168 MEMOIRS OF THE QUEENSLAND MUSEUM. 



postscutellum barely separated by sutures, very small, transverse; propodeum not well 

 differentiated from the plane scutellum, not much inclined, smooth, nonearinate, nonsulcate, 

 but its lateral margin very distinctly carinated or rimmed. Propodeal spiracle minute, round, 

 cephalad. A long seta from each side of base of abdominal petiole on propodeum; and a 

 someAvhat shorter one on each side of meson of pronotum just before its caudal margin and 

 one from each latero-eaudal angle. Scutellum and scutum wholly naked. A short seta from 

 center of each axilla. Head, thorax, legs, pedicel and abdominal petiole dark red brown; rest 

 black. 



Differs from poincarei as follows: In the second band of the fore wing which has the 

 caudal margin deeply notched the whole forming a V; in poincarei, the caudal margin is 

 straight. The two arms of the V thus formed are unequal, the longer being the cephalic. 

 Also, the whole stripe is shorter, plainly shorter than the space between the stripes, not subequal 

 to it as in poincarei. Nearly the distal half of the linear hind wings is dusky in both species. 



Differs from the description of the male of poincarei in that (the club is somewhat 

 shorter than funicle 1) f utricles 2-8 are each about seven times longer than wide, 1 about 

 five times longer than wide. The pedicel is somewhat longer than wide. The wing pattern is 

 also different. Compared with female type of poincarei. 



Described from one male caught in jungle, August 2, 1914 (A. P. Dodd). 



Habitat: Harvey's Creek (Cairns), Queensland. 



Type: No. HyS473, Queensland Museum, Brisbane, the specimen on a slide. 



Dedicated to G. W. F. Hegel. 



In describing forms in this family it is necessary to examine the thoracic structure and 

 the sculpture since species may differ in this alone. Also, the thorax will have to be used 

 largely in the classification of this group and I have already applied it in the case of Anagrus 

 and allied genera. Special notice should be taken of those sclerites following the scutum. 



CORRECTION. 1 



Page 115, first supplement, volume II. line 9, peregrinium read peregrinam. 



COLLECTION, PRESERVATION AND DESCRIPTION OF MYMARIDAE. 



The fragile and delicate insects of this family may be collected by rearing, by sweeping 

 and by scanning windows. The last two yield the largest number of specimens and species but 

 the first is of importance because of the additional data obtained. Immediately after collected, 

 the specimens should be killed by immersion in alcohol and preserved in this medium (about 

 fifty per cent, with water) until they are to be studied when after preparing the balsam mount, 

 they may be removed by means of a camel's hair brush to a clean slide, fixed in suitable 

 positions for studying the thorax and sculpture while still wet and as the uppermost parts dry 

 off, placed quickly upon the stage of the microscope and the desired notes made. By adding 

 dilute alcohol from time to time at this stage, a more or less leisurely study may be made of 

 the entire dorsal surface (the forms without a phragma may be allowed to dry out completely). 

 As these procedures are to prevent shrivelling, after the notes have been made, the specimen 

 should be allowed to dry long enough for all of the surface fluid to become evaporated and 

 then with the aid of a needle or pin dipped in balsam, rapidly transferred to the prepared 

 slide, immersed in the xylol-balsam and covered in the usual way. If necessary, clearing may 

 be accomplished by heating until the xylol-balsam boils gently. These simple methods are 



1 For additions see supplement to Part V and Part XV. 



