152 



Trigla Hirundo (Yarr.) Sp. cli — Lateral line smooth, pectora. 

 fins large, of a deep blue colour. Rare. 



Cottus Bubalis (Yarr.) Sp. th Preopercnluni with four spines ; 



lateral line rough. Common. July. 

 Gasterosteus trachurus (Yarr.) Sp. ch.-- Lateral plates extend- 

 ing the whole length of the body. Frequent. July. 

 Gasterosteus semiarmatus (5ffrr.) Sp. ch. — Lateral plates ex- 

 tending as far as the vent. Frequent. August. 

 Mugil chelo ( Parr.) Sp. ch — Upper lip thick and fleshy. Com- 

 mon, July 

 Pagellus centrodontus ( Yarr.) Sp. ch. — Eyes large ; a Hack spot 



at the origin of the lateral line. Rare. (See Plate IL) 

 Pagellus erythrinus ( Cuvier.) Sp. ch. — Eyes rather small ; lateral 

 line and base of the pectorals without a spot. Rare. (See 

 Plate II.) 

 Crenilabrus tinea (Yarr.) Sp. ch — Caudal extremity of the bodv> 



plain. Frequent. June. 

 Crenilabrus Cornubicus [Yarr.) Sp. cli.--.\ black spot under the 



caudal extremity of the lateral line. Frequent. July. 

 Leuciscus dobula (Yarr.) Sp. ch. — Dorsal fin nine rays; lateral 

 line fifty scales ; middle ray of the tail more than half as long 

 as the longest ray in the same fin ; dorsal and anal fins even at 

 the end. Common in the river Annan, Dumfries-shire. 

 Alosa finta (Yarr.) Sp. ch. — Teeth in both jaws ; a row of spots 



along each side of the body. Frequent. July. 

 Alosa vulgaris (larr.) Sp. ch. — Jaws without teeth; sides with- 

 out spots. Rare. 

 Pleuronectes hirtus (Farr.) Sp. ch — Under surface smooth ; first 



dorsal ray not longer than the second. Rare. 

 Raia chagrinea (Montagu^ Sp. c!'. — Tail with two rows of carved 



spines ; back rough. Rare. 

 Raia radiata (Yarr.) Sp. ch. — Tail with three rows of spines ; the 

 spines forming the lateral rows three times as small and 

 four times as numerous as those of the middle row. Frequent, 

 April. 

 AmmociBtes branchialis ( Yarr.) Sp. ch. — Mouth without teeth. 

 Rare. Frith of Forth above Stirling. 



3. Dr Macdonald gave an account of a proposed improved 

 system of chemical nomenclature. 



