Paraspiniphora. 103 



some few small oral bristles, and a little higher up some bristles which 

 may perhaps be termed genal bristles. One long and conspiciious 

 lower postociilar bristle. Thorax with one or two pairs of dorsocentral 

 bristles or {domestica, non-Danish) with one pair in the male, two in 

 the female. Scutellum with four bristles. Mesopleura bare or {spino- 

 sissima, Bohemanni and erythronota) hairy and with one very long 

 bristle near the hind margin. Abdomen in the male with second and 

 sixth segment more or less elongated. Hypopygium somewhat small 

 to rather large; it is not symmetricai as the two sides of the tergum 

 are not eqiially sized ; below or at the end of the right side is a narrow 

 piece, and in some species {Bergenstammi and notata) there is a some- 

 what triangular piece between the left side and the sixth segment; 

 sometimes a distinct ventral plate is seen; anal tube short, some- 

 times quite short, almost not protruding. In the female the sixth 

 segment is more or less elongated, and in Bergenstammi and notata 

 the seventh is deeply incised above. Abdomen is rather sparingly 

 haired with short hairs, generally a little longer at the sides; they are 

 longish at the hind margin of sixth segment and at the hind corners 

 of second segment are longer hairs or the lateral margin of this seg- 

 ment has long, somewhat dense hairs. Legs with strong bristles, 

 front tibiæ with a dorsal bristle, middle tibiæ always with one well 

 developed anterior bristle at about the lower third and with a pair 

 of bristles near the upper fourth, and sometimes (in non-Danish 

 species) with still more bristles, hind tibiæ with two to four bristles 

 or sometimes (in non-Danish species) with more numerous bristles; 

 posterior tibiæ with long apical spurs ; legs for the rest simply clothed 

 with short hairs; as usual special, short, bristly hairs arranged in 

 comb-like rows are present on posterior side of the apical part of hind 

 tibiæ and on posterior side of metatarsus, and a similar arrangement 

 is seen just at apex on anterior side of front tibiæ; on the antero- 

 dorsal side of middle tibiæ in the apical part the hairs are longer and 

 also somewhat row-like arranged; in Bohemanni and erythronota the 

 hind tibiæ have the hairs otherwise arranged than in the other species, 

 the hind tibiæ have here special short bristly hairs arranged in comb- 

 like transverse rows on the dorsal side in the whole length. Claws 

 and pulvilli of common sliape in Bohemanni^ erythronota and spino- 

 sissima, and the empodium small and bristle-shaped, but in Bergen- 

 stammi, immaculata and notata (as well as in the non-Danish dome- 

 stica and maculata) there is here a curious sexual dimorfism, the 

 claws and pulvilli in the male being of common shape, but in the 



