TlIK MYlJIAI'nnA IN I'lIK Al'STKAMAN MUSKIM l!K('»l,KMAN\. 1()7 



II (15) — Dimples of the scobinas twice as wide as loiio', 

 nnnided at its ends, the botttnn beiiif»- raised and eon- 

 vex ; posterior /one without distinct stria> 



Diin'iiiittiirrlcHx fdnriiini, sp. nov. 



15 (1-1-) — Dimple of the scobina nearly tive times as wide as 



long, with acute ends and concave bottom ; the pos- 

 terior zone distinctly striate 



If'nn-iiiatiicriciit nuiKliii il !■•<, sp. nov. 



16 (18) — Distance between the dimples at least three times 



the diameter of one of them 17. 



17 (-0) — Distal y)roeess of the ventral plate of anterioi- orono- 



pods as long as, or longer than the proximal part. 

 Integuments without silky lustre 18. 



IS (19) — Legs chestnut. Posterior part of prozonite witli a 

 transverse dorsal sulcus. Valves not j)articularly 

 prominent, and but slightly compressed. Distal pi'o- 

 cess of ventral plate of anterior gonopods slightly 

 narrowed at the base, j-ather linguiform. Four anten- 

 nal sensory cones Ditirhiaforrli-iis (h'sjtiiirhis, sp. nov. 



19 (18) — Legs dark. Posterior part of prozonite without 



transverse dorsal sulcus. Valves with a distinct pre- 

 marginal impression, very prominent, with upper angles 

 unusually thickened. Distal j)rocess of vejitral plate of 

 anterior gonopods gi'adually narrowed from, the base to 



the apex. Fifteen antenna] sensory cones 



I>iiiPi)iiifnrri('i(>i njnth's, sp. nov. 



20 (17) — Distal processes of the ventral plates of anterioi- gono- 



pods half as long as the j)roximal part. integuments 

 densely beset with minute strife, showing a silky lusti'e 



J h'lit'iiiiifofrir/is liolosi'riri'iiK, s[). nov 



(jfuii^i Acaiithiulus, terrain, 1844. 



(? Syn. : J'nl i/I,iitioloJtHt<, Pocock, Ann. Mag. Nat. Hist. 

 (7), xii., 1893). 



Anterior gonopod somewhat as in 'J'riyiiin'iiliis. The 

 proximal part of the ventral plate (PI. xv., r. fig, 23) extends 

 latei'ally around the base of the organ ; it is fused with its 



