290 CATALOGUE OF THE MALACOSTRACA 



Pen. sulcatus of Olivier according to Cuvier, 'Regne Animal,' iv. 92. 

 Crangon, sub-species. 



C. vulgaris, Shrimp. Common on our coast. 



C. spinosus, (Pontophilus, Leach, Egeon loricatus, Risso). Obtained in 



Plymouth Sound by Mr. C. Prideaux. Mr. Couch says it is l£ inch 



long, with the carapace covered with spines in regular rows, and the 



chelce singularly formed : he has only seen one specimen, which was 



taken from the stomach of a fish. 

 Processa, sub-genus. 



P. canaliculata, (Nika, Leach). Found at Torcross by Montagu. 

 Hippolyte, sub-genus. 



H. varians. Rocky shores of Devon, plentiful ; Leach, ' Mai. Brit.' 

 H. inermis. " Habitat cum praecedente ; " Leach, ' Lin. Trans.' xi. 347. 



Taken by dredging at Torcross ; ' Linn. Trans.' ix. 

 H. Prldeauxiana. Devon coast ; Leach, ' Mai. Brit.' 

 H. Moorii, Plymouth. Named by Leach after a friend and cotempo- 



rary of his at Plymouth. 

 H. Cranchii. Found in the crab-pots here and in Cornwall. 

 Pandalus, sub-genus. 



P. annulicomis. Coast of Devon, common, particularly in summer, when 



they yield a greater supply than the true shrimp. Museum of the Ply- 

 mouth Institution. 

 Pal^mon, sub-genus. 



P. serratus, (Pal. Squilla of Latreille), Prawn. Devon coast ; Leach, 



* Linn. Trans.' xi. 343. They are not very common at Plymouth. — 



Museum of the Plymouth Institution. 

 P. Squilla. " Habitat cum praecedente in Danmonia australi vulgate ;" 



Leach, ubi supra. 

 P. varians. " Habitat in Danmonia ; " Leach, ' Linn. Trans.' xi. 

 Athanas, sub-genus. 



A. nitescens. Found in South Devon by Montagu ; Leach, ' Edin. Enc' 



vii. 401 . 



Section 5. Schizopoda, have the feet void of pincers, slen- 

 der, and in form of lashes, exclusively adapted for swimming; 

 the ova are placed between them, and not under the tail ; eye- 

 pedicles very short ; the front is pointed or beaked, the shell 

 is thin, and the tail ends in a fin, as usual. 



Mysis, sub-genus. 



M. spinulosus, (Prannus flexuosus of Leach, 'Edin. Ency.' vii. 401; and 

 Cancer multipes, Montagu, 'Linn. Trans.' ix.) Mr. Couch states that 

 this has been named the " Opossum Shrimp," from carrying its ova and 

 young under the thorax, but that he has reason to think it is the male 

 only which does this, in a similar manner to the Syngnathi. It is com- 

 mon in Cornwall as well as here, and migrates regularly into fresh 

 water. 



M. (Cancer scorpionides of Montagu ; Diastylis of Say. See ' Diet, 



des Sciences Nat.' tome xxviii. 337). 

 Nebalia, sub-genus. 



N. Herbstii. Placed here by some, this species has been removed by Cu- 

 vier into Entomostraca, Order Branchiopoda. It is common both in 

 Devon and Cornwall. 



