Gatty Marine Laboratory^ St. Andrews. 379 



Tlie widely distributed genus Travisia of Dr. Johnston, 

 wliicli ranges from Greenland to Kerguelen, is usually asso- 

 ciated with the Opheiiidae, and for the present no objection is 

 necessary. The common form, Travisia forbesii, occurs in 

 great stretches of sand and sandy mud both on the east and 

 the west coasts, from Shetland to St. Andrews, and ranges to 

 Greenland and other northern waters. In five examples 

 from Greenland the anterior runs into the posterior region 

 without marked distinction, except the gradual disappearance 

 of rings on the segments. Moreover, the total number of 

 segments seems to be smaller than stated by Dr. Johnston, 

 viz. from twenty- five to twenty-eiglit. In life the British 

 form has a uniform pinkish colour, paler or straw-coloured 

 laterally and posteriorly, and somewhat iridescent both 

 dorsally and ventrally. A coil of intestine which protruded 

 through a rupture was gamboge-yellow. The branchial cirrus 

 has a streak of red. This form is the Ammotrypane oestroides 

 of H. Rathke and the Ophelia mammillaia of QCrsted, both 

 of these describing it a little later than Johnston. 



The arrangement of the family Scalibregmidaj has recently 

 been carefully attended to by Dr. Ashworth *, the two main 

 groups being: (1) Those in which the bead has antero-lateral 

 tentacles, body enlarged anteriorly, feet (after the fifteenth) 

 prominent, with a laminate dorsal and a ventral cirrus ; gills 

 on the anterior segments {ScaJihregma) or none [Pseudo- 

 seal ibr eg ma). In a subsection (B) the simple rounded feet 

 do not form laminate appendages, and the ventral cirri, if 

 present, are confined to tiie posterior region. Strong curved 

 bristles on the first bristled segment {Sclerocheilus and Asclero- 

 cheilus) . (2) The head has a median groove ; no tentacles ; 

 body maggot-like, feet represented by dorsal and ventral 

 papillcC. No anal cirri. Gills on the anterior segments 

 present or absent (Eumenia and Lipohranchus). Baron de 

 St. Joseph t had formerly grouped them into those with and 

 those without branchiw. 



Nowhere does Scalihregma tnjlatum, H. Rathke, an 

 example of the first group, flourish so well or attain so large 

 a size as in the Outer Hebrides, where it was known more 

 than forty years ago ; yet its range is wide, for it is found on 

 the east as well as the west coast, and extends to Norway, 

 Spitzbergen, and Greenland. The peculiar tessellated appear- 



* Quart. Jouru Mior. Sc. n. s. xlv. (1904). 

 t Ann. !>c. Nat. S' m r. t. wii. ji. 103. 



