36 TEREBKATULID7E. 



coasts. We refer to the second vol. p. 355, of the ' British 

 Mollusca ' for a description of this animal. 



T. CRANIUM, Miiller. 

 T. cranium, Brit. Moll. ii. p. 357, pi. 57. f. 11 ; and iv. p. 257- 



This species is said to have occurred in Zetland. The 

 animal has not heen observed. 



ARGIOPE, Deslongchamps. 



A. CISTELLULA, Searles Wood. 



A. cistellula, Brit. Moll. ii. p. 361, pi. 57. f. 9, and iv. p. 257- 



We have taken this species in the coralline zone, at Ex- 

 mouth, with the animal in the shell, but perfectly dry ; and 

 all that is known of it is, that it has spiral arms supported by 

 an apophysary process. 



The present shell is quite fresh ; it is of subquadrate form, 

 pale brown colour, much more compressed than the Shetland 

 specimens, and has the mesial groove more distinctly deve- 

 loped; still it is only a variety of the Megathyris cistellula, 

 which M. Philippi states to be subject to much variation of out- 

 line. Axis et diameter y 1 uncise. I have again recently taken 

 from the coral zone of the South Devon coast, at Exmouth, in 

 thirteen fathoms water, the M. cistellula, now Argiope cistel- 

 lula of the ' British Mollusca/ the Terebratula seminulum ? 

 Philippi, which I believe has not been found so far south in 

 the United Kingdom, except fide Turtoni, in Torbay ; I am 

 sure that Professor Forbes and Mr. Hanley will feel pleasure 

 in the corroboration of the correctness, in this instance, of 

 Dr. Turton' s habitat : see the note in the ' British Mollusca/ 

 vol. ii. p. 362. I have had on several occasions personal inter- 

 course with Dr. Turton, and became the original purchaser of 

 his collection of British shells, which, during my temporary 

 secession from malacological pursuits, passed out of my pos- 

 session ; Dr. Turton also did me the honour of the dedication 

 of his Manual of the Land and Freshwater Mollusca. Under 



