66 [March, 



the sandy soil is not entirely bare, by a short growth consisting chiefly 

 of Oniifhojms jyerpiisillns, Aira prcccox, with a few plants of Erodium 

 cicutnrium and Erica ; later in the summer Bumex acctoselln, Filofjo 

 minima, and TvifoUum arvense become evident, with Reseda Jiitea, 

 sparingly, though there is no chalk stratum. The most abundant 

 insects, though many are common, were Metahletus fuveola, Conostethus 

 roseus, and Flar/iognathus saltitans. 



In all ninety-two species of Coleoptera have been found within 

 this circumscribed space, of which a few are common coast species, 

 c.r/., Broscus cepliaJotes, CuJalhus fnscns and C. flavipes, Amura J'uha, 

 rarely, and A. considaris, Cocciiiella W-punclata, Notoxus monoceros, 

 RhiJoprdon r/eminrttiis, Sifonrs f/riseus, and others that are seen in all 

 sand districts.* 



Among the rarer kinds that have occurred to me beneath these 

 stones arc Harpalus discoideus, H. consentanciis, Amnra continua, A. 

 lunicollis and A. hifrons^ Platyderus rvJicoUis, Philonthus succicola, in 

 carrion, Medon casfaneits (about the fourth British example), Hister 

 12-strintus, Olihrus pyguKBus, Pityophagusferrurjineus, in logs, Byrrhus 

 dorsalis, Limonius cyJiudricus, Apioii loti, Gronops lunatus, and Mecinus 

 circulatus. The pupae of Goccinella 1-punclata, W-punctata and 22- 

 p>unctata are often abundant, conspicuously attached to the upper 

 sui-face of the hot stones in the full glare of the sunshine towards the 

 end of June. 



Comparatively few Hemiptera have a])peared, e.g., JVysius thymi, 

 Pci'ifrechus qeniculatus, Triphhps nigra, Bhyparochromiis cltiragra, and 

 R. dilatatus, PJni/iorjnathus pnlicarius, Acocephalus liistrionicus, and, 

 of course, Sfiroma jjteri'/is. Of Dipfera, Thereva nobiUtata, Conops 

 Jlavipes have been noted, and Pulex leporis was one day common at 

 the mouth of a rabbits' hole. Apterous Hymenoptera: Agrothereutes 

 ahhreviator and Pezomachus pumilus, Mutilla rnfipes, Myrmica scabri- 

 nodis, and Myrmosa melanocephala occur sparingly, with Saliiis parvultts 

 and Anthophora pilipes, but I do uot think these Fossors and parasites 

 would attack so well mailed and concealed a Coleopteron, and it is not 

 until we more fully comprehend the effects of geologic and atmospheric 

 influences upon the propagation of species and their strange migra- 

 tions that we shall explain the rise and fall of Harpalus Frdlichii in 

 Britain. 



Ipswich : January, 1901. 



* I may perhaps be allowed to here mention that the stridulating files of Gcotrupes ii/pltwus, 

 which occurs sparingly on the Plateau, are situated on the elytra, and that the sound i.s pro- 

 duced by friction of the abdomen upon these organs, as is the case in Cojiria and Ligyrus {c/., 

 Gahan, Trans. Ent. Unc, 'lOOU, p. 448). The .striated cosie riiay, however, also resonate (/. c. 

 446), since 1 did not test this. 



