The Amphipoda of Bcrunida. 73 



Lower lip and first and second maxillae as in H. pontica. Maxilli- 

 peds with inner plates well developed, narrow, extending as far as 

 first joint of palp, provided with plumose spines on inner margin 

 and apex which also bears 3 odontoid spines ; outer plate extending 

 well beyond inner and bearing 2 plumose spines apically and m;iny 

 setae on inner margin; palp well developed with second joint sub- 

 rectangular and bearing a semicircular lobe on inner distal angle 

 and with many setae on inner margin ; third joint about as long as 

 first, broader distally than proximally and bearing many setae on 

 distal margin; fourth joint more or less clawlike, not as long as 

 preceding joint. 



In male first gnathopods with epimeron longer than high, rounded 

 ventrally but with anterior angle projectmg well forward ; second 

 joint moderately stout, projecting well beyond epimeron, bearing 

 on anterior margin 2 or 3 short setae and several long setae on 

 distal posterior angle ; third joint about as long as broad with a 

 few setae on distal posterior angle ; fourth joint about twice as 

 long as wide with a few setae on posterior distal angle ; fifth joint 

 articulating with fourth along nearly entire anterior margin, more or 

 less triangular with prominent semicircular lobe bearing long setae 

 on posterior margin, anterior margin moderately convex ; hand sub- 

 rectangular, rather more than twice as long as broad, not as broad 

 as wrist, posterior margin bearing single fascicle of setae near middle, 

 palm transverse and furnished with setae, the longest of which are 

 at the prehensile angle ; finger fairly stout, of usual form. 



Second gnathopods with epimeron slightly shorter than that of 

 first gnathopods with ventral margin evenly rounded ; second joint 

 robust but slender at proximal end, bearing a few setae on anterior 

 and posterior margins ; third joint as long as broad, with a few setae 

 on distal posterior angle ; fourth joint triangular, articulating with 

 wrist by distal portion of anterior margin, bearing several setae on 

 apex ; wrist rather short, bearing long curved process on posterior 

 side which renders wrist broader than hand which bears a fascicle 

 of setae apically ; hand oval, rather broader distally than proximally, 

 about twice as long as broad, palm somewhat oblique, straight, 

 provided with numerous setae of various lengths and prehensile 

 spine, posterior margin with fascicle of setae near middle ; finger 

 of usual form and size ; second gnathopods in every way stronger 

 than first. 



In female, first gnathopods with wrist longer than in male and 

 provided with many more setae on posterior margin ; hand shorter 

 than in male and furnished with many setae on posterior margin, 



