^^ FiUTz Johansen and I. C. Nip:lsen. 



The larvae take two years to become full-grown. 



The larua when full-grown is 3—4 cm. long, the colour is light- 

 brown, darker anteriorly, with a fine silky pubescent sheen. The 

 form is linear, pointed anteriorly, the body round in section. The 

 segments in the middle, both on the dorsal and ventral surfaces, 

 with a transverse row of 4 short bristles; on the underside the two 

 innermost bristles are somewhat further forward than the two outer. 



The head has the usual form in Tipula larvae and can be re- 

 tracted into the following segment. 



The antennae (fig. 1 a) are articulated to a soft area in the ante- 

 rior margin of the head-capsule, they are single-jointed, brownish, 

 thick and slightly pointed in front: the tip is soft, flatly arched and 

 bears two sense-processes, the one broad and flatly arched (fig. 1 b) 

 and the other narrower and more pointed. On the inner side of the 

 antennae, almost at the middle, there is a round, scar-like area, presum- 

 ably some organ of sense, recalling an organ which Simon Bengtsson ^ 

 has found on the maxillary palp of the Phalacrocera larva (fig. 1 c). 



A number of setae occur between the antennae. 



The front part of the head is soft-skinned and covers the mouth- 

 parts like a plate. 



On this plate, which most probably corresponds to the clypeus 

 and labrum in other euceplialic Nematocera larvae, there is on each 

 side a chitinous list (fig. Id) which is bent at an angle; the posterior 

 branch, which is parallel with the anterior border of the head and 

 lies somewhat far from this, sends backwards a chitinous ridge 

 which goes down towards the underside of the plate; the front 

 branch, which is narrower than the posterior, is directed towards 

 the anterior margin ot the head; here it is again bent at an angle 

 out towards the side of the head and from its point projects a ridge 

 pointing obliquely forwards. In front of this terminal part of the 

 list, on a somewhat projecting portion of the anterior margin of 

 the head, there is a single thick, somewhat bent bristle and also a 

 number of smaller setae. 



The underside of the plate is densely beset with projecting 

 bristles, which in front are thick, large and placed in rows, but 

 further back become thinner and form a dense felt. On each side 

 of the head a dense clump of bristles projects out over the anterior 

 margin (fig. 1 e). 



The mandibles (fig. 2) are strong, flattened and incised at the 

 tip, so that they end in two teeth, of which the outer is the larger. 



1 Simon Bengtsson; Studier ofver Insektlarver, I. Phalacrocera rcplicata Lin. 

 (Kongl. Fysiogr. Sällskapets i Lund Handlingar. Ny Följ p. 84 l<S97j. 



