620 SUMMARY OF CURRENT RESEARCHES RELATING TO 



villwmnis Kraatz. The labium forms in front of the pharynx a kind of 

 gutter (atrium) hidden under the labrum. On each side is a brush and 

 a comb with forty teeth. These " paralabial " parts are probably atomo- 



doeal differentiations, secondarily fused to the labium. The food, which 

 consists of decomposing animal matter, is pressed by the mandibles into 

 the space between labrum and atrium, and the combs act as a strainer, 

 letting fluid pass out. 



Revision of Bathysciinse.* — R. Jeannel has made a detailed study 

 of these cavernicolous Silphid beetles. He deals with their external 

 features, making a special point of distinguishing paleogenetic characters 

 from those that are adaptive to life in caves. The larval forms, the 

 geographical distribution, and the classification are carefully dealt with. 



Nutritive Habits of BostrychidiB.f — Pierre Lesne discusses the 

 diversity of diet in Bostrychidaa and its parallelism with that observed 

 in Scolytidse. There is no doubt that Bostrychid beetles are primarily 

 xylophagous (eating the hard woody tissue of Mimosa, Bambusa, Yine, 

 Ficus carica, etc.). But to this normal diet, to which they are mar- 

 vellously adapted, they have added two others : (1) as adults they have 

 taken to eating growing shoots of trees ; (2) sometimes as adults and 

 sometimes as larvae they have taken to exploiting the stores accumulated 

 by plants, either on the plants directly or when garnered by man. 



Position and Classification of Protodermaptera. J— Fr. Zacher dis- 

 cusses this sub-order of earwigs, phylogenetically older than the Euder- 

 maptera (Labiidaa, Cheliduridse, and ForficulidaB). Along with the 

 Protodermaptera may be included the Paradermaptera with the family 

 Apachyidse. The Protodermaptera include two sets of families, the 

 Pygidicraniales and the Labiduriales. The author deals with the 

 detailed classification and the geographical distribution. 



New Collembola in England. § — J. W. Shoebotham describes Onco- 

 podura crassicornis sp. n. from Hertfordshire, and records twelve species 

 new to England — all new to the British Isles except Sphyrotheca lubbocld 

 (Tullb.), which has been recorded by Bagnall (1909) from the Kyles 

 of Bute. 



Insect Remains from South Wales Coalfield. ||—H. Bolton deals 

 with a large series of Blattoid remains, including new species of Hemi- 

 mylacris, Arcliimylacris, etc. They occurred in marked association with 

 vegetable remains ; the deposits were apparently near to a land surface ; 

 the presence of Archimylacrid and Orthomylacrid forms, no less than the 

 presence of La?nproptilia, is indicative of a considerable advance in insect 

 development in Britain beyond the more primitive palaaodictyopteran 

 types. 



* Arch. Zool. Exper., vii. (1911) pp. 1-641 (24 pis.). 



t Comptes Rendus, clii. (1911) pp. 625-8. 



J Zool. Jahrb., xxx. (1911) pp. 303-400 (80 figs.). 



§ Ann. Nat. Hist., viii. (1911) pp. 32-9 (1 pi.). 



|| Quart. Journ. Geol. Soc, lxvii. (1911) pp. 149-74 (4 pis.). 



