272 [May, 



than the ' Paddies,' and have selected Canada for their future home in 

 preference to the United States. But to come to Antho. Cardamines : 

 One day in May, 1860, at Sligo, I saw more of this insect than I have 

 seen in all my life before or since ; the fields were alive with them, and 

 even in the streets of the town they swarmed. They did not appear to 

 be moving in any one direction, like the migrating clouds of Callidryas, 

 of which travellers in tropical countries tell us, but to be ilitting about 

 on their ordinary avocations, only in extraordinary multitudes. 



I am unable to say whether this species is usually very abundant 

 at Sligo, but on the eastern side of the island, Cardamines is not a very 

 common insect. 

 LeiicopJiasia Sinapis. 



This butterfly is pretty generally distributed in the west and south, 

 and is very abundant near Galway. I have not met with an autumnal 

 brood in Ireland, although I have carefully searched the spots where it 

 abounds in June. 



10, Chester Street, Bradford : March, 1865. 



(To he continued). 



AN ESSAY TOWARDS A KNOWLEDGE OF BRITISH HOMOPTERA. 



BT THE EEV. T. A. MARSHALL, M.A., F.L.S. 



(^Continued from page 253). 



(3.) Frons sub ipsis oculis latissima, dein ad clypeura sensim 

 angustata. 



a. — Frontis carina media in vertice obsoleta. 

 13. — Delijhax hi^uhrinuSj Boh. s 

 I. — Forma hrachyptera, ,$ . Testaceus, abdomine nigro, supra plus 

 minus testaceo, segmentis 2-3 ultimis interdum totis testaceis. Grense 

 sub autennis plus minus nigra). Carina media in fronte sat conspicua, 

 in vertice indistincte fuscata et postea obsoleta. Scutellum basi 

 utrinque nigro notatum, vel nigrum, apice testaceo. Hemelytra paulo 

 ultra abdominis dimidium extensa, nigra, basi testacea, apice anguste 

 albo limbata. Pedes testacei, coxis nigris. Segmcntum genitale 

 magnum nigrum. $ Totus testaceus, hemelytris dimidio abdomine 

 brevioribus, nervis validis, fuscis, impresso-punctatis, costa undique 

 pallida. 



II. — Forma macroptera, $ . Hemelytra testacea, pellucida, ab- 

 domine longiora. Long. <?> 1^5 ? » 2^ lin. 



Boh., llandl., 1817, p. 55. Flor, R. L., 2, p. 73. St"il, Ofv., 

 1847, p. 266. 



