742 M. W. R. de V. GRAHAM 



Pronotal collar weakly and irregularly margined. Malar space slightly less 

 than half the length of an eye. Antenna (Text-fig. 60 1) ; head (Text- 

 fig. 612) ........ sarcophagae Gahan (p. 776) 



11 (9) Head in dorsal view (Text-fig. 613) with temples hardly one-quarter as long 



as eyes, rounded off. Pronotal collar sharply and evenly margined except 

 just at the sides. Antennae with scape slightly shorter than an eye ; all 

 funicular segments slightly transverse. Propodeal callus not densely 

 pilose, the hairs not hiding the surface. Malar space half the length of an 

 eye .......... maurus sp. n. (p. 770) 



Head in dorsal view (Text-fig. 627) with temples nearly or quite one third as 

 long as eyes, less strongly rounded. Pronotal collar often more weakly and 

 irregularly margined. Antennal scape as long as an eye ; proximal 

 segments of funic le often not transverse. Either the propodeal callus is 

 densely clothed with white hairs which virtually hide the surface ; or the 

 malar space is somewhat more than half the length of an eye . . . 12 



12 (11) Propodeal callus densely clothed with white hairs which hide most of the 



surface. Malar space half, or slightly less than half, the length of an eye. 

 Head and thorax bronze- or bluish black. Antenna, Text-fig. 631 



albopilosus sp. n. (p. 753) 



- Propodeal callus less thickly pilose. Malar space from nearly three fifths, to 



two thirds, the length of an eye . . . . . . . . 13 



13 (12) POL only 1-2-1-27 OOL. Fore wing with postmarginal vein as long as, or 



slightly longer than, the marginal vein. Malar space 0-4-0-45 the length 

 of an eye. Antenna (Text-fig. 633) with funicular segments relatively 

 longer, the first segment as long as the second, quadrate. Length 1-7- 

 2-6 mm. Species found in salt-marshes, but apparently not associated 

 with seaweed ....... littoralis sp. n. (p. 755) 



- POL 1 35-1 55 OOL. Fore wing with postmarginal vein usually at least a 



little shorter than, rarely as long as, the marginal vein. Malar space from 

 three fifths, to two thirds, the length of an eye. Antenna with funicular 

 segments relatively shorter, the first segment at least slightly shorter than 

 the second, usually slightly transverse. Length 1-3-2-1 mm. Species 

 associated with seaweed (Fucus) .... fucicola (Walker) (p. 753) 



14 (8) Antennae with combined length of pedicellus and flagellum equal to breadth of 



head ............. 15 



Antennae with combined length of pedicellus and flagellum at least slightly 



less than breadth of head ......... 16 



15 (14) Antenna (Text-fig. 635) with first funicular segment as long as or slightly 



longer than the second ; none of the funicular segments, except sometimes 

 the sixth, transverse. Pronotal collar finely though sharply margined 

 except just at the sides. Both mandibles with 4 teeth. Larger species, 

 1-9-2-2 mm. 



Head, Text-fig. 614 . ..... caricicola sp. n. (p. 768) 



- Antenna (Text -fig. 639) with first funicular segment slightly to very distinctly 



shorter than the second, and at least slightly transverse ; some or all of 

 the following segments usually slightly transverse. Either pronotal collar 

 less distinctly and more irregularly margined, and left mandible with 3 

 teeth ; or smaller species (length 1-2-1-75 mm.) ..... 38 



16 (14) Head in dorsal view (Text-fig. 615) 2-25 times as broad as long, with the eyes 



prominent and the temples converging strongly. Pronotal collar sharply 

 margined except just at the sides. Antenna (Text-fig. 630) with all 

 funicular segments slightly transverse ; flagellum with rather conspicuous 

 hairs. Head and thorax bluish black .... laticeps sp. n. (p. 760) 



