64 MANDIBULATA. COLEOPTERA. 



Genus LXXXIII. — Laccophilus, Leach. 



Palpi, external maxillary with the first and third joints shortest, the fourth 

 elongate, subulated : labial with the terminal joint longer than the others, rather 

 curved, acuminated: lahrum minute, emarginate: mandibles acute, dentate 

 towards the apex: mentum bilobate. Antenna simple: head broad, gibbous: 

 thorax triangularly produced in the centre behind, in place of the scutellum : 

 elytra oval, slightly acuminate, a little convex : posterior legs formed for swim- 

 ming : all the tarsi five-jointed. 



Laccophilus bears considerable resemblance in form to Colym- 

 betes, but the absence of a scutellum at once distinguishes it from 

 that genus and the following, as do the simple antennse from 

 Noterus, the five-jointed anterior tarsi from Hydroporus, Hygrotus, 

 and Hyphidrus, and the natatorial posterior feet and depressed body 

 from Pselobius and Haliprus. 



Sp. 1. minutus. Flavo-ferrugineus, elytris fuscis, basi lateribusque pallidis, 



thoracejlavo immaculato. (Long. corp. 2 lin.) 

 Dy. minutus. Linne? — Mart. C. pi. 33. f. 13. Lac. minutus. — Steph. Catal. 



p. 48. No. 477. 



Rusty-yellow ; very glossy : head very smooth, pale-yellowish or greenish ; eyes 

 black : thorax moderately convex, very smooth, yellowish-green immaculate : 

 elytra slightly convex anteriorly, depressed posteriorly, obtuse, smooth, glossy 

 greenish-yellow, with the margin and several irregular spots, one in the middle 

 of the base, another towards the suture, emarginate on either side, an oblique 

 one on the shoulder, and another in the middle, both connected with the mar- 

 gin ; an oblong narrow streak toward the middle, and another at the apex : 

 body testaceous-yellow beneath : legs yellowish ; hinder tarsi obscure. 



The number and size of the maculations vary considerably ; they are sometimes 

 nearly obsolete. 



Taken occasionally in ponds and ditches round London: in 

 Norfolk. " Near Carlisle." — Dr. Leach. " Wandsworth-common, 

 Copenhagen-fields, and Regent's Canal." — Mr. Ingpen. " In 

 Mildenhall-drain, near Littleport, Cambridgeshire." — Rev. L. 

 Jenyns. 



Sp. 2. interruptus. Ovalis,fuscus, capite thoraceque J! avis, elytris virescentibus 



pellucidis. (Long. corp. 2 lin.) 

 Dy. interruptus. Panzer. — Lac. interruptus. — Steph. Catal. p. 48. No. 478. 



Oval, fuscous, very smooth and shining : head and thorax yellow-immaculate : 

 eyes black : elytra greenish, pellucid, rather attenuated towards the apex, the 

 surface beneath a lens finely but faintly and thickly punctulate, marked as. 

 in the preceding insect : body testaceous beneath ; legs pitchy-ferruginous. 



