Xofes from the Gatty Marine Lahoratonj. 11 



Marava victorice, sp. n. 



M. hackeri vicina ; differt pygidio S margine postico in lobuiu 

 triangularem producto. 



6. ?. 



Long, corporis 6-6-5 mm. 7-7-5 mm. 



„ forcipis 2-2-5 „ 1 „ 



In colour closely resembles M. hackeri, but tints a little 

 deeper and markings less detiiied ; agrees in every respect 

 except the pyi;idium ^ , which is produced into a depressed, 

 rather obtuse, triangular lobe, with a point at each side and 

 one at the apex. 



Victoria : Fern Trea Gully, 6 (5^ c? , 4 ? ? {Spry, c. m.). 



This species very closely resembles M. hackeri^ but the 

 pygidium is quite different ; the lateral points are often 

 scarcely discernible, the apical point being the most prominent 

 and often the only one noticeable. 



EXPLAXATIUX OF PLATE IV. 



Fit/. 1. Dlcrcma hackeri, s^. \\. c?) X 2^. 



Fig. 2. Pyge shortridgei, sp. n. cf , X 2|. 



Fig. 3. Parisopsa/is sprgi, sp. n. d , X '■^k- 



Fig.Sa. Ditto. Profile of abdomen. J. 



Fig. 4. Uittn. ( I eiiital armature, c? . 



Fig. 6. Marava doddi, sp. n. (j", X 4. 



Fig. 0. Ditto. Forceps and pygidium. J, X 8. 



Fig. 7. Marava hackeri, sp. n. J , X 5. 



Fig. 8. Ditto. Forceps and pygidium. d , X 8. 



Fig. 9. Ditto. Genital armature. 



Fig. 10. Marava victoria, sp. u. d , X 5. 



Fig. 11. Ditto. F'orceps and pygidium. X 10. 



XI. — Notes from the Gatti/ Marine Latioratory , St. An- 

 drews.— ^o. XXXVI. 13v Prof. M'Intosh, M.D., LL.D., 

 F.R.S., &c. 



[Plates V. & VI.] 



1. On tlie Ventral Furrows of the Lesser Rorqual {Balanoptera rustrata, 



O. Fabriciusj. 



2. Oa some of tlie Species of Prionospio, Malmgreu. 

 .'3. On tlie British Amphictenidce. 



4. On the British Ampharetidcc. 



I. On the Ventral Furrows of the Lesser Rorqual 

 (Bahenoptera rostrata, O. Fabricius). 



I.\ the numerous accounts of the structure of this species, 

 from J. Hunter and R. Knox to Sir William Turner, the 



