189.3.] 43 



fourteenth Begments, and especially in the forms of the raai'blings, from which the 

 markings of Orthosia larvse result, they are identical ; both also taper remarkably 

 to the head, a feature which is even more pronounced in adult suspecta, but is nearly 

 lost in adult vaccinii. The most evident difference (apart from the darker colouring 

 of suspecta) is that in suspecta the pale dorsal line is very marked and distinct, and 

 the sub-trapezoidal line is broken into by the marblings, so as to be discontinuous, 

 though recognisable as a line. In vaccinii the sub-trapezoidal is more pronounced 

 than the dorsal line, it is ragged, but broad enough not to be quite interrupted by 

 the marblings. The dorsal line in vaccinii is narrow, and differs little from the 

 ground-colour, though it is as smooth and well-defined as in suspecta. 



In accordance with the darker colour of suspecta, the pale dots around the 

 tubercles are smaller, and hardly form a feature in the general facies of the larva, 

 and in the case of the anterior trapezoidals, they do not extend in front of the 

 tubercles. Similarly the plate on second segment has its dark areas both darker 

 and rather larger in suspecta. 



The lateral line separating the darker dorsal from the paler ventral portion of 

 the larva has the same disposition in both. It takes in the pale area round the 

 anterior spiracular tubercle, from which a pale line goes beneath the spiracle, thus 

 claiming the spiracle for the line or dorsal ai*ea. On the eleventh and twelfth seg- 

 ments the spiracles are plainly in the dorsal area in both species. In suspecta the 

 inner margin of the sub-trapezoidal line on the dorsal plate of segment two is curved 

 inwards ; in vaccinii nearly straight. All this takes long description, but, as a 

 matter of fact, the actual differences are trifling ; so that up to this point suspecta 

 and vaccinii present only trifling specific differences. 



In the last skin suspecta retains the small head, and becomes so richly coloui-ed 

 as to remind one of ruhricosa. 



The pupa is very like that of vaccinii, but more slender and tapering. The 

 anal armature is also similar. In suspecta the wrinkled boss is larger and longer, 

 and so the secondary spines which cross the two principal lyre-shaped spines in 

 vaccinii, arise further from the apex, and do not do more than fully reach them. 



In larvse and pupae the species of Xanthia and Orthosia differ from each other, 

 often in small matters only, and Glcea is not far off, but suspecta much more 

 resembles Glcea than it does Xanthia or Orthosia, at least as pupa, and as egg, and 

 young larva. 



Firbank, Hereford : 



January, 1893. 



Colias Edusa in January at Algiers. — Apropos of the note at p. 17 ante, con- 

 cerning Colias Edusa, you may like to know that the last time I saw one here was 

 yesterday morning. It flew about as if it were laying eggs.— A. E. Eaton, 

 Algiers : January 10th, 1893. 



Erroneous figures of the larva of Colias Hyale, L. — At meetings of the South 

 London Entomological Society last month (November) full-grown larvae and also a 

 pupa of Colias Hyale were exhibited by Messrs. Hawes and Williams, eggs having 

 been obtained by Mr. Hawes from a captm-ed female, and the larvse successfully 

 reared. They were so similar to those of C. Edusa, that they might readily have 



