Johnston and Harrison. — Mallophaga from the Kermadecs. 



365 



in a length of 6 mm., which hardly justifies an assumption of specific differ- 

 ence. It seems to us possible that Piaget has read Westwood's measure- 

 ment as millimetres, not lines. 



Westwood's description is short, and his figure poor, but there is 

 nothing in either to indicate a specific difference between the forms described 

 by him and by Piaget. The poorness of his figure may be accounted for 

 by the fact that Andstrona is very difficult to view satisfactorily under a 

 microscope, the variations in thickness being comparatively so large. As 

 a matter of fact, Piaget has fallen into error in his figure of the ventral 

 parts of the head, for he figures as a posterior production of the hind-head 

 what is really an anterior intercoxal production of the prothorax. 



Kellogg (1896, p. 50 ; 1899, p. 116) obtained specimens of an Andstrona 

 from various petrels on the Californian coast of the North Pacific, which 

 he has referred to A. gigas Piaget. 



Finally, the individual we have under review comes from the South 

 Pacific, and on that account might well be expected to agree with West- 

 wood's species rather than Piaget's, if the two were distinct. We find it 

 agrees with Piaget's description of A. gigas in all details except size, as 

 it measures only 4 mm. 



We conclude from the foregoing that there is only one species so far 

 known in the genus, and we rank A. gigas Piaget as a synonym of A. pro- 

 ceUariae Westwood. 



Philopteridae. 

 Lipeurus kermadecensis n. sp. 



Description of Female. — Head subcorneal, elongate, narrower in front ; 

 anterior portion of clypeus obtusely rounded and transparent ; lateral 

 margins of forehead strongly chitinized, with narrow transverse interrup- 

 tions to roots of marginal hairs, and. continued as antennal 

 bands behind antennary fossa, ending internal to the eye ; 

 temples rounded, not distinctly wider than at trabecular 

 angles, without distinct bands ; occiput roundly emargin- 

 ate ; all the hind-head evenly chitinized, with transparent 

 interspaces from the antennary fossae meeting in the 

 middle line at about half the distance between the line 

 of the antennae and the occiput, and continuing to apex 

 of occipital emargination ; from each branch a lateral 

 interspace given off, passing posteriorly parallel with 

 temporal margins to occiput ; trabeculae practically absent ; 

 antennae with 1st and 2nd segments equal and longest, 

 5th next in size, 3rd and 4th smaller and about equal ; 

 3 marginal hairs on side of forehead, corresponding to 

 interruptions through the lateral band ; between the 

 anterior pair a dorsal and a ventral hair, internal to 

 lateral band ; small hair in front of trabecular angle, 

 and one at angle ; 4 or 5 small hairs round temporal Lipeurus kermadec- 

 lobe, that at temporal angle more prominent than the ensis. 0. 

 others ; 2 pairs of hairs on dorsal surface of forehead . 



Prothorax approximately rectangular, broader than long, evenly chitin- 

 ized, slightly darker at antero-lateral margins, with a median interrup- 

 tion. Metathorax more than twice as long as prothorax, approximately 

 rectangular, anterior angles slightly truncated, lateral margins somewhat 



Fig. 1. 



