new Species of Lice. 107 



V-s]ia])C(l (F., fi^. 7) groove niimiiig In transversely from tlie 

 cutliiig-oJgc. Tlie riyht maiulible lias two apices. At tlie 

 base the lower of these twoapieal teetli is transversely ribbed, 

 this ribbed siirtace working against a surface siniiiariy ribbed 

 on the lower side (and theieforo not visible in the figure) of 

 the first apical tooth of the opposite mandible. 



First JMaxilUe. — Soft lobes, longer than broad, with a 

 small piece of thicker chitin on the outer margin as a support. 



Labium. — The so-called paraglossu', columnar, striiight, 

 are rather long with soft, rounded, distal ends. On the 

 inner surface at the tij), four or five s})inLS nearly as long as 

 the lobe itself and all pointing inwards. Between these two 

 appendages, the anterior margin of the labium runs out into 

 two small round prominences, each possessing a few small 

 spines. 



Isopogometric Apparatus. — CEsophageal sclerite very 

 rounded, a little broader than lung. No posteri(jr cornua. 

 Anterior cornua thinh' ehitinizt d, short, rather broad, and 

 invisible without dissection. 



Measurements {inilliinetrc-sca^e) . 



»• Liiiognathoidcs citelli, sp. n. 



In the 'Bulletin for Entomological Research' (vol. v. 

 ])t. 2, Sept. 191-i, p. IGO) I described a new species of 

 -(\noplura from a Sciurid, Citiiius lepludaclylus^ under the 

 name Linoi/natlioides sperinopkili. Mr. Launcelot Harrison, 

 li.Sc, has kindly pointed out that this name has already 

 been used by Giubc under a figure of Linorjuathus lavi- 

 Uficulus (Grube) in .Middendorff's ' Sibirischer Keise gesamm. 

 Parasiten Zool.,' vol. ii. p. 498, t. ii. fig. 3 (1851). I there- 

 fore rename Linognathoidcs sjirrDiophili as Linognathoidcs 

 citelli. 



