ROTHSCHILD, SIPHONAPTERA. 3 



Moeopsylla sjocstedti spec. nov. 



PI. 1 fig. 15. - -Head. The frons especially in the J 1 (fig. 1) is strongly 

 rounded. There is a bristle in front of the eye and another near the oral edge. The 

 occiput bears on each side a bristle behind the base of the antennal groove, two or three 

 in the centre and a row of three or four before the hinder edge, there being in the J 

 also a row of minute hairs along the antennal groove. The maxillary palpus reaches 

 to the apex of the forecoxa, the second segment being longer than the first. Thorax. 

 The three thoracical tergites bear a row of 4 bristles on each side. On the mesoster- 

 nite there are two bristles clorsally of the stigma. The episternum of the metathorax 

 bears one bristle, while there are two rows on the epimerum (3 or 4, and 5). Ab- 

 domen. The abdomen is closely applied to the thorax. The tergites 1 to 6 bear 

 two moderately long bristles at each side on the back and a small hair behind the 

 stigma, on the third tergite () or on the second and third (J 1 ) there being usually 

 a third dorsal bristle present. The corresponding hairs of the seventh tergite 

 are small. The subapical bristle of this tergite, placed on a cone, is of about 

 the same length as the bristles of the metathoracical epimerum. This bristle 

 is accompanied by a small hair standing dorsally of it. The sternites of seg- 

 ments 2 to 6 bear one bristle on each side. Legs. - -The midcoxa is small, being 

 almost oblong and practically lacking the internal forked rod-like incrassation found in 

 other Pulicidae. The hindcoxa is widest near the base, being longer than it is broad, 

 and bears one long and two short bristles posteriorly at the apex. On the inner side 

 there are two irregular rows of numerous short spines. The hindfemur is slender; its 

 underside is flattened, the edges being almost carinate, the femur appearing in side- 

 view almost angulate near the base where the flattened portion begins. The hind 

 femur bears one (?) or two (<?) bristles on the outerside ventrally before the apex, 

 while there is a complete sub ventral row of bristles on the inner surface. The brist- 

 les at the hind edge of the tibiae are few in number, being moreover short and thin 

 on the midtibia. There are only three distinct notches at the edge of the midtibia 

 inclusive of the apical notch, the longer bristle situated in the central notch being 

 only a little longer than the tibia is broad. The bristles of the midtarsus are thin, 

 with the exception of those on the fifth segment, which are comparatively stout. The 

 hindtarsus is much broader than the midtarsus. The first segment of the hindtarsus 

 bears one pair of short stout bristles besides the apical bristles, all the other bristles 

 being thin, segments 2 to 4 are triangular in outline, the fourth segment bearing a 

 long thin apical hair reaching to the apex of the fifth segment. This last segment 

 is slender and bears on each side, in all the tarsi, four bristles of which the fourth 

 is the shortest and thinnest, there being moreover a long thin hair on each side at 

 the apex. The proportional lengths of the mid-and hindtarsal segments are as follows: 



Midtarsus <? 18 22 13 7 26 



? 22 27 15 9 30 



Hindtarsus <? 32 23 16 10 30 



? 44 26 18 12 32 



