312 TJie Life HlMorif of '' Wireworms'' 



just anterior to the anterior row of setae and to the spiracles in the case 

 of the abdominal segments. On the 9th tergite they extend almost to 

 the anterior margin of the sensory pits. 



The main portion of each tergite is, compared with that of ^. obscurus, 

 distinctly rugose and coarsely pitted with rather deep and irregularly 

 shaped punctures (Plate XIII, fig. Ic). The posterior portion of the meso- 

 and meta-thoracic and of the 1st to the 8th abdominal tergites, as well 

 as both anterior and posterior margins of the pronotum, are occupied by 

 similar borders of longitudinal striations as in obscurus. The prothorax 

 and 9th abdominal segment are dorsally somewhat smoother than the 

 other segments of the body but have more and deeper punctures than 

 the corresponding segments of A. obscurus and also some irregular rugae. 



Of the setae with which the tergites are furnished; the longer ones 

 of the two rows on the prothorax are about equally long, but in the case 

 of each of the succeeding segments, up to the 8th abdominal segment, 

 those of the posterior are longer than those of the anterior row. The 

 same proportion in the respective length of the setae applies to A. 

 obscurus, though it is not made clear in my description (Pt. II, pp. 200- 

 201). The chaetotaxy of the 9th abdominal segment is also generally the 

 same, though an extra seta near the posterior margin of each sensory 

 pit occasionally present in A. sputator and shown in Plate XIII, fig. la, 

 has not been observed in A. obscurus. 



In the pleurite of the meso-thorax the granulations extend from the 

 anterior margin, along the ventral margin of the spiracle to its posterior 

 end, the dorsal side being smooth. In the epipleurites of the abdominal 

 segments there is also a little granulation at the anterior end of each, 

 the remainder of the surface being punctured similarly to the sternites. 

 On the ventral surface the -prosternum is almost smooth, but its posterior 

 portion as far as the coxae is granulate and the granulations extend on 

 the posterior side of the coxae themselves for half their length. The whole 

 of the meso- and meta-sterna are granulate and the basal half of the 

 coxae belonging to the same segments have granular areas corresponding 

 to those of the anterior coxae. Similar granulation of areas on the ventral 

 surface of the thorax has been found in A. obscurus. 



The abdominal sternites are more sparingly punctured than the ter- 

 gites and bear, in addition to the punctures, a number of irregular, more 

 or less transverse, furrows. On the anterior margin of each sternite there 

 is a band of granulations, as on the tergites, extending backward as far 

 as the anterior row of setae. On the 9th abdominal sternite the granu- 

 lation extends almost to the base of the pseudopod, while that portion 



