( 03 ) 



Head. — The frons is ver}' strongly curved in tlie c?, less in the ?. It bears 

 three rows of bristles, the row nearest the eye containing 3 strong bristles ; the 

 second row 4, of wliich the upper one is the strongest, and the third row 

 5 or 0, of which the third from above is the stronnost. There are, moreover, a 

 number of minute hairs before the eye near the aiitennal groove. The occiput 

 bears 3 (less often 2) bristles behind the base of the antenna, a row of 4 or 5 in 

 the centre, and a snbapical row of 5. The rostrum nearly reaches to the tip of 

 the forecoxa, its ajiii-al segment lieing four times as long as it is broad, eiiualliug 

 in length the second segment of the maxillary palpus. The hairs of the second 

 segment of the antenna are hardly longer than those of the first segment. 



Thorax. — The pronotum bears a comb of 19 or 20 spines, and has, like the 

 nieso- and metanotum, a row of 9 or 10 long bristles on the two sides together. 

 On the meso- and metanotum there are in front of this row two rows of small 

 bristles, and on Ihe back a ninnber of additional hairs, these latter being especially 

 numerous on the mesonotuni. The epinieriim of the metatliorax bears 7 or 8 

 bristles (3, 3-4, 1). 



Abdomen. — The tergites have two rows of bristles, except the first, which has 

 a number of additional short bristles in front. There is one long antepygidial 

 bristle ; above it in the £ there is a minute hah- ami l)elow it a short stout 

 bristle. In the ? these two additional bristles are both stout, the lower one being 

 about one-third the length of the central bristle (the upper one is broken). The 

 sternites of segments three to six bear a row of 3 (more rarely 4) bristles in the 

 (?, and 4 (more rarely 3) in the ?, there being no bristles in front of this row. 

 The numbers on the seventh segment are 3 or 4 in the c?, and 5 in the ?. 



Lciju. — Similar to those of C. ]>ollionis, but the first pair of bristles of the fifth 

 tarsal segment are merely bent inwards, not placed in between the second pair. 



Modified Segments. — S ■ The eighth tergite bears 4 or 5 long bristles. The 

 eighth sternite (PI. X. fig. 4, viii. st.) is (juite small, and has 3 to 5 long bristles. 

 The clasper (LU) is truncate, with the upper distal angle obtuse. The movable pro- 

 cess is nearly halfmoon-shaped, and bears 3 strong bristles as shown in the figure 

 (PI. X. fig. 4, f). The ninth sternite is widened ventrally in the middle, and bears 

 here several short stout hairs and a number of small ones. The ajiical portion 

 of the ninth sternite is straight ventrally and bears several short bristles. The 

 manubrium (m) of the clasper is but very slightly curved, and its apex is obtuse. 

 The penis (Pen.) is much widened at the apex, and bears ventrally on each side 



a spine-like process as indicated in the fignre. ?. The eighth tergite has 



about 12 short bristles above the stigma, 2 very long and 1 short bristle below 

 the stigma, and about 12 on the lower ])ortion of the sides. The apical edge of 

 the seventh sternite is very oblique (PI. X. lig. 3). 

 Length, S 2-5, ? 3 mm. 



We have 3 (Jc? and 2 ? ? from Ni(^aragua, taken off Sri tints dij>/>iei, and 

 received from Mr. W. F. H. Rosenberg. 



5. Ceratophyllus lasius sjiec. nov. (PI. X. fig. 0; PI. XI. fig. 10). 



c? ? . A very hairy sjiecies, which is very distinct from an}- other we know. 



Head. — The frons bears a row of :{ bristles before the eye and in front of 

 this row another row of 4 to (i smaller ones, there being also a number of small 

 hairs before the eye. The occiput has 1 bristle behind the base of the anteima, 



