414 PROCEEDINGS OF THE ACADEMY OF [Juiie, 



the internal area a gradual transition into larger, rounded, rough papillae 

 takes place, especially over the area of attachment where this kind 

 occiu's nearly exclusively; but elsewhere they are interspersed with 

 papilla3 of the same type as, but larger than, those of the external 

 area. The large papillce are of a globular or haycock form and reach 

 a diameter of 10 or even 20 times that of the spines. Their surface 

 markings are very peculiar and characteristic, somewhat resembling 

 the chasing of a cane or umbrella head, but rougher than such work is 

 customarily. >Sometimes the markings are very regularly arranged in 

 rows converging to the apex, and may then be simply roughened ridges 

 and grooves, or rows of overlapping scales or even spines. The first 

 and last elytra are the roughest of all and have the largest papillae. 

 A strong fringe of long cilia marks the posterior external margin of 

 typical scales and nearly encircles (except for a small part of the inter- 

 nal margin) the first. The longest have a length of about ^ or | of 

 the greatest transverse diameter of the scales, but become much shorter 

 on approaching the mesial side, along the wdiole exposed })ortion of 

 which they are continued as integumental sense-organs of gradually 

 diminishing length. 



The notopodial setae form a large spreading tuft, but their tii:)S 

 scarcely reach beyond the end of the neuropodium ; they are pale hay 

 color, capillary, bipinnate, with the lateral processes alternating. 

 Owing to a constant coating of foreign substances few details can ])e 

 made out. Neuropodial sette arranged in 3 supraacicular and 5 sub- 

 acicular horizontal row«, amber-colored, relatively slender, with the 

 smooth tips unusually long, and except on the most dorsal, exceeding 

 the spinous portion in length ; 4 transverse rows of spines on the ven- 

 tralmost setae, 9 on the dorsalmost. 



Some color is retained in the elytra, which are yellow or l^rown, some- 

 times with an irregular greenish blotch surrounding a pale area opposite 

 the point of attachment, the larger papillae usually dark brown. The 

 dorsal cirri and all cephalic appendages, with the exception of the palpi, 

 have a broad zone of dark green pigment above the base, and a deeper 

 but narrower one just proximad of the subterminal enlargement. 



LcpkJonotus caiorus somewhat resembles L. pleiolepis von Marenzel- 

 ler, but differs especially in the numerous spheroidal papillae on the 

 elytra and the more slender form and longer smooth tips of the neiu'o- 

 poclial setae. 



Sagami Bay, 3,698, 153 fms., type and 8 other specimens; Suruga 

 Bay, 3,707, 63-75 fms. 



