362 DR. JOHNSTON ON THE ACARIDES OF BERWICKSHIRE. 



2. S. APiCALis, Hardy MJSS. 



Flava ; tliorace subferrugineo, ulbo-vix-micante, linea longi- 

 tudinali, margin ibusque lateralibus ferrugineis ; meta-tho- 

 race Maris subcinereo ; puncto verticis anoque iiigris ; pedibus 

 concoloribus, apicibus tarsorum vix fuscescentibus ; antennis 

 flavis, seta nigra, sparse pubescente ; alis hyalinis, nervis fla- 

 vis. Long. Corp. vix 1. H. Exp. alar. lin. 3. 



Var. Dorso thoracis cinereo, lineis tribus longitudinali- 

 bus fuscis ; scutello cinereo fiavo-limbato ; abdomine supern^ 

 fusco. 



The larva mines the leaves of the Turnip and the Pea ; 

 and on the sea-coast, it is found as late as the end of October 

 in those of the common Scurvy-grass (Cochlearia officinalis) 

 and the Lady's fingers (Anthyllis mdneraria). It mines 

 sometimes in companies of four or five ; but in a small leaf, 

 many of these desert the seat of the original colony, and 

 commence a separate establishment. In some leaves the 

 pulp is so completely dug away, that the upper cuticle can 

 be separated entire. In the turnip, it sometimes, as else- 

 •where remarked, cuts out long channels down the stalks ; 

 but this office more particularly belongs to another Dipterous 

 miner, whose history remains still to be written. 



The AcARiDES of Berwickshire Specifically Described. 

 By George Johnston, M.D., &;c. (Continued from Page 316.) 



20. Trombidium curtipes. 

 Tr. sanguineum pedibus palpisque clarioribus, corpore pos- 

 tice integro setis simplicibus brevissimis tomentoso. Long. | 

 lin. — Acarus sulcatus, ruber, abdomine ovato rugoso ; pedibus 

 mediis brevioribus, Mull. Zool. Dan. prod. 1 87. — Trombidium 

 curtipes, Herm. Mem. Apter. 26. pi. 1, fig. 4. Walck and Gerv. 

 Insect. Apt. iii. 177. 



Deso. Mite small, of a scarlet colour, with brighter legs, 

 palpi and rostrum : Body elongate-quadrangular, depressed, 

 shouldered in front, widely sinuated on the sides at the mid- 

 dle, rounded and narrowerbehind,tomentose; the back flatten- 

 ed, uneven with two transverse foveolate furrows and a foveola 

 farther backwards : Rostrum triangular : Mandibles large, but 

 not long, armed with very unequal chelae, the external curved 



