1897.] ON THE PLANKTON OF THE FAEROE CHANNEL. 803 



H^AMBATES JOHNSTONI, sp. n. (Plate XLYI. fig. 4.) 



Vomerine teeth in two small groups between the choanse. Head 

 much broader than long ; snout rounded, as long as the diameter 

 of the eye ; ihterorbital space as broad as the upper eyelid ; tym- 

 panum two tmKls the diameter of the eye. Fingers with a 

 slight rudiment dfx web ; toes half-webbed ; disks well deve- 

 loped ; inner metatarsal tubercle large, compressed, crescentic, 

 very prominent. The tibio-tarsal articulation reaches the eye. 

 Skin smooth above, granulate on the throat, belly, and lower surface 

 of thighs. Purplish or brown above, with a more or less distinct- 

 dark triangular marking on the back, the apex reaching the 

 occiput; white dots usually scattered on the back; limbs with very 

 indistinct dark cross-bars ; a white streak borders the upper lip, 

 the outer side of the forearm and hand, the anal region, the heel, 

 and the outer side of the foot ; hinder side of thighs dark brown ; 

 lower parts white. 



From snout to vent 42 millim. 



Closely allied to H. anchietce, Eocage, from Angola. 



Three specimens from Kondowe-Karonga, and one from the 

 Nyika Plateau. 



EXPLANATION OF PLATE XL VI. 



Fig. 1. Lygosoma johnstoni, Blgr. Side views of head and anterior portion of 

 body and pelvic region, and upper view of head (p. 801). 



2. Glypholyciis whytii, Blgr. Upper, lower, and side views of head (p. 802). 



3. Arthroleptis whytii, Blgr (p. 802). 



4. Hylambates johnstoni, Blgr (p. 803). 



9. Contributions to our Knowledge of the Plankton of the 

 Faeroe Channel. No. III. 1 The Later Development of 

 Arachnactis albida (M. Sars), with Notes on Arachn- 

 actis bournei (sp. n.). By G. HERBERT FOWLER, B.A., 

 Ph.D., Assistant Professor of Zoology, University 

 College, London. 



[Received June 15, 1897.] 



(Plate XLVLI.) 

 ARACHNACTIS ALBIDA (M. Sars). 



This beautiful floating Actiriian was originally described by 

 Michael Sars in 1846 (loc. cit. infra) ; it has since been taken 

 on several occasions, and has received quite a large amount of 

 attention. 



The recorded occurrences and the references to descriptions are 

 most simply put in tabular form. They all refer to surface 

 captures, often in company with shoals of Salpce. 



1 For Part I. see P. Z. S. 1896, p. 991 ; Part II. antea, p. 523, 



