306 6 



Tlos muriger Adams and White. 

 Tlos muliger Adams and Whitk, Zool. Samarang, Crust., 58, pi. XIII, fig. 2, 1848. 



N. of Koli Kut, 10 fath.; I. 23; 1 c?. Koli Cliuen, 30 fath., sliell bottom; II; 

 1 Ç juv. 6 miles East of Cap Liant, 9 fath., shell bottom; II. 1; 1?. 



Nursia lar (Fabricius). 



Parthenope lar Faiiricius, Entora. Syst., Suppl., 354, 1798. 

 Niir.iia hardwickii Leach, Alcock, LXV, 181, 1896. 



Singapore, 2—3 fath.; XII. 4; IJ" 1 ?. Between Koh Kut and Koh Kahdat, 

 10 fath., shell bottom; I. 10; 2 c? 3 ?. North of Koh Kul, 10 fath.; I. 23; 1 ?. 

 North of Koh Chuen, 15 fath., mud, shells; II. 5; 1 Ç juv. The Gulf at Rayong, 

 7—10 fath., sand, mud, shells; II. 8; 1 d" 1 ?. North of Koh Kut, 15 fath.; III. 4; 

 1 Ç ovigerous. Koh Lan, 30 fath., mud; III. 2; 1 Ç juv. Between Koh Chuen and 

 Koh Chang, 15 fath., mud; III. 3; 1 Ç immature. 



The species "Parthenope Lar Fabricius" has remained till now neglected, its 

 author having classified it according to its general appearance without reference to 

 the mouth parts. The original description is as follows: — 



"P. thorace inaequali quadridentafo: margine spinoso, chelis laeuibus. 



"Habitat in India Dom. Daldorff. 



"Corpus paruum obouatum. Rostrum truncatum, vix exsertum. Thorax in- 

 aequalis dentibus duobus in medio duobusque in linea dorsali postice eleuatis, 

 acutis. Spinae marginalis utrinquetris planae, acutae : intermedia longiore. Chelae 

 longlssimae at omnino laeues." 



The type specimen is in the Museum at Copenhagen. 



Milne Edwards had doubts as to the assignment of the species, for he 

 says: — ' 



"Si le Lambre lar. {Parthenope lar. Fabr. Supp. p. 354) appartient réellement 

 à la tribu des Parthénopiens, il paraît devoir se ranger parmi les Lambres, et il 

 se distinguerait facilement de toutes les autres espèces par ses pinces qui sont 

 tout-à-fait lisses." 



Heteronucia mesanensis Rathbun. 



Heteronucia mesanensis Rathbun, Proc. Biol. Soc. Washington, XXII, 107, 1909. 



As in the typical species of the genus, H. vesiculosa Alcock (LXV, 177, pi. 

 VIII, fig. 1), the surface is closely set with vesiculous granules. The carapace is 

 one-fourth broader than long, subglobular, very uneven; a narrow triangular area 

 in the middle is bordered by a deep groove and embraces the cardiac and meso- 

 gastric regions, the cardiac region being also separately convex; branchial region 

 nodulous and tuberculous, the larger protuberances in the anterior half; an incon- 

 spicuous tubercle on the hepatic region. The lateral margin begins with a tubercle 

 at the angle of the buccal cavity, on the pterygostomian region there is a large 



» Hist. Nat. Crust., I, 358, 1834. 



