ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 163 



Ganges and Mahanaddi rivers, in eastern India. Along with Scutariella 

 diilactyla, from Montenegro, this new form must be referred to a new 

 family, Scutariellida?, marked off from other Temnocephala by the fol- 

 lowing characters. There are only two anterior tentacles ; the anterior 

 margin of the posterior sucker is cleft ; the alimentary canal extends to 

 the posterior extremity and has the genital organs on its ventral surface ; 

 there are no pulsatile excretory pouches. 



The genus Garidinicola is distinguished from Scutariella by having 

 a pair of small anterior suckers, by the terminal position of the mouth, 

 and by the peculiar shape of the posterior sucker. It captures its prey 

 by means of a protrusible pharynx or oesophagus ; its tentacles are sense- 

 organs, used in testing the surface and in finding the host. The eyes 

 are probably used in finding the prey — minute Protozoa and Protophyta. 

 Progression is effected by " looping." 



Incertae Sedis. 



New Phoronids.* — H. L. M. Pixell gives an account of the structure 

 of a new species of FJioronis and a new species of Fhoronopsis, both from 

 Vancouver Island. The characteristics of Fhoronis Vancouver ens is sp. n., 

 which distinguish it from P. hippocrepis and its varieties, are the follow- 

 ing : — the character and greater development of the fascicles of longi- 

 tudinal muscles ; the presence of two nerve-cords in the anterior region 

 of the body : the structure of the diaphragm ; the well-developed band 

 of specialized cells in the pregastric region ; and the possible separation 

 of the sexes (dioecious), or, if monoecious, protandrous. 



The other new form, Fhoronopsis harmeri sp. n., shows a nerve-ring 

 lying in an involution of the epidermis, and only the left nerve-cord 

 developed. The longitudinal muscles of the body are in numerous weU- 

 developed fascicles. It is quite distinct from F. albomaculata^ described 

 by Gilchrist from South Africa. 



Crustaceous Bryozoa.| — -G. M. R. Levinsen describes numerous fossil 

 species of the genus Meliceritites, which represents a family of Cyclosto- 

 matous Bryozoa. That the Melicerititida? are Cyclostomata is shown by 

 the form and development of the zooecia, these being long slender tubes, 

 each of which arises from the proximal part of another zooecium. The 

 presence of numerous fine pores, the rhombic or hexagonal zooecial areas, 

 the ooecial expansions of the gonozooecia, and other features, point to 

 Cyclostomata. Levinsen divides the order into operculate and in- 

 operculate sub-orders, and the Melicerititidas belong to the former. The 

 sub-terminal aperture, which has a straight or almost straight proximal 

 margin, is provided with a convex calcareous operculum, showing more 

 or less distinct radiating striae. 



Echinoderma. 



Hybrid Larvae of Echinocardium cordatum and Echinus escu- 

 lentus.1: — E. AV. MacBride describes the larvae produced by fertilizing 



* Quart. Journ. Micr. Sci., Iviii. (1912) pp. 257-84 (16 figs.). 



+ Mem. Acad. R. Sci. et Lett. Danemark, x. (1912) pp. 1^52 (7 pis. and 2 figs.). 



: Quart. Journ. Micr. Sci., Iviii. (1912) pp. 299-324 (2 pis.). 



