isoroDS 



225 



that the general hairiness of the Academy specimen is about the same 

 as that of your specimen makes me suspicious that the tuft referred to 

 has been removed. The antennae and antennulcs differ in no essential 

 respect, so far as I can see. The chelipeds of the type specimen I am, 

 unfortunately, unable to find." 



Description. — Body narrow, elongate, gradually widening somewhat 

 from the anterior to the posterior extremity. 



Head but little narrower than the first thoracic segment and about twice 

 as wide as long ; frontal margin slightly excavate and without median 



process between the antennae ; 

 lateral margins straight, with 

 a small lobe on either side near 

 the base of the head. Eyes 

 lateral, situated in the median 

 transverse line. First pair of 

 antennae reach the extremity of 

 the peduncle of the second 

 pair of antennae ; flagellum con- 

 tains about ten joints. Second 

 pair of antennae are about two thirds 

 the length of the body ; the flagellum 

 consists of about 55 joints. 



The first segment of the thorax has 

 the epimeral lobes distinct and visible 

 from a dorsal view at the antero-lateral 

 angles of the segment. In the second 

 and third segments the epimera are bi- 

 lobed and occupy the 

 anterior portion of the 

 lateral margins. In the 

 fourth segment the epi- 

 meron is a small lobe sit- 

 uated at the antero-lateral 

 extremity of the segment. 

 In the fifth and sixth seg- 

 ments the epimeron is a 

 small lobe about the mid- 

 dle of the lateral margin. 

 ^'''- "Harfo'rdtx S""^"""" In the seventh segment Harford, 

 it has more of a posterior position on the lateral margin. 



The abdomen is broad, with the sides nearly parallel. Posteriorly it is 



Fig. III. Mandible 

 of A sellus iomaUnsis 



