212 



Colour yellowish, mottled with numerous light brownish pigmentary spots. 

 Length of adult female scarcely exceeding 4 mm. 



Remarks. The present form, the type of the genus, certainly bears 

 some resemblance to Amlania nonllandica in its general appearance, but may, 

 on closer examination, be readily recognized by its still more compact body, 

 and by the rather different structure of the last pair of pereiopoda. 



Occurrence. I first detected this form in the Varan gerfjord, at 

 Vadse, and have subsequently also found it in a few other places off the 

 west coast of Norway, as also in the Trondhjemsfjord. It occurs, as a rule, 

 in moderate depths, from 20 to 60 fathoms, where the bottom is stony and 

 overgrown with Hydroida and Polyzoa. It has also been found semipara- 

 sitic in the branchial cavity of Ascidse (Molgula). 



Greenland (Hansen); Spitsbergen (Aurivillius). 



Fam. 7. Amphilochidae. 



Body, as a rule, rather short and stout, sometimes exhibiting a remote 

 resemblance to that of the Stegocepliolidce. Sexual difference, as in the latter, 

 very slight. Cephalon of moderate size, more or less produced in front. 

 Coxal plates generally rather large, 4th pair the largest, and angularly 

 produced posteriorly. Metasome and urosome well-developed. Antennae 

 comparatively short, subequal in length, or the inferior ones a little longer, 

 accessory appendage generally wanting, or very small. Anterior lip more 

 or less distinctly lamellar, and incised at the tip ; posterior lip with the inner 

 lobes very small, or quite wanting. Mandibles of normal appearance, molar 

 expansion more or less developed, palp distinct and 3-articulate. Maxillae 

 comparatively small, and of the usual structure. Maxillipeds with the masti- 

 catory lobe more or less expanded, palp generally rather elongated, with the 

 terminal joint unguiform. Gnathopoda of different structure in the different 

 genera, either simple, or distinctly subcheliform, the posterior ones generally 

 the larger. Pereiopoda normal and, as a rule, very slender. Branchial 

 lamellae simple; incubatory lamellae large and edged with long setae. Uropoda 

 rather unequal in size, the penultimate pair being much shorter than the 

 others, last pair more or less differing in stucture from the 2 preceding pairs. 

 Telson unarmed, entire or cleft. 



