1914-] S. Kemp: Notes on Crustacea Decapoda. 93 



Genus Spirontocaris, Bate. 



18O0. Hippolyte, Stimpson, Proc. Acad. Nat.Sci. Philadelphia, pp. 33-35. 

 igo6. Spirontocaris, Caiman, Ann. Ma<^. Nat. Hist. \-j), XVII, p. "32 

 {iibi cef. svii.) 



Spirontocaris pandaloides (Stimpson). 



i860. Hippolyte pandaloides, Stimpson, Proc. Acad. Sci. Philadelphia, 



. P- 34- 

 1902. Hippolyte pandaloides, Doflein, Abhandl. bayerisch. Akad. Wiss., 



XXI, p. 637. 

 1907. SpU'otifocaris pandaloides, de Man, Trans. Linn. Soc., Zool. (2), 



IX, p. 418, pi. xx.xii, figs. 47, 48. 



The Indian specimens differ from the long description given 

 by de Man onh' in respect of the length of the sixth abdominal 

 somite which, in all the larger examples, is little, if at all, more 

 than two- thirds the length of the preceding somite. 



On comparison with examples collected at Yokohama by 

 Dr. Haberer and received in exchange from the Munich Museum 

 the only difference that I can find is that in the Japanese speci- 

 mens the distal end of the third abdominal somite is rather more 

 strongly produced : in the proportions of the last two abdominal 

 somites there is close agreement. 



The rostrum in the Indian specimens bears 8 to 12 (usually 9) 

 teeth on the upper margin and 8 to 12 on the lower. The two 

 posterior teeth of the dorsal series are always situated on the 

 carapace behind the orbit. 



^-^^'' Karachi, mouth of Karachi Museum. Nine, ^3-S^ mm. 



R. Indus. 

 ^§1 Yokohama, Japan. Munich Mus. cxch. Three, ca. 42-50 mm. 



spirontocaris pandaloides has hitherto been recorded only 

 from Japan ; from Hakodadi (Stimpson), Yokohama (Doflein) and 

 the Inland Sea (de Man). 



Genus Thor, Kingsley. 



1878. Thor, Kingsley, Proc. Acad. Sci. Philadelphia, XXX, pp. 6, 94. 



1899. Thor, Kingsley, American Naturalist, XXXI, pp. 714, 718. 



igoi. Tlior, Rathbun, Bull. U. 3. Fish Comm. for luoo, II, p. 116. 



1905. Paschocaris, Nobili, Bull. Mus. d'Hist. nat., Paris, p. 304. 



igo6. Paschocaris, Nobili, Ann. Sci. nat. Zool., Paris (91, W , p. 37. 



The genus Thor is very closely related to Hippolyte, but 

 differs from H. varians, the type species of the latter genus, in 

 the greater number of segments in the carpus of the second 

 peraeopods and in the absence of supra -orbital and pterygosto- 

 mian spines from the carapace. It is also distinguished by the 

 presence of a curious movable triangular plate situated dorsallj'' 

 at the end of the ultimate segment of the antennular pe- 

 duncle. 



