Anglo-Norman Islands. 297 



male and female are, I think, sufficient to give an idea of 

 them (figs. 4 and 7). 



yEpophilus Bonnairci occurs under stronglj adherent stones 

 situated at some depth among the gravels ; it seems to remain 

 there motionless, only to run with great rapidity as soon as 

 the block which covers it is raised. I have found it in St. 

 Clement's Bay, behind La Mothe, at points which are left 

 bare every tide ; it is associated with Ntesa hidentata, Gam- 

 marus viarinus, Phascolosoma elonqatum, TereheUa conchilega. 

 Cirratulus Lamarchii, Nereis cultrifera, &c. 



jEjyus Robinii^ Lab., also lives at the same station ; during 

 my first sojourn in Jersey I did not observe this beetle, but I 

 found some specimens of it in 1885. 



As to the larva of jEpopMlus^ it is a little smaller and 

 more flattened than the perfect insect (fig. 2). It differs from 

 the latter, in the first place, by the absence of genital organs 

 and of elytra, and further by some peculiarities in the form of 

 the rostrum and of the feet (figs. 5, 8, and 9). 



In 1884 the existence of Ochihebius Lejolisi, Leach, at the 

 Corbi^res, was indicated ; it lives, with its larva, in tlie pools 

 which are formed at low water near the bank. I looked for 

 this insect in 1885, and likewise met with it. 



There is notliing astonishing in seeing insects such as 

 JE^:»wsand jEjiophilus living in regions of the coast which are 

 uncovered at every tide. We know, in fact, that insects, even 

 aerial insects, are able to resist a submersion lasting for 

 several hours, or even one or two days, as appears from the 

 interesting experiments of Plateau. Under these conditions 

 the animal falls into a state of apparent death, but becomes re- 

 animated when brought again into the open air, providing the 

 duration of the submersion has not exceeded a certain limit. 



But a thing that greatly surprised me was to find specimens 

 of yEpophilas in the caves of Gouliot, in 8ark, in the cave of 

 the lubularians, that is to say in a place which is only un- 

 covered at the highest spring-tides. Now, if in the ordinary 

 tides of the syzygies the sea retires sufficiently to lay bare the 

 upper part of the caves, during the whole interval which 

 separates two successive spring-tides the cave is absolutely 

 full of water. We must therefore assume either that jEpo- 

 philus is able to live for several days together without being 

 obliged to renew the provision of air which it retains in its 

 tracheal system, or that it quits the caves to take shelter in a 

 spot which is more frequently uncovered, and only reenters 

 them at the time of the spring-tides ; this latter hypothesis is 

 hardly sustainable. 



Ann. & Mag. N. Hist. Ser. 5. Vol. xviii. 20 



