Johnston and Harbison. — Mallophaga from the Kermadecs. 369 



bands, and in each lateral curve is a small tubercle : in front of mandibles, 

 and internal to lateral bands, a more or less oblong uncoloured space, con- 

 taining in its centre a dark oblong blotch with serrated lateral margins : 

 trabeculae fairly strong, coloured, and extending to 2nd segment of antennae ; 

 on dorsal surface, at base of trabeculae, an acutely conical process set in a 

 papilla, resembling those found in Giebelia; antennae short, slightly bent 

 from 2nd segment, with 1st segment longest, then 2nd. then 5th ; 3rd and 4th 

 equal and shorter ; eye not prominent, with bristle ; occipital bands strong, 

 very slightly converging from the anterior angles of the prothorax to the base 

 of the mandibles ; temples dark, mammi Hated, with at least 2 pustulated 

 hairs about angles ; occipital signature conical, the apex meeting a second 

 larger cone, with its base along the articulations of the mandibles ; between 

 these and the occipital bands, subtriangular uncoloured spaces ; hind 

 margin slightly sinuous, projecting a little on to prothorax ; oesophageal 

 sclerite and glands fairly conspicuous (in cleared specimen) ; few hairs 

 are observable ; beyond the pustulated hairs already mentioned only a 

 short hair at trabecular angle and a stout spine behind the eye can be made 

 out, but the hairs may easily have been abraded off the specimen. 



Prothorax half as long as head, and seven-tenths as wide ; with 

 slightly convex posterior margin ; angles rounded, and sides converging 

 anteriorly ; lateral areas brown, with median uncoloured space ; apparently 

 1 spine and 1 small pustulated hair in posterior angle. Metathorax about 

 half as long as prothorax, and wider, with sides convexly diverging from 

 in front to prominent postero-lateral angles, thence curving to an almost 

 straight hind margin ; a spine and a hair in postero-lateral angle ; and 

 apparently a couple of pustulated hairs on either side on hind margin ; 

 latter with a strong brown band on its free portion ; all, except a median 

 uncoloured line, of uniform brown colour ; sternal markings of two pairs 

 of very strong intercoxal lines, the posterior pair forming T-shaped struc- 

 tures with lateral lines external to the coxae. 



Abdomen of 9 segments, orbicular,, widest at 4th segment, and with 

 last segment small and apparently bifid ; the first 7 segments with 

 triangular lateral blotches, elongated inwards ; blotches of 8th segment 

 quadrilateral ; 9th with only small suffused blotch ; 1 to 3 pustulated 

 hairs in posterior angles of segments, and a few hairs along hind margins, 

 as well as several on the uncoloured space in centre of abdomen : but no 

 accurate description of the number and disposition of hairs is possible, 

 owing to the condition of the specimen ; on the ventral surface, small 

 blotches corresponding in shape to those of segment 8 ; no genitalia observ- 

 able- 

 Total length, 1-38 mm. ; breadth, 0-60 mm. ; head, 0-42 mm. by 0-50 mm. 

 It is unfortunate that we have not at our disposal better material of 

 this species, which we have included in the genus Philopterus, but which 

 presents some affinities with Giebelia. From this genus, however, it is 

 clearly marked off by the uniform chitinization of the dorsal surface of 

 the clypeus, and the absence of the ventral membranous flap. When 

 more material is available it may be necessary to make the species the type 

 of a new genus. 



Philopterus wallacei n. sp. 



This species has the general form and characters of Philopterus fulicji- 

 nosus Kellogg (1896, p. 80) from Charadrius squatarola, but differs in the 

 following points: Length is 1-67 mm. against 1-62 mm., breadth 0-95 mm. 



