28 James Watekston, 



present to iise a distinctive iiarae for the DocopJiorus of tlie wren 

 althougli we are strongly inclined to believe that the insect now 

 described lias been recorded alread}^ as Nirnius gulosus N. 



D. troglodytis shows a number of special featiires. To draw 

 attention to these indeed is one of the objects of the subjoined 

 detailed account. The chaetotaxy of the head, the male genitalia, the 

 arcuate arrangement of the hairs placed in the m i d d 1 e of the ab- 

 dominal Segments and not near the posterior edge, as well as the 

 faint transverse anteriorly eroded blotches, will ultimately, we imagine, 

 Warrant the erection of a new genus for the reception of this in- 

 sect. The occipital bands also, so far as they can be made out, 

 converging anterior^, are not of a usual type. We have seen a 

 sirailar form from a Passerine host (in South Africa) and believe 

 that D. mironotafus Kellogg (New Mallophaga, pt. 3, p. 65, tab. 5, 

 fig. 6, 1899) also comes close to it. 



Head. 



(J. Clypeus. Narrowed rather abruptly between the antennae 

 and the suture, thence with sides gently sloped toward one another. 

 Anterior edge concave with rounded angles. Clypeal bands near 

 suture with parallel sides, narrow and tapered in front. Almost at 

 anterior end of band 2 short hairs on dorsal surface, and behind, 

 from below another short hair which barely projects at edge, short 

 hair at suture, another showing at its side occasionally the tip 

 of a long fine hair rising from the middle of the undersurface of the 

 head. In front of suture, between band and signature there is an 

 erect hair on each side. Apparently in anterior portion of signature 

 but rising from below two short hairs. 



The antennal bands, like those of the clypeus, narrow with 

 parallel sides rise at the middle of the Insertion of the flrst antennal 

 Joint and have no connection with the oculars save along the 

 thickened edge of the head. In their anterior portion between the 

 suture and the trabecula 2 short hairs from below. One minute 

 hair before trabecula. 



Signature large; faintly defined. Anterior edge concave. 

 Thereafter the signature contracts, expanding again to its maximum 

 near the level of the suture. Its narrow apex lies obscurely behind 

 the mandibles. Just in front of the mandibles the signature bears 

 a Short stiff hair on each side. 



