Gatty Marine Laboratory^ St. Andrews. 



4. On the Goniadidse, Glyceridse, aiid Ariciidse procured by 

 Dr. Whiteaves in the Gulf of St. Lawrence in 1872 and 

 1873. 



Goniada maculata, CErsted. 



In the Canadian examples the V-shaped denticles at the 

 sides of the proboscis ranged from eight upwards. The larger 

 jaws guarded the lateral regions of the organ, their tips 

 pointing dorsally, three bifid denticles occurring veutrally 

 and two V-shaped ones dorsally. When the basal region is 

 fully extended the papillae form a frill at the tip, the teeth 

 of the larger jaws point inwards and backwards, those of the 

 bifid denticles and the tips of the V-shaped forms having a 

 similar direction. Three small separate denticles appeared 

 outside this circle dorsally. The opening of the proboscis 

 in this condition is oblique, pointing upwards and backwards. 



Goniada norvegica, (Ersted. 



Dredged at A, no. 4, 1872, in 150 fathoms, between 

 Griffin's Cove and Cape Rosier, Gulf of St. Lawrence. 



The head is proportionally massive and appears to consist 

 of eight rings in front of the large basal (peristomial) 

 segment. The terminal region has four short cirri, the distal 

 being shorter than the terminal pair. A lateral line or 

 groove on each side dorsally and ventrally cuts off" a lateral 

 fillet. The peristomial segment has a slight imprint of the 

 lateral grooves in front dorsally, while ventrally it is split by 

 a wide longitudinal fissure with a flap at each side, forming 

 tlie lips. No trace of eyes exists in the preparation. The 

 body is about 8 inches in length, though incomplete, and at 

 its widest part is fully 10 mm. across the feet and bristles. 

 It is slightly rounded dorsally, flattened ventrally, with a 

 shallow but broad median groove along the latter. The first 

 segment is connected by a broad median neck with the 

 peristomial, and from this point backward the segments 

 dorsally have a distinct pattern, viz. a broad prominent 

 fillet at each side continuous with a narrower median region, 

 iand a narrow fusiform central region clasped by the 

 former in frc::' ^nd behind. By-and-uy, proceeding back- 

 ward this pattern ...3ome less marked, the lateral fillets 

 being broader, whilst the median lozinge now ex^cuU to the 

 fillet 0x1 each side, making, with the foimer connectm„ - brir' ge, 

 two belts between the fillets in each segment. The pro- 

 iec+ing fillets pUo t;},nw furrows (longitudinal). About the 



4* 



