302 CLAVICOUNIA. [rsnmmocclius. 



I am not aware if it occurs in England, but immature specimens of P. 

 bipunctatus seem to come near it. 



HYPOCOPRINA. 



The position of this tribe has always been a source of great discus- 

 sion, ever since the genus JIijpocojvus was first discovered ; the majority 

 of authors have referred it to the CryptophagidcB, to which it certainly 

 is soaiewhat closely related ; Thomson (Skand. Col. x. 353) regards it 

 as intermediate between Monotoma and Mi/rmecoxenus ; Dr. Horn 

 (Classification of the Coleoptera of North America, p. 140) places it as 

 a tribe of the Mycetophagidoe ; on the whole, however, the position 

 assigned to it by Keitter betAveen the Psammaichina and Silvanina, 

 appears to be the most natural, and I have, therefore, although with 

 some reserve, adopted it. 



HYPOCOPRUS, Motschulsky. 



This genus comprises two or three species from Europe and Madeira ; 

 our single species is very rare, and has not been found for many years. 



H, latridioides, ]\Iots. Elongate and linear, upper surface rather 

 depressed, slightly shining, with very fine and scarcely visible pubes- 

 cence, pitchy-black with the antennae and legs ferruginous ; head rather 

 large, subtriangular ; antennae rather long, inserted at some distance 

 before eyes, ll-jointed, with the last three joints thicker, forming a 

 club ; thorax longer than broad, subquadrate, with the sides not crenu- 

 late ; elytra obsoletely punctured, without striae, broadly rounded at 

 apex ; anterior coxae not widely separated, all the tarsi 5-jointed. L. 

 l-l^ mm. 



Very rare ; under cow-dung in a sandy field at Brandon, Suifollc ; taken sparingly 

 by Mr. Crotch ; it appears to be very scarce on the Continent. Thomson compares 

 this puzzling species to Monotoma lovgicollis, to which insect it bears a superficial 

 resemblance ; Rye says that it may be superficially described as a black specimen of 

 Lissodema ^-guttata, of the size of Lathridius ruficoUis. 



SILVANINA. 



Six genera belonging to this tribe are found in Europe, three of Avhich 

 are represented in Britain ; several of the species are cosmopolitan ; the 

 anterior coxal cavities are broadly closed behind, and the tarsi are 5- 

 jointed in both sexes, and have the fourth joint very small. 



I. Club of antennaj 4-jointed 'Navsibws, Ecdt. 



II. Club of antennae 3-jointed. 



i. Joints of club of antenna; of equal breadth SlLTANXTS, Latr. 



ii. Central joint of club of antennte broader than the other 



t„,o Catharttts, lieiche. 



