43 



343 



Carapace about -'/i as long as broad, poslero-lateral 

 borders slightly convergent posteriorly. Regions fairly well 

 marked, cervical suture deep, cardiac region swollen. Surface 

 obscurely granulate, especially toward the lateral margins. 

 Carapace and legs covered with a very short pubescence, 

 with marginal fringes of hair. Antero-lateral margin granu- 

 late and acute as far as the widest portion of the carapace 

 and marked by two obscure notches. 



Fronto-orbital distance over '/:; width of carapace, front 

 */4 width of carapace, grooved in the middle line, faintly 

 bilobed. Orbits piriform; eyes small, black. 



Buccal cavern increasing in breadth from behind 

 forwards; merus of maxillipeds with antero-lateral angle 

 produced and rounded; exognath of moderate width. 



Chelipeds heavy, especially the chelæ, and nearly Fig. 21 . lihizopa giacilipes, 

 smooth, except for marginal hairs. Arm projecting little Koh Chang, c?, y-7 mm. wide: 

 beyond the carapace, with a subterminal tooth above. 

 Wrist granulous at the inner angle, armed with a sharp 

 tooth. Chelæ smooth and shining, with a granulate marginal line above and below; 

 laiger palm as high as its superior length, and with a prominent tooth on the outer 

 side projecting over the dactylus, which has a basal tooth larger than the others. 



Third pair of legs over 2'/3 x length of carapace. 



Dimensions. — c?, length 7 mm., width 97 mm. 



The merus of the outer maxillipeds is much more produced at the anlero- 

 external angle than in Typhlocarcinus Stimpson. 



Typhlocarcinus villosus Stimpson. 



Typhlocarcinus villosus Alcock, LXIX, 322, 1900. 



20 miles ESE. of Koh Samit, 13 — 14fath., sandy mud, shells; 



II. 2; 2 ?. 15 miles E. of Koh Chuen, 10 fath., shell bottom; II. 



Fig. 28. Maxiliiped 2; 2 ? (1 ovig.). Gulf of Rayong, 7-10 fath., sand, mud, shells; 



oi^JslTliohChuZ, 11. 8: 1 c? 1 ?• 2 miles S. of Koh Tulu, 10 fath., sandy mud, shells; 



9,8-9mm. wide. ' II. 9 , 2 c? 5 ?. N. of Koh Kul, 10 fath.; I. 23; 1 d*. 



a, abdomen ; b, chela ; 

 c, ma.villiped. 



Typhlocarcinus nudus Stimpson. 



Plate I, fig. Ü. 

 Typhlocarcinus nudus Alcock, LXIX, 322, 1900. 



Singapore, 2—3 fath.; XII. 4; Id* 2?. Between Koh Kahdat 

 and Koh Kut, 6 fath., sandy clay; I. 9; Sc? 1 ?. S. of Koh Bidang, 

 9 fath., mud, shells; I. 18; 1 J" 1 ?. W. of Koh Kong, 10-15 fath.; 

 I. 24; 1 c? 1 ?. 12 miles E. of Koh Mak, 20 fath. (large seine); I. 28; 

 1 d*. 7 miles NW. to W. from Koh si Chang, 10 fath., mud; 11.24; 

 I?. N. of Koh Kut, 10 fath.; I. 23; 1 juv. 



Fig. 29. Maxiliiped 



of Typhlocarcinus 



nudus, Singapore, 9> 



65 mm. wide. 



44* 



