NO. 1236. NEW HERMIT CRABS— BENEDICT. 773 



The outer margins of the pahiis are not divided into lobes, but the 

 granules are arranged in more or less regular transverse rows; the 

 margin is not abrupt; the upper surface rounds gradually into the 

 side; against this rounded portion the first pair of ambulatory legs fit 

 and rest firmly; the movalde finger is short and stout; the surface is 

 crowded with granules; it is evenly rounded with the exception of a 

 slight depression near the articulation, 



A channel on the facets of the aml)ulatory legs begins at the proxi- 

 mal margin of the carpus and ends on the dactyl a little beyond the 

 middle; the inner margin of the palm is divided into lobes, each of 

 which has a double row of granules, except the terminal one, which 

 has four or more. The outer margin is deeply cut into lobes, which 

 are well separated at the base and are in contact at near the thin edge; 

 these foliaceous lobes appear as if built up of granules. The abdomen 

 is spherical; the plate of the sixth segment is divided by a transverse 

 carina; the anterior portion is subdivided by a median notch and a deep 

 groove which widens out into a large pit at the carina; the margin is 

 spiny. The arrangement of spines is as follows: A group of four on 

 one side of the notch and six on the other; a single large spine is 

 placed near the carina; between this spine and the groups at the notch 

 are two spines which arise from a single base; the posterior part of 

 the plate begins with a deep groove, which reaches from side to side 

 next the carina; the posterior margin is truncate, with a notch near 

 the angles; two or three small tubercles are placed near the notches; 

 the angles and sides are ornamented with a number of similar tuber- 

 cles. The telson is truncate and has a large lobe on the side. 



A single female 25 mm. in length, without eggs, station 2405, Gulf 

 of Mexico, 28- 45' 00" north latitude, 85^ 02' 00" west longitude, in 30 

 fathoms. Unfortunatelj^ the specimen is without its dwelling. 



T^pe.—V.S.^M. No. 9784. 



Cancellus ornatus seems to be more close l}'^ related to Cancellus 

 tanneri than to any other described species; from this it may be readily 

 separated by its triangular rostral projection and man}^ other char- 

 acters examined in detail. The enlarged coxal segments of the fifth 

 pair of feet are closely like those of C. tanneri,' this character sepa- 

 rates it from C \ typtis Edwards. 



CANCELLUS SPONGICOLA, new species. 



The angle of the rostral projection in this species is closely like that 

 of Cancellus ornatus, with the exception that the apex is a little more 

 acute. The sinus behind the eyes is not bordered by a collar-like 

 carina, and the margin and the antero-lateral angle is rounded. The 

 eyes, as in CaiiccUus ornatux, reach the plane of the operculating facets. 

 The autennular peduncles pass the eyes a very little. The peduncles 



