1017.] 



99 



ON A NEW SPECIES OF DOCOPHOROIDES GIGL. (EURTMETOPUS 

 TASCH.) FROM AN ALBATROSS {DIOMEDEA MELANOPHRYS). 

 BY JAMES WATERSTON, B.D., B.Sr. 

 (Imperial Biireaii of Entomology, London). 

 Dr. L. Periiigiiey, Director of the South African Museum, has 

 recently submitted to me a new DocojyJioroides from the black-browed 

 albatross. The male of this species is the 

 most distinct and interesting of the genus 

 yet discovered, and as my second report on 

 the Mallophaga in the South African Museum 

 is likely to be somewhat delayed, I have 

 drawn up the following short description. 

 B. harruoni, n. sp., is closest to the genotype 

 D. treiv^Duf. (1834). 



Docnphryroides harrisoni, n. sp. 



^ . Head similar to that of brevis, but much 

 more contracted and shorter anteriorly ; clypeal 

 angles rotmd, and the signature broad, 16-17 

 bristles in two rows on the temples at each side, 

 4 towards the prothoracic angles. First and 

 second tergites of abdomen with 8 bristles, third 

 and fourth with 4, and the rest with two, except 

 the ninth, which bears 8, 8. 



Dimensions: length, 2.95 mm ; greatest breadth 

 of abdomen (segm. 4), 1.25 mm. ; length of head, 

 .85 mm. ; breadth, 1.05 ram. ; breadth of jirothorax, 

 .67 mm. ; of metathorax, .91 mm. Genitalia (fig.) : 

 basal plate long (three times as long as the distal 

 mesosome), anteriorly narrowed and shortly 

 rounded without the distal ventral splints found in 

 shnplex Waterst. and pacificus Kell. There are no 

 terminal anchoring processes such as occur in the 

 other known species. The median basal ventral 

 chitinization is small (c/. hrevis). 



? . Nearly 3.1 mm. ; breadth, 1.43 mm. : head 

 length, .98 mm. ; breadth, 1.05 mm. ; prothorax as 

 in (J ; metathorax breadth, .98 mm. Lateral marks 

 on the ninth sternite very elongate wedge-shaped, 

 broadk-st anteriorly, and nearly converging to a 

 point posteriorly. The greatest breadth is about 

 quarter the length. In the female of hrevis the 

 same marks are roughly in the shajDo of a parallelo- 

 gram, whose length is thrice the breadth. 



Type (J (to be deposited in the South African 

 Museum) from D. melanophrys. 



British Museum (Nat. History) : 

 April lOth, 1917. 



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