38 



p.a. Mclaughlin and p.f. clark 



Telson with small median cleft, terminal margins of both lobes with 

 long spines interspersed with slightly smaller spines, extending 

 down lateral margin of left only. 



Colour. Not known. 



Distribution. Known with certainty only from the Torres Strait, 

 Arafura Sea; ? Persian Gulf, Gulf of Aden, India, Sri Lanka, 

 Indonesia, and Northern Australia. 



REMARKS. Henderson's (1893) very brief diagnosis of D. 

 rectimanus could refer to several species. The fact that he noted that 

 the lower margin of the left chela and fixed finger was straight, and 

 the fingers very short suggests that he may not have been dealing 

 with Miers' (1884) species. Alcock (1905) stated in his diagnosis 

 that the merus of the left cheliped was not spinose. The merus of the 

 left cheliped of the holotype ofD. rectimanus has a spinulose dorsal 

 margin; both the ventromesial and ventrolateral margins are spinose. 

 However, Alcock's (1905, pi. 6, fig. 8, pi. 7, fig. 2) figures show a 

 very strongly armed merus, and in other respects do bear consider- 

 able similarity to the holotype of D. rectimanus. None of the other 

 citations of this species are sufficiently detailed to ascertain whether 

 or not the authors were actually dealing with Miers' (1884) taxon. 

 However, as pointed out by Rahayu and Forest (1995), Haig and 

 Ball's (1988) notation on the reduced armature of the lower margin 

 of the palm of the left cheliped, does suggest that they may not have 

 been, despite the close proximity of their specimen to the type 

 locality. 



Diogenes goniochirus Forest, 1956 



(Figs 3a, 8a, 9a, 11a) 



2 mm 



1mm 



Fig. 4 Shield and cephalic appendages, Diogenes planimanus 

 Henderson, 1893, 9 SL = 4.85 mm, UMZC Nov. 30, 1899. 



Fig. 5 Anterior portion of shield and cephalic appendages, Diogenes 

 platvoeti nom. nov.. holotype cf SL = 4.81 mm ZMA De201.872. 



Diogenes rectimanus: Lanchester, 1902:366 (in part) [Non Diogenes 



rectimanus Miers, 1884]. 

 Diogenes goniochirus Forest, 1956:527, figs 5-7; Rahayu and For- 

 est, 1995:395. 



Material examined. Type material. Paralectotyped"(SL = 2.78 

 mm), ovigerous 9 (SL = 3.05 mm), Long Hai, Cochinchine, Viet- 

 nam, Modest, 1905; BMNH 1995.1663-64. 



Lanchester material examined. 1 9 (SL = 2.15 mm), 'Loc. 



?', 'Skeat' Expedition, Malay Peninsula; UMZC, Nov. 30, 1899. 



Diagnosis. Shield (Fig. 3a) as broad or slightly broader than long; 

 anterior margin with only few spinules between broadly rounded 

 rostrum and slightly produced lateral projections; dorsal surface 

 with few transverse, setose and/or spinulose ridges laterally. Dorsal 

 margin of branchiostegite with row of closely-spaced small spines 

 over entire length. Ocular peduncles 0.75-0.80 length of shield; 

 corneae dilated little if at all. Ocular acicles broadly sub-triangular; 

 terminal margins with 3 or 4 spines, extending approximately half 

 length of margins. Intercalary rostriform process subovate, acute, 

 not reaching to tips of acicular spines, no ventral spine. Antennular 

 and antennal peduncles approximately equal in length, both over- 

 reaching ocular peduncles. Antennal acicles not forked, with simple 

 terminal spine, lateral margin with 1 spine distally, mesial margin 

 with row of 4-6 spines. Antennal flagella with long ventral setae. 



Left cheliped (Fig. 1 la) with ventral and lateral faces of merus 

 spinulose, ventromesial distal margin with row of very small spines; 

 outer face of carpus spinulose, with longitudinal row of small spines 

 centrally, culminating in strong spinose protuberance distally, upper 

 margin with row of spines; lower surface and margin of palm and 

 fixed finger straight or convex, armed with 3 to several rows of blunt 

 or spinulose tubercles, outer surface of palm spinulose but without 

 median crest, row of small spines on upper margin of palm, some- 

 times more prominent distally, double row of spines on dactyl. Right 



