ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 507 



appendages found by Gerstiicker in Corydia, and tlic structures of similar 

 function found in larvte, and lately described by Klcmensiewicz. Some 

 account is given of the peculiar organs found between the sixth and 

 seventh dorsal plates of Phijllodromia germanica. 



B. Myriopoda. 



Spinnerets of Myriopoda.* — M. J. Chalande found in Scolopendrella 

 tmmacukita an apparatus composed of two distinct glands, which open 

 outwards in the two apj)endages which are placed on the margin of the 

 anus. They have the form of elongated tubes which end blindly about 

 the fifth anal segment. Tlie anterior portion forms the gland proper 

 and the hinder part its excretory canal. The gland is occupied by a 

 single large cavity filled with the secreted substance ; its wall consists 

 of fine cells charged with fine granulations. The terminal appendages, 

 which are formed by a single lanceolate joint ending in ahmg and strong 

 spine, are traversed by a cavity at the end of which is an aperture. The 

 secieted liquid is remarkable for its great viscosity, and does not mix 

 either with water or glycerin ; on coming into contact with air it 

 hardens rapidly. The threads thus formed differ from those of Spiders 

 in being not elastic but fragile, like a thread of glass. 



Myriopoda of Mergui Archipelago-t — Mr. E. I. Pocock has an 

 account of the Myriopods collected by Dr. Anderson ; they are, appa- 

 rently, the first recorded from these islands, and they are, in many 

 cases, referable to species which have been described from the Oriental 

 region. Those that are new are, with one exception, small and incon- 

 spicuous individuals, which would in all probability have been overlooked 

 or ignored by any but a scientific collector. Of the Chilopoda only one 

 — a species of Himantarium — is new; of the Diplopoda, Glomeris has 

 one, Paradesmus two, Spirostreptus two, and Spirobolus one new species. 

 During the printing of his pajjer the author was enabled to examine 

 two large collections of Burmese Myriopods, and he has now found that 

 the Myriopod fauna of Mergui has certainly been derived from that of 

 South Burmah. He has therefore described the new Glomeris from 

 Mergui not as a new species, but as a variety of a new Glomeris — G. 

 carnifex—ivom Tenasserim, arguing that the continental form is the 

 parent of that found in the island. 



y. Prototracheata. 



Maturation of Ovum in Cape and New Zealand Species of 

 Peripatus. % — Miss L. Sheldon has had Ihe opportunity of studying the 

 maturation of the ovum in three species of Peripatus. In P. capensis 

 and P. Balfouri the ova arise by a growth of some of the nuclei of the 

 germinal epithelium ; apparently any of the nuclei may give rise to ova. 

 Each ovum has a large round central nucleus, and is surrounded by a 

 layer of protoplasm, which is not separated from that of the germinal 

 epithelium. As the ova increase in size they become surrounded by a 

 thin shell. As the nucleus passes to the periphery it is homogeneous, 

 and has only slight traces of a reticulum. Alter the disappearance of 

 the germinal spot the wall of the germinal vesicle becomes irregular in 



* Comptes Rendus, cviii. (1889) pp. 106-8. 



t Journ. Linn. Soc. Loud., xxi. (1889) pp. 287-303 (not 330 as printed) (2 pis) 



X Quart. Jouru. Micr. Sci., xxx. (1889) pp. 1-29 (3 pis.). 



