ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 551 



seventh sternites. The opening is median, and from it the gland 

 extends upwards and forwards as two distinct lobes. In the male it 

 measures about 2 mm. in length, in the female it is very much less. 

 Some account of its histology is given. 



Insects Attacking Cocoanut Palm.*— Charles S. Banks adds to his 

 previous account of the Coleoptera attacking the cocoanut palm a descrip- 

 tion of certain species of Lepidoptera and Coccida? which are also injurious, 

 e.g. the cocoanut skipper, Padraona chrysozona Plotz (Hesperiidge), 

 Thosca cinerea marginata Banks (Limacodidse), and the transparent 

 scale, Aspidiotus destructor Sign. 



Hive-Bees Nesting in the Open Air.f — E. L. Bouvier reports the 

 rare occurrence (two cases) of hive-bees nesting in the open air on a tree. 

 He describes the number and form of the combs, and the fixing and pro- 

 tecting of the large edifice. No drone cells were seen in either case, and 

 there was no evidence of queens being reared. Most of the workers 

 died off in winter, and the last survivors died in early spring. Bouvier 

 calls particular attention to the collective industry which was manifested 

 — very effectively too — in entirely unwonted conditions. 



Monograph of Coniopterygidse4 — Griinther Enderlein gives a mono- 

 graphic account of this family, which has a cosmopolitan distribution. 

 They are typical Megaloptera (Neuroptera), closely related to the 

 Henierobiidas. The mealy dust on the wings and body is very charac- 

 teristic ; the only analogy is in the Aleurodidae (Rhynchota). It seems 

 likely that the dust is a secretion which hardens in the imaginal stage, 

 and may have the same function as scales. The larvae feed to a large 

 extent on plant-lice. They spin a larval web on tree stems, which closely 

 resembles a flat spider's cocoon. A systematic account of the nine 

 genera and numerous species is given. 



5. Arachnida. 



Development of Thelyphonus Caudatus.§ — W. Schimkewitsch 

 describes the segmentation, the origin and formation of the germ-layers, 

 and development of organs up to the time of hatching. An account of 

 the structure of the young Thelyphonus is given, and some considera- 

 tions bearing on the phylogenetic relations of the Arachnids are also 

 added. 



The Genus Gamasus and other Acari.|| — A. Berlese supplies a 

 monograph upon the genus Gamasus, in which most of the species 

 described have been found in Italy. Included in the memoir is a con- 

 spectus of nymphs, admittedly incomplete and provisional, but likely to 

 be of service. In two earlier papers IT the same author describes a number 

 of new Acari, one collection from Java, and another European. 



* Philippine Journ. Sci., i. (1906) pp. 211-28 (10 pis.). 

 t Comptes Rendus, cxlii. (1906) pp. 1015-20. 

 J Zool. Jahrb., xxiii. (1906) pp. 173-242 (6 pis. and 3 figs.). 

 § Zeitschr. Wiss. Zool., lxxxi. (1906) heft 1, p. 1-95 (8 pis. and 11 figs ) 

 U Redia, iii. (1905) fasc. 1, pp. 66-304 (18 pis.). 

 T Op. cit., ii. (1904) fasc. 2, pp. 154-76 (3 pis.), and pp. 231-8. 



