28 Rey. T. A. Marshall’s Monograph of 
subtruncate. Wings hyaline ; squamule black; nervures and 
stigma fuscous ; radial areolet lanceolate, very narrow ; Ist cubital 
areolet hexagonal ; prebrachial areolet of the hind wings rather 
short. Legs robust, blackish, with the extremities of the trochan- 
ters rufous. Abdomen as broad as the thorax, and somewhat 
longer, lanceolate, depressed ; 1st segment obconic, rather longer 
than its apical width, without visible tubercles, obsoletely rugu- 
lose, margined, often marked with a medial impression ; 2nd and 
3rd, taken together, subrectangular, one-half longer than the Ist ; 
the rest, taken together, scarcely half as long as the 2nd and 3rd. 
Terebra hardly exserted. ¢ similar; antennze almost one-half 
longer than the head and thorax, 22-jointed ; abdomen scarcely 
narrower than the thorax ; segments 2—3 as long as all the follow- 
ing united. Length, 1 lines ; exp., 2} lines. 
It has been taken in England, Ireland, and Holland, but 
rarely ; it crawls slowly amongst seaweed at the mouths 
of rivers, and on the coast. Mr. Billups has captured it at 
Oxshott. 
Chorebus limoniadum, Marsh. 
C. limoniadum, Marsh., lib. cit., p. 507, 2. 
@ Black; head transverse, as wide as the thorax, shining 
pubescent ; vertex faintly canaliculate ; mandibles and palpi testa- 
ceous. Antenne mutilated, but 16 joints remain. Mesothorax as 
in the last species; metathorax punctate-rugose, traversed by several 
raised lines, irregular, longitudinal, of which the two medial enclose 
an oval space. Wings hyaline ; squamule, nervures, and stigma, 
rufopiceous ; radial areolet lanceolate, broader than in C. nereidum ; 
recurrent nervure rejected to one-third of the length of the inner 
lower side of the 1st cubital areolet, which is thus made hexagonal; 
prebrachial areolet of the hind wings shorter than in C. nereidum. 
Legs testaceous, pubescent ; 4 anterior cox, all the femora, tibix, 
and tarsi infuscated at the apex; hind coxe black. Abdomen 
elongate-oval, depressed, subpetiolate ; 1st segment striolate, nearly 
linear, much narrower than the metathorax, margined from the 
base to the tubercles, which are acute and very salient ; the rest of 
the segments smooth. ‘Terebra hardly exserted. 4 unknown. 
Length, 14 lines ; exp., 23 lines. 
The shape of the stigma will at once distinguish this 
species, without regard to smaller differences. I cap- 
tured the only specimen known on the banks of a rivulet 
in Devonshire, at some distance from the sea. 
