips crossing. Inner maxillary palpi exca- 
vated within near the apex, as in Damaster and Coptolabrus. Mentum without 
tooth. Palpi securiform, terminal joint of the maxillary much shorter than the 
penultimate (rest wanting). Antenne slender, setaceous, reaching but little beyond 
the base of the elytra, basal joints not compressed. Thorax short, sub-quadrate, 
broader by one-third than long, narrowed behind, sides rounded ; lateral margins 
scarcely dilated. Elytra sculptured as in Damaster, but more coarsely ; elongate-oval, 
apex rounded. Legs similar to those of Carabus. Three joints of the anterior 
tarsi of the male dilated, flattened above, and furnished with a dense brush of 
short hairs beneath. 
CaTHAICUS SWINHOEI, 2. s. 
Niger, sub-opacus, capite thoraceque subtiliter dense punctatis ; elytris 
utringue tuberculis minutis sub-cequalibus in seriebus circa 15 ordinatis, 
interstitiis minutissime scabrosis, opacis. 
Black, with a slight bluish tinge, scarcely shining. Head minutely and thickly 
punctured, forehead with a large and deep central depression. Thorax, in the 9, 
much broader in front and less rounded on the sides than in the ¢; in 
the g, sub-quadrate, rather more narrowed behind than in front; sides in both 
sexes very narrowly margined; anterior angles closely applied to the sides 
of the neck, posterior angles slightly produced and obtuse, surface finely punctu- 
lated. Elytra elongate-oval, slightly depressed in the middle, much more convex 
posteriorly, and abruptly declivous towards the apex; surface of each with about 
fifteen rows of small, sub-quadrate shining elevations, the interstices rugose-opaque, 
varied with minute granules. Body beneath, and legs, shining. 
Length 14 to 15 lines. Hab.: Pekin. 
One pair (gf and ?) from the neighbourhood of Pekin; brought 
home by Mr. Consul Swinhoe, to whom all branches of zoology are so 
much indebted for his researches in China, and in the islands of 
Formosa and Hainan. 
London : June, 1870. 
"yi 
| DESCRIPTION OF A NEW SPECIES OF BYTHINUS FROM GREAT BRITAIN. 
| BY. B. ©) BYE. 
_ BYTHINUS GLABRATUS, sp. 2. 
Ni Rufo-testaceus, fere levigatus, pube longiore parcius vestitus ; anten- 
narum articulo basali eylindrico, elongato ; pedibus tenuibus, tibiis posticis 
: Ry . . . . . 
elongatis, apice intus paullo incurvatis. 
Maris (7) pedes paullo crassiores. Long. corp., via 3-lin. (Angice.). 
