45-1 MB. E. I. POCOCK ON THE 



Plate XXXV. 

 (Figs. 1 to 6 are from Canon Norman's type specimens.) 

 Fig. 1. Ascidia producta, Hnk., natural size, from right side. 



2. The same species with the test removed, from left side, showing 



alimentary and reproductive organs, and renal vesicles scattered over 

 the stomach. 



3. The same, from the right side, showing the very faint muscles. 



4. Tentacles and dorsal tubercle of same species. 



6. Dorsal tubercle of another specimen of same species. 



6. Part of branchial sac of same. 



7. Tentacles and dors*il tubercle, &c., of a specimen of AsHdia produda 



from Tarbert, Loch Fyne (W. A. H.). 



8. Mass of Folycarpa glovierata, from Port Erin. 



9. Dorsal tubercle, &c., of P. glomerata. 

 10. Atrial tentacles of P. glovierata. 



Figs. 11, 12, 13. Graphic branchial formulae of 3 individuals of P. glomerata, 

 showing the condition of the branchial folds, &c. 



Plate XXXVI. 

 Fig. 1. Viscera of Styela rustica. 

 Fig. 2. Viscera of Styela monoceros. 

 Figs. 3, 4, 5, 6, & 7 show different specimens of Forbesella fessellata, and give 



some idea of the range in variation of shape ; natural size. 

 Fig. 8. Part of the branchial sac of Forbesella tessellata. 



9. Tentacles, dorsal tubercle, and languets of Forbesella tessellata. 



10. Interior of atrial siphon of same species, showing partial diaphragm. 



11. Part of branchial sac of Polycarpa quadrangularis, Forbes. 



12. Dorsal tubercle of P. quadrangularis. 



Contributions to our Knowledge of tlie i^rtliropod Pauna of the 

 "West Indies. — Part II. Chilopoda. By R. I. Pocock, of tlie 

 Natural History Museum. (Communicated by W. Peect 

 Sladen, Sec. Linn. Soc.) 



[Eead 16th March, 1893.] 



A GLANCE at tbe following list of the species o£ Chilopoda or 

 Centipedes here enumerated as West Indian will show that the 

 members of this group are neither numerous nor unknown. 

 Only 5 species have been described as new, and 4 of tbese — 

 namely, the two species of Geophilidae, the Cryptops, and the 

 Newportia — are of such, small size, that they are not likely to 

 come to hand again without special search. It is consequently 

 probable that we shall have to wait many years before we dis- 

 cover whether or not they are peculiar to the Lesser Antilles. 



