igS Searle, Some New Victorian Copepoda. [^'"^r'eif ^'' 



BoECKELi.A PSEUDOCHEL.E, J. Searle, n. sp. 



Specific Characters. — Body of female robust, oblong, rounded 

 off in front, head and segment fused with it longer than the two 

 following segments. 



Lateral projections on fifth thorocic segment scarcely diver- 

 gent — triangular ; the inner ones, when viewed from the dorsal 

 side, appear nearly equal in length to the outer ones, but 

 distinctly hooked outwards at the tip. Seen from the side they 

 are broad triangular plates, extending downwards considerably, 

 and apparently shielding the genital segment. 



First antennae twenty-five joints, when reflexed reaching to the 

 end of the first abdominal segment. Genital segment broad, 

 slightly asymmetrical, protuberant on ventral side. Abdomen 

 consists of three segments, and is about one-third the length of 

 the body. 



Fifth pair of legs in female resemble B. triarticulata, but are 

 more slender. Fifth pair of legs in male are very remarkable, 

 and are powerfully developed. Right leg — exopodite two- 

 jointed, ending in a stout claw, which has a chela-like append- 

 age at the tip, hence its specific name. Endopodite one-jointed, 

 shaped at the base somewhat like B. oblonga, but is bluntly 

 notched at the distal end, and is much swollen in the middle ; 

 it extends beyond the two joints of the exopodite. Left leg — 

 exopodite two- jointed, the last joint being very slender and 

 fused to the terminal claw ; second basal joint ends in a rounded 

 lobe inside, which is a triangular plate. Attached to this joint, 

 and extending nearly to the end of the first joint of the exopo- 

 dite is a thin, flat, hyaline plate, not easily seen unless the limb 

 is moved about. Right antennae of male geniculated ; the 

 peculiar projection on the second last joint forms a marked 

 feature, closely resembling that of B. rubra. 



Colour. — Reddish-brown. 



Length. — 2.50 mm. 



Occurrence. — Yarra Glen, West \\'arburton, Mansfield, Fair- 

 field. 



Explanation of Plates. 



Plate iil, Brunella longicornis,^. Searle, n. sp. — Fig. i, adult female, x 29. 

 Fig. 2, last thoracic segment and abdomen, female, side view. Fig. 3. fifth 

 thoracic leg of female. Fig. 4, first antenna of male. Fig. 5, fifth pair of legs 

 of male. 



Plate iv., Boeckella jiyoraensis, J. Searle, n. sp. — Fig. i, adult female, x 29. 

 Fig. 2, fifth pair of legs, male. Fig. 3, fifth pair of legs, female. Fig. 4, first 

 antenna of male, showing cesthetasks. 



Plate v., Boeckella psetidochela, J. Searle, n. sp. — Fig. i, adult female, x 23. 

 Fig. 2, side view of last thoi^acic segment and abdomen, with spermatophore 

 attached near genital aperture. Fig. 3, mandible and palp, male. Fig. 4, 

 .second maxilliped, male. Fig. 5, maxilla, male. Fig. 6, last thoracic leg, 

 female. Fig. 7, first antenna of male. Fig. 8, fifth pair of legs, male. Fig. 9, 

 detail of end of claw. 



