130 PROCEEDINGS OF THE 



With glahicollis the antennae are generally pale luteoiis on the 

 under side. According to Thomson, it is met with as far north 

 as Lapland. 



2. Spinarum, Fab. 



This is the insect formerly too well known under the name of 

 "nigger," "black Jack," "black canker," or the saw-fly of the 

 turnip, and whose anatomy has been so well described by 

 Newport in his classical prize essay. Its ravages on the turnip 

 appear to have been first noticed in Britain about 1788, and 

 between that and 1840 it committed very great damage, but of 

 late years scarcely anything has been heard of it; indeed, it now 

 seems to be very rare, and I have never seen a recently captured 

 specimen. I know not if it was ever injurious to the turnip in 

 Scotland, or if it has been met with in Scotland at all. Mr James 

 Hardy tells me that he recollects seeing the larvae in Berwickshire, 

 but they may possibly have been those of glahricollis. 



Sjnnarum has a very wide distribution. It extends very far 

 north, and eastwards to Japan and India, the Oriental specimens 

 differing from the European in having less black on the 

 mesonotum. 



3. Tibialis, Cameron. 



A common East Indian species, easily recongised by the more 

 or less luteous mesonotum and blackish tibiae and tarsi. 



4. RosAE, Linn., 



is the commonest form, and is very prone to vary, especially in 

 the coloration of the breast and pleurae, and to a less extent in 

 the markings on the tarsi. Dours says that the larva feeds on 

 roses, but this is doubtful. It is fond of frequenting various 

 flowers. Mr James Hardy writes me that he has noticed that it 

 has a great partiality for the flowers of Ajuga reptans. In the 

 British Museum there is a specimen from the west coast of Africa ; 

 which has the breast and pleurae quite black, and the wings rather 

 yellower than is usual, but otherwise is scarcely to be dis- 

 tinguished. 



5. Haematopus, Klug. 



This is a Soutli African species. It is easily separated from 

 rosne by the totally black thorax and tegulae, and is also consider- 



