Plants collected by Mr. Schomburgk in British Guiana. 105 



which towards the tail become much smaller, and thus give 

 it a kind of marbled appearance. The distance from the nasal 

 extremity to the centre of the eye is shorter than the greatest 

 height of the head, and than the distance from the centre of 

 the eye to the hinder portion of the gill covering. Between 

 head and anal aperture are 19 segments, and between this 

 aperture and caudal extremity about 50. 



The dorsal fin consists of 26 rays (in all specimens which I 

 have hitherto examined this has been constant) and extends 

 only over 7 segments. The anal aperture is situated in the 

 male at the anterior third part of the length of the body. 

 The eggs are arranged in four rows. 



I discovered this little recruit to our Fauna on the Bohusland 

 coast. Lately I found several specimens, all males, of Avhich 

 two had roes. This pipe-fish is probably not so rare, but all 

 the specimens I obtained were fished up from the bottom of 

 a water 16 fathoms deep, which appears to show that it inha- 

 bits deep water; a circumstance, which renders the catching of 

 this small fish so difficult, that it easily escapes. I have never 

 seen it caught on the shores. The female I am unacquainted 

 with. 



XIII. — Enumeration of thePlants collected iyMr.Schomburgk, 

 British Guiana. By George Bentham, Esq., F.L.S. 



Mr. Robert Schomburgk was in the year 1834 appointed by the 

 Royal Geographical Society to command an expedition into the in- 

 terior of British Guiana, with permission at the same time to make, 

 on his own account, collections in the various branches of natural 

 history, one set being deposited in the British Museum. Having 

 procured a certain number of subscribers to the dried plants which 

 he should collect, it was further arranged that Mr. Schomburgk 

 should make them up in sets and forward them to me for transmission 

 to the subscribers, and that each species should be marked with cor- 

 responding numbers in the several sets, with a view to identifying 

 them when published. 



Mr. Schomburgk, having received his final instructions, left 

 George Town, Demerara, on the 21st of September, 1835 ; ascended 

 the Essequibo, and its tributary, the Rupunoony, as far as the creek 

 Anna-y, where he established a temporary habitation or head-quar- 

 ters ; made several excursions from thence during a stay of about 



