A HISTORY OF CORNWALL 183. White Skate, Burton Skate, or Bordered Ray. Raia alba, Lac6p. Not uncommon in deep water. 184. Long-nosed Skate. Raia oxyrhynchus, Linn. Has been obtained (Couch). 185. Shagreen Ray. Raiafullonica, Linn. Rare in Cornwall (Couch). 1 86. Thornback Ray. Raia c/avata, Linn. Common. 187. Spotted Ray or Homelyn Ray. Raia maculata, Montagu. Common. 1 88. Blonde. Raia blanda. Holt & Cal- derwood. A species formerly confounded with R. maculata, Montagu. It is larger and more spiny than the latter : J. Couch's description of R. maculata, according to Holt, applies to both species, but was based on a specimen of the blonde. 189. Painted Ray. Raia microcellata,Mon- tagu. Common. T. Cornish states that this form, locally called ' the owl,' is plentiful off Pra Sands in Mount's Bay, and, according to Dunn, it is common at Mevagissey. cir- 190. Cuckoo Ray or Sandy Ray. Raia cularis, Couch. Occurs in deep water on sandy ground. 191. Sting Ray. Trygon pastinaca, Linn. Has been frequently taken. Couch refers to one from Whitsand Bay, Cornish recorded in the Zoologist one taken at Porthcurnow in 1870, and Day mentions one at Penzance and two at St. Ives in 1881. 192. Eagle Ray or Whip Ray. Mylwbath ayuila, Linn. Stated in the Cornish Fauna to have been taken once off Cornwall. Both this and the previous species are viviparous : the ' purse ' attributed to Myliobath by J. Couch belongs to a Rain. CYCLOSTOMES
193. Sea Lamprey. Petromyzan marinus. Linn. Common, according to the Cornish Fauna. Two have been recorded from St. Ives, and Mr. Dunn took one from the storrufch of a hake at Mevagissey.
- I94- Lampern or River Lamprey. P etro -
myzonfluviatilis, Linn. ^ Common in spring in the rivers of eastern Cornwall.
- I95- Planer's Lamprey or Mud Lamprey.
Petromyzon branchialis, Linn. Common. CEPHALOCHORDA 196. Lancelet. Branchiostoma lanceolatum, Pall. Occurs on sandy shores, but is not easily obtamed. Couch found his specimen buried in sand under a small flat stone in i8?i The specimen figured by Day was dredged with others at Mevagissey in 1883. 306
