Podophthalmia and Entomostraca. 279 



my friend and brother carcinologist, in remembrance of the 

 happy hours which we have spent together, and as a tribute to 

 an excellent field naturalist. 



Subfam. II. Pandalin^e (Dana). 



Genus Pandalus, Leach. 



[Pandalus Thompsoni, Bell. PI. XIV. figs. 3-9. 



Hippolyte Thompsoni, Bell, Brit. Crust, p. 290 ; White, Popular Hist. Brit. 

 Crust, p. 123. 



Pandalus Jeffrey sit, Spence Bate, Fauna of Swansea ; and Nat. Hist. Re- 

 view, vol. vi. p. 100, with woodcuts. 



Bell has described a Hippolyte, but figured a Pandalus, for this 

 species. Any one looking at the woodcut in the ' History of 

 British Crustacea ' will see that the first feet are rightly drawn 

 with "the terminal joint styliform and simple/' which is the 

 chief character of the genus Pandalus. Hippolyte Thompsoni is 

 thus undoubtedly synonymous with Mr. Spence Bate's Pandalus 

 Jeffreysii. Mr. Gosse was near discovering the truth. In his 

 " Notes on some new and little-known Marine Animals " (Ann. 

 Nat. Hist. ser. 2. vol. xii. p. 155), he remarked that the rostral 

 spines of Hippolyte Thompsoni are not simple serratures, but 

 " triangular spines articulated to the edge," as in Pandalus an- 

 nulicornis ; but there his observations appear to have ceased, and 

 he failed to notice that the shrimp which he was examining was 

 in all respects a true Pandalus. 



Subfam. III. Pal^emoninj: (Dana). 



Genus Palcemon, Fabr. 



Palcemon minans, n. sp. PI. XIV. figs. 1 & 2. 



Scutum dorsale vix carinatum. Rostrum haud longe ab origine 

 subito resimum ; squamam antennarum non superans. Dens unus 

 in scuti tergo positus. Rostri denies, marginis superioris nulli, 

 inferioris tres, ciliati. 



This Palcemon may be known at a glance from the other 

 British species by the remarkable form of the rostrum, which, 

 instead of being horizontal or nearly so, is suddenly bent up- 

 wards at a short distance from its base. There is a single tooth 

 on the back of the carapace, but none on the upper margin of 

 the rostrum. The under side of the rostrum is furnished with 

 three large teeth, which are fringed with fine hairs. 



Palcemon minans was taken at Guernsey in 1857. The specific 

 name has reference to the " threatening " aspect of the rostrum 

 — upraised, as it were, to strike. 



