THE ENTOMOLOGIST. 201 



My friend Mr. Rye suggests that the two so-called species 

 are merely minor and major developments of N. ruspator and 

 N. inlerriiptus respeclively, and I should not be at all asto- 

 nished if this theory turns out correct; for we undoubtedly 

 find it to hold with respect to some cognate insects, espe- 

 cially Anisotoma calcarata, which exhibits three well-marked 

 forms of the male, varyiug in size, curvature of the tibia3, and 

 spinous development of the femora. 



I hope that what 1 have stated will call attention to these 

 insects, and enable us to obtain material for the farther elu- 

 cidation of the subject, perhaps in the next 'Annual.' 



John A. Power. 



March 27, 1865. 



Description of the Larva of Lohophora polycommata. — 

 The egg is laid in April or May, on Lonicera periclymenum 

 (honeysuckle) or Fraxinus excelsior (ash), on both of which 

 the larva feeds in confinement : it is full-fed about the mid- 

 dle of June, and then rests in a nearly straight position, the 

 head prone, indeed bent completely under, and the mouth 

 closely pressed against the legs, which are crowded together, 

 and directed forwards as if purposely to meet the head. 

 Head decidedly smaller and narrrower than either of the 

 following segments ; 2nd segment slightly dilated at its an- 

 terior margin, thus forming a kind of shallow cup into which 

 the head is partially received : body obese, of uniform sub- 

 stance and cylindrical, with the exception of a dilated lateral 

 skinfold ; its surface both above and below most delicately 

 shagreened : 13th segment terminating in two pointed pro- 

 cesses directed backwards. Colour of the head dull but pale 

 green ; dorsal surface of the body dull green, with a narrow 

 medio-dorsal stripe slightly darker ; tins is sometimes so 

 faint as to escape observation ; indeed it may possibly arise 

 at all times from the presence of food in the alimentary 

 canal ; ventral surface with a broad median stripe of glau- 

 cous-green, having within it a narrow medio-ventral stripe of 

 a still paler and almost white-green ; but this, like the medio- 

 dorsal stripe, is very obscurely defined ; the dilated skinfold, 

 exactly intermediate between the dorsal and ventral surface, 

 is whitish yellow, and forms a conspicuous lateral stripe 



