ANG-TJILLULIM3 FEOM TEOPICAL OECHIDS. 77 



since two of the three observed species are new to science, 

 and because the third is very likely identical with a 

 species that inhabits the Fiji Islands. 



Mr. E. Newstead, Curator of the Grosvenor Museum 

 of Natural History, at Chester, however, wrote the 

 following to Mr. Eitzema Bos : — 



" There is absolutely no means of tracing the original 

 habitat of the Calanthes, for they have been in the col- 

 lection at Eaton for a number of years. Originally, some 

 years ago, there were comparatively few plants, but the 

 orchid grower, Mr. C. E. Hann, has annually increased 

 the stock by the propagation of the pseudo-bulbs, until 

 last year, when the collection consisted of about 1,000 

 plants, of which there is not a single healthy specimen 

 left. The soil, or 'potting material,' used in the cultiva- 

 tion of the plants, consisted chiefly of turfy-loam, with a 

 little well-rotted cow dung. When the plants were in 

 active growth, they were supplied with both artificial and 

 ordinary liquid manure ; the latter was obtained from the 

 immediate neighbourhood, as also was the soil." 



We ought, therefore, to conclude, as well from these 

 words as from the fact that Gal. Veitchii, to which most 

 of the diseased pseudo-bulbs belong, is a hybrid form, 

 cultivated in the nursery of Veitch, at Chelsea, London, 

 that my first supposition of the importation of these 

 worms out of the tropics is highly improbable. 



1. — Aphelenchus tenuicaudatus, n. sp. — Fig. 1. 



Male 0*8 mm., female 0'95 mm. ; a = 35 — 36 ; /? in the 

 male 8J — 9, in the female 9 — 9|-; y* in the male 11 — 15, 

 in the female 7f — 8|, rarely 10. 



* a indicates the proportion between the body-length and the average 

 diameter of the body; /3 the proportion between the body-length and 

 the length of the oesophagus, the pharynx included ; y finally the proportion 

 between the body-length and the length of the tail. 



